02.1 · The accounting equation & double entry¶

Why this matters: Every number in every annual report you will ever read comes from one identity, assets = liabilities + equity, applied to millions of transactions. If you can push any business event through that identity, you can read financial statements as a record of what actually happened, work out what management must have done to produce a number, and notice when a number has no plausible "other side".

Learning objectives — after this lesson you can:

Explain why financial accounting exists, who relies on it, and why its numbers have legal consequences (dividends, tax, loan covenants), not just analytical ones.
Define asset, liability and equity precisely and classify any balance-sheet item, including the awkward ones (customer advances, guarantees, disputed tax demands).
Post any transaction to the accounting equation, write it as a debit/credit journal entry and trace it through T-accounts to a trial balance.
Build an income statement, a balance sheet and a cash summary from a list of raw transactions, and explain exactly why profit and cash differ.
Explain retained earnings as the bridge between the income statement and the balance sheet, and reconcile Kaveri Pumps' reserves from FY24 to FY26 to the rupee.

Prerequisites: 01.1 What a company is, 01.2 Shares, market cap & enterprise value · Time: ~100 min

1. Why accounting exists¶

A company is a separate legal person (01.1). The people who own it (shareholders) are usually not the people who run it (management). Plenty of others also have a claim on it or an interest in it: lenders, suppliers, employees, the tax department, regulators. None of them can walk into the factory and count everything. They need a standardised, periodic, audited report of what the company owns, what it owes and how it performed. That report is financial accounting.

It helps to separate three kinds of accounting that share a vocabulary but have different jobs:

Kind	Audience	Rules	What it is for
Financial accounting	Outsiders: shareholders, lenders, regulators	Ind AS / IFRS / US GAAP, company law, audit	Comparable reports on position and performance
Management accounting	Insiders	None; whatever helps decisions	Budgets, product costing, plant-level margins
Tax accounting	Income-tax department	Tax law	Computing taxable income; it differs from book profit, which is why "deferred tax" exists (02.3)

This course is almost entirely about financial accounting. It does three jobs, and an analyst should keep all three in mind:

Stewardship. Did management look after the owners' money? The annual report is, legally, the board reporting to shareholders.
Contracting. Accounting numbers are written into law and contracts. In India a company may pay dividends only out of the profits of the year (after depreciation) or out of undistributed profits of earlier years (Companies Act, 2013, s.123). Loan agreements carry covenants such as "net debt / EBITDA below 3.0x". Management bonuses are tied to profit targets. Tax is computed starting from book profit. So a profit number has consequences, and whatever has consequences attracts people who want to shape it. Forensic accounting (Module 09) starts from that point.
Decision-usefulness. Investors use the statements to estimate future cash flows. That is our job, and the statements were not designed mainly for it, which is why analysts spend so much time re-arranging them.

A useful mental model for an engineer: accounting is a lossy compression algorithm. Millions of invoices, payments, shipments and estimates are compressed into three statements of perhaps 60 lines each. The compression follows published rules, so you can partly decompress it. The notes to accounts are the side-channel where some of the lost information is kept (03.3).

The method is old. The double-entry system described in this lesson was used by Italian merchants in the Renaissance, and the first widely circulated printed description of it appeared in Luca Pacioli's Summa de arithmetica, published in Venice in 1494 (Wikipedia summary). The mechanics have barely changed since. What has changed enormously is the set of judgements layered on top: when to recognise revenue, how to value assets, what to estimate. Later lessons in this module cover those.

It also helps to be clear about what accounting is not: it is not valuation. Kaveri Pumps' book equity at 31-Mar-2026 was ₹706.1 Cr. At ₹390 a share its market capitalisation is ≈ ₹2,340 Cr (6.00 Cr shares × ₹390), so the market pays about 3.3x book (₹390 ÷ book value per share ₹117.7). The gap is the market's view of things accounting mostly does not record: the dealer network, the brand, the engineering know-how, and above all the expected future profits. 02.4 looks at what is and is not on the balance sheet.

2. The accounting equation¶

Three definitions, paraphrased from the conceptual framework that underlies Ind AS and IFRS (IFRS Foundation, Conceptual Framework):

An asset is a present economic resource controlled by the company as a result of past events. An economic resource is a right that can produce economic benefits: cash, a machine, a receivable, inventory, a right to use a leased building.
A liability is a present obligation to transfer an economic resource, arising from past events: a bank loan, an unpaid supplier invoice, tax owed, or pumps a dealer has paid for but not yet received.
Equity is the residual interest in the assets after deducting all liabilities. It is whatever is left for the owners.

The last definition is the accounting equation, written the other way round:

\[\text{Assets} = \text{Liabilities} + \text{Equity} \qquad\Longleftrightarrow\qquad \text{Equity} = \text{Assets} - \text{Liabilities}\]

In words: everything the company controls was financed either by someone it owes (liabilities) or by its owners (equity). The left side lists what the resources are; the right side lists who has a claim on them. Equity is defined by subtraction. It is not a pile of cash, and a company with large equity can be short of cash (you will see this in the worked example).

Three words in those definitions matter a lot in practice:

Controlled, not owned. A factory leased for ten years is not owned, but the right to use it is controlled, so under Ind AS 116 it appears as a right-of-use asset with a matching lease liability (Kaveri shows ₹16.5 Cr and ₹18.2 Cr at FY26; details in 02.7).
Past event. A signed purchase order from a customer is not yet an asset. Once the pumps are delivered, the right to be paid is (a trade receivable).
Obligation, not debt. A dealer's cash advance for pumps not yet shipped is a liability even though Kaveri owes no money. It owes pumps. If it fails to deliver, it must refund.

Kaveri Pumps FY26 in equation form¶

Here is Kaveri's consolidated balance sheet at 31-Mar-2026 (reference data), arranged as the equation:

Assets (₹ Cr)	FY26	Liabilities & equity (₹ Cr)	FY26
Net block (PP&E)	495.3	Borrowings – non-current	92.0
Capital work-in-progress	2.0	Borrowings – current	96.0
Right-of-use assets	16.5	Lease liabilities	18.2
Intangible assets	8.0	Trade payables	143.4
Inventories	188.1	Other current liabilities & provisions	65.9
Trade receivables	346.7	Deferred tax liability (net)	22.0
Other current assets	39.5	Total liabilities	437.5
Current investments	15.0	Equity share capital	30.0
Cash & cash equivalents	32.5	Other equity	676.1
		Total equity	706.1
Total assets	1,143.6	Total liabilities + equity	1,143.6

₹437.5 Cr + ₹706.1 Cr = ₹1,143.6 Cr. Liabilities fund 38.3% of the assets and equity 61.7%. The two sides must be equal, and not because anyone checks and adjusts them: the way transactions are recorded (Section 3) makes it impossible for them to differ. If a spreadsheet model of Kaveri does not balance, the model has a bug; the company does not have a "gap". 02.6 is about hunting those bugs.

Classifying the awkward items¶

Most items are obvious. The ones below come up again and again in Indian annual reports, and misclassifying them causes real analytical errors:

Item	Asset, liability, equity, or none?	Why
Pumps finished and sitting in the warehouse	Asset (inventory)	Controlled resource, expected to be sold
Money owed by a state nodal agency for solar pumps delivered	Asset (trade receivable)	Right to cash from a past delivery. Whether it will actually be collected is a separate question (impairment, 02.4)
Cash advance received from a dealer for pumps not yet shipped	Liability (contract liability / advance from customers)	Obligation to deliver goods or refund
Advance paid to a copper supplier	Asset (advance to suppliers)	Right to receive copper
March wages, paid on 7 April	Liability (accrued expense)	Obligation from work already done
Rent paid in March for April–June	Asset (prepaid expense)	Right to use premises in future
Income tax on this year's profit, not yet paid	Liability (current tax liability)	Obligation from this year's profit
A new factory still under construction	Asset (capital work-in-progress, CWIP)	Controlled resource; depreciation starts once it is ready for use
Share capital subscribed by the promoters	Equity	Owners' contribution
Profits kept in the business over 30 years	Equity (retained earnings, inside "other equity")	Owners' residual claim
The "Kaveri" brand built over 30 years	None	Internally generated brands are not recognised as assets under Ind AS
Bank guarantees given to state agencies for tender performance (₹96.0 Cr at FY26)	None (disclosed only)	No present obligation to pay unless Kaveri defaults; shown in the notes as a commitment or contingency
GST demand of ₹38.0 Cr under appeal	None (contingent liability, disclosed)	Recognised only if an outflow becomes probable; otherwise disclosed (02.8)

The last three rows are the reason you cannot stop reading at the face of the balance sheet. Kaveri's ₹96.0 Cr of guarantees and ₹38.0 Cr GST dispute together are about 19% of its book equity, and neither appears in the equation.

The expanded equation¶

Equity changes for only two kinds of reason: transactions with owners (they put money in, or the company pays them dividends or buys back shares) and performance (the company earns income or incurs expenses). Splitting equity into its parts gives the expanded equation:

\[ \text{Assets} = \text{Liabilities} + \underbrace{\text{Share capital} + \text{Opening retained earnings} + \text{Revenue} - \text{Expenses} - \text{Dividends}}_{\text{Equity at the end of the period}} \]

(Ind AS adds other comprehensive income and some reserves to this; see 02.3 and 02.8.)

This gives the precise meaning of two words people use loosely:

Revenue/income is an increase in equity that does not come from the owners putting money in.
Expense is a decrease in equity that is not a payment to the owners.

So a dividend is not an expense (it is a distribution to owners), and money raised in an IPO is not income (it is a contribution from owners). Both change equity, but neither touches profit.

3. The nine ways a transaction can move the equation¶

Every transaction changes at least two things, and the changes always keep the equation balanced. There are only nine basic patterns. Learn them once and you can place any business event:

#	Effect	Example	Touches profit?
1	Asset ↑, Liability ↑	Borrow from a bank; buy raw material on credit	No
2	Asset ↑, Equity ↑	Issue shares for cash (no profit); make a sale (profit)	Only if it is a sale
3	Asset ↑, another Asset ↓	Buy a machine for cash; collect a receivable	No
4	Asset ↓, Liability ↓	Repay a loan; pay a supplier	No
5	Asset ↓, Equity ↓	Pay wages (expense); record depreciation (expense); pay a dividend (not an expense)	Only if it is an expense
6	Liability ↑, Equity ↓	Accrue unpaid salaries; provide for income tax	Yes (expense)
7	Liability ↓, Equity ↑	Deliver goods a customer paid for in advance (revenue); reverse an old provision	Yes (income)
8	Liability ↑, another Liability ↓	Refinance a loan; move a supplier's invoice to a bank's supplier-finance programme	No
9	Equity ↑, other Equity ↓	Bonus issue (reserves become share capital)	No

Two points to take from the table:

Four of the nine patterns never touch profit (1, 3, 4, 8), and two more (2, 5) touch it only sometimes. A large share of what a company does in a year (buying assets, borrowing, repaying, collecting, paying suppliers) has no effect on profit. This is why profit and cash differ so much, and why you need all three statements.
Pattern 8 looks harmless, but it is where some cash-flow games happen. A supplier invoice turned into a bank liability under a "supplier finance" arrangement leaves total liabilities unchanged but can move the payment out of operating cash flow. We return to this in 09.4.

4. Worked example 1: starting a pump workshop¶

Meena Subramaniam (fictional) leaves a large pump maker and on 1-Apr-2025 starts Meena Pump Works Pvt Ltd in Coimbatore. We follow her first financial year, FY26 (1-Apr-2025 to 31-Mar-2026), through ten transactions, aggregated for the year. Amounts are in ₹ lakh (1 lakh = 100,000).

The ten transactions

T1. Meena subscribes ₹20.0 lakh for shares in the new company.
T2. The company takes a ₹10.0 lakh term loan from a bank at 10% a year.
T3. It buys a lathe and test bench for ₹12.0 lakh in cash. Expected life 10 years, no residual value.
T4. It buys castings, copper wire and stampings worth ₹15.0 lakh on 60-day credit.
T5. A dealer in Erode pays a ₹3.0 lakh advance for pumps to be delivered in FY27.
T6. It sells pumps for ₹30.0 lakh. Customers pay ₹18.0 lakh during the year and owe ₹12.0 lakh at year-end. The materials used in the pumps sold cost ₹12.0 lakh.
T7. It pays wages of ₹6.0 lakh, power and rent of ₹3.0 lakh, and loan interest of ₹1.0 lakh, all in cash (₹10.0 lakh in total).
T8. It pays suppliers ₹11.0 lakh.
T9. At year-end it records depreciation: ₹12.0 lakh ÷ 10 years = ₹1.2 lakh.
T10. It provides for income tax at an assumed flat 25% of profit before tax. The tax is payable after year-end. (Actual Indian corporate tax rates are in 02.3.)

Each transaction's effect on the equation (₹ lakh; brackets are decreases):

#	Transaction	Cash	Receiv.	Inventory	PP&E	Borrow.	Payables	Cust. advance	Tax payable	Share cap.	Retained earnings	Total assets	Total L + E
T1	Owner invests	20.0								20.0		20.0	20.0
T2	Bank loan	10.0				10.0						30.0	30.0
T3	Machine for cash	(12.0)			12.0							30.0	30.0
T4	Materials on credit			15.0			15.0					45.0	45.0
T5	Dealer advance	3.0						3.0				48.0	48.0
T6a	Sale: revenue	18.0	12.0								30.0	78.0	78.0
T6b	Sale: materials consumed			(12.0)							(12.0)	66.0	66.0
T7	Wages, power, rent, interest	(10.0)									(10.0)	56.0	56.0
T8	Pay suppliers	(11.0)					(11.0)					45.0	45.0
T9	Depreciation				(1.2)						(1.2)	43.8	43.8
T10	Tax provision								1.7		(1.7)	43.8	43.8
	Closing, 31-Mar-2026	18.0	12.0	3.0	10.8	10.0	4.0	3.0	1.7	20.0	5.1	43.8	43.8

After every single row, total assets equal liabilities plus equity. Now look at what each transaction teaches:

T1 and T2 (patterns 2 and 1) bring in ₹30.0 lakh of cash from owners and lenders. Neither is income. Raising money does not make you richer; it gives you more resources and an equal claim against them.
T3 (pattern 3) is a swap: cash becomes a machine. Buying the machine is not an expense. The ₹12.0 lakh becomes an expense slowly, through depreciation, as the machine is used up (T9). This is called capitalising a cost. Whether a cost should be capitalised or expensed is one of the biggest judgement areas in accounting (02.7).
T4 (pattern 1) creates inventory and a matching obligation to the supplier. Nothing has been earned or spent yet in the profit sense.
T5 (pattern 1) brings in cash but no revenue. Meena owes the dealer pumps. The ₹3.0 lakh is a liability until the pumps are delivered next year, at which point it becomes revenue (pattern 7). 02.2 is devoted to this distinction.
T6 is the heart of the business, and a sale always has two legs. The revenue leg (T6a, pattern 2) records the value delivered to customers, ₹30.0 lakh, whether or not they have paid. The cost leg (T6b, pattern 5) records the inventory given up, ₹12.0 lakh. Profit on the sales is ₹18.0 lakh. Of the ₹30.0 lakh, ₹12.0 lakh is still a receivable, a promise rather than cash.
T7 (pattern 5) is ordinary expenses. Note that interest is an expense, but repaying the loan principal would not be (pattern 4).
T8 (pattern 4) settles part of the supplier balance. Cash falls and so does the liability. Profit is unaffected.
T9 (pattern 5) is depreciation: an asset and equity both fall and no cash moves. It is the "matching" of the machine's cost to the periods that benefit from it.
T10 (pattern 6) records an obligation to the tax department. Profit before tax is ₹6.8 lakh, so tax is 25% × 6.8 = ₹1.7 lakh. Nothing is paid yet.

The three statements for Meena Pump Works¶

From the ten transactions we can now write the statements. The profit and loss statement collects every change in retained earnings that came from operations:

Income statement, FY26	₹ lakh
Revenue from operations	30.0
Cost of materials consumed	(12.0)
Employee benefits expense	(6.0)
Other expenses (power, rent)	(3.0)
EBITDA	9.0
Depreciation	(1.2)
EBIT	7.8
Finance costs (interest)	(1.0)
Profit before tax (PBT)	6.8
Tax expense	(1.7)
Profit after tax (PAT)	5.1

The balance sheet is simply the closing row of the big table:

Balance sheet at 31-Mar-2026	₹ lakh		₹ lakh
PP&E (cost 12.0 less depreciation 1.2)	10.8	Share capital	20.0
Inventories	3.0	Retained earnings	5.1
Trade receivables	12.0	Total equity	25.1
Cash	18.0	Borrowings	10.0
		Trade payables	4.0
		Advance from customers	3.0
		Current tax liability	1.7
Total assets	43.8	Total equity & liabilities	43.8

And the cash summary collects everything that touched the cash column:

Cash summary, FY26	₹ lakh
Received from customers (T6)	18.0
Advance received from dealer (T5)	3.0
Paid to suppliers (T8)	(11.0)
Paid for wages, power and rent (T7)	(9.0)
Cash from operations before interest	1.0
Interest paid (T7)	(1.0)
Purchase of machine (T3)	(12.0)
Shares issued (T1)	20.0
Loan taken (T2)	10.0
Net increase in cash	18.0

The key observation. Meena earned a profit of ₹5.1 lakh, yet her operating cash flow was about zero: ₹1.0 lakh before interest, nil after. Where did the profit go? We can reconcile the two exactly:

\[ \underbrace{5.1}_{\text{PAT}} + \underbrace{1.2}_{\text{depreciation}} + \underbrace{1.7}_{\text{tax not yet paid}} - \underbrace{12.0}_{\text{receivables}} - \underbrace{3.0}_{\text{inventory}} + \underbrace{4.0}_{\text{payables}} + \underbrace{3.0}_{\text{advance}} = 0.0 \]

The profit is tied up in receivables (₹12.0 lakh) and unsold materials (₹3.0 lakh). Some of that is funded by suppliers (₹4.0 lakh unpaid) and by the dealer's advance (₹3.0 lakh). The ₹18.0 lakh in the bank is mostly Meena's and the bank's money, not profit. This gap between profit and cash is working capital. It is the single most common reason a growing, profitable company runs out of cash, and Kaveri Pumps has exactly this problem at a much larger scale (its receivables rose from ₹146.1 Cr in FY23 to ₹346.7 Cr in FY26). 02.5 formalises this reconciliation and 04.4 analyses it.

Trader's lens

Double entry is the same discipline as a trading desk's position-keeping. Every fill books two legs, the position and the cash (or the margin), and the end-of-day reconciliation checks that yesterday's equity + today's P&L + capital flows = today's positions at marks + cash. A break means an unbooked or mis-booked trade, and nobody goes home until it is found. A company's books work the same way: the equity roll-forward (Section 7) is its P&L attribution, and a balance sheet that "doesn't balance" is a reconciliation break, never a real-world phenomenon.

5. Debits and credits: the bookkeeper's sign convention¶

Accountants don't write "cash +20, share capital +20". They write a journal entry using debits (Dr) and credits (Cr). This notation confuses many newcomers because in everyday banking language "credit" sounds good and "debit" sounds bad. In accounting they mean only left and right.

The rule¶

Move everything to one side of the expanded equation so that all terms are positive:

\[ \underbrace{\text{Assets} + \text{Expenses} + \text{Dividends}}_{\text{increase with a DEBIT}} \;=\; \underbrace{\text{Liabilities} + \text{Share capital} + \text{Retained earnings} + \text{Revenue}}_{\text{increase with a CREDIT}} \]

Accounts on the left (assets, expenses, dividends) increase with a debit and decrease with a credit.
Accounts on the right (liabilities, equity, revenue) increase with a credit and decrease with a debit.
Every journal entry must have total debits = total credits. That single rule is what keeps the equation balanced.

A common mnemonic is DEALER: Dividends, Expenses, Assets are debit-normal; Liabilities, Equity, Revenue are credit-normal.

It also explains the banking confusion. When you deposit money, your bank "credits your account" because, in the bank's books, your deposit is a liability: the bank owes you. Your own books would debit cash.

The signed-vector view (for engineers)¶

If you prefer linear algebra, assign debit = +1 and credit = −1. Then:

Each transaction is a vector \(\Delta \in \mathbb{R}^n\) over the \(n\) accounts with \(\sum_i \Delta_i = 0\).
The ledger is the running sum of those vectors, and the trial balance (the list of all account balances) must also sum to zero.

That zero-sum property is a checksum. It catches arithmetic and posting errors. It does not catch judgement errors. If a company records ₹50 Cr of routine repair costs as "Dr PP&E 50 / Cr Cash 50" instead of "Dr Repairs expense 50 / Cr Cash 50", the books balance perfectly and profit is overstated by ₹50 Cr. A balanced trial balance proves the books are consistent, not that they are right. Most accounting manipulation is perfectly balanced.

Meena's ten transactions as journal entries (₹ lakh)¶

#	Account debited	Dr	Account credited	Cr
T1	Cash	20.0	Share capital	20.0
T2	Cash	10.0	Borrowings	10.0
T3	Plant & machinery	12.0	Cash	12.0
T4	Inventory (raw materials)	15.0	Trade payables	15.0
T5	Cash	3.0	Advance from customers	3.0
T6a	Cash Trade receivables	18.0 12.0	Revenue from operations	30.0
T6b	Cost of materials consumed	12.0	Inventory	12.0
T7	Employee benefits expense Other expenses Finance costs	6.0 3.0 1.0	Cash	10.0
T8	Trade payables	11.0	Cash	11.0
T9	Depreciation expense	1.2	Accumulated depreciation	1.2
T10	Tax expense	1.7	Current tax liability	1.7

Note T9: depreciation is credited to a separate accumulated depreciation account rather than directly to the machine. The balance sheet shows gross block (original cost, ₹12.0 lakh) less accumulated depreciation (₹1.2 lakh) = net block (₹10.8 lakh). Kaveri reports exactly this: gross block ₹830.0 Cr less accumulated depreciation ₹334.7 Cr = net block ₹495.3 Cr at FY26.

T-accounts¶

A T-account is the ledger page for one account, drawn as a "T": debits on the left, credits on the right. Here is Meena's cash account for the year:

Cash — Dr (in)	₹ lakh	Cash — Cr (out)	₹ lakh
T1 Shares issued	20.0	T3 Machine	12.0
T2 Bank loan	10.0	T7 Wages, power, rent, interest	10.0
T5 Dealer advance	3.0	T8 Suppliers	11.0
T6a Customer receipts	18.0
Total debits	51.0	Total credits	33.0
Closing debit balance	18.0

And the inventory account:

Inventory — Dr	₹ lakh	Inventory — Cr	₹ lakh
T4 Purchases	15.0	T6b Consumed in pumps sold	12.0
		Closing debit balance	3.0

The inventory T-account is the most useful one to remember, because it is an identity you will use constantly:

\[\text{Opening inventory} + \text{Purchases} - \text{Consumed} = \text{Closing inventory}\]

Given any three terms you can solve for the fourth. The Schedule III income statement is built on it ("cost of materials consumed", "changes in inventories"; see 02.3).

The trial balance¶

List every account's closing balance (before the year-end "closing" step below):

Account	Debit balances	Credit balances
Cash	18.0
Trade receivables	12.0
Inventory	3.0
Plant & machinery (gross)	12.0
Accumulated depreciation		1.2
Borrowings		10.0
Trade payables		4.0
Advance from customers		3.0
Current tax liability		1.7
Share capital		20.0
Revenue from operations		30.0
Cost of materials consumed	12.0
Employee benefits expense	6.0
Other expenses	3.0
Finance costs	1.0
Depreciation expense	1.2
Tax expense	1.7
Total	69.9	69.9

Debits equal credits (₹69.9 lakh each). The checksum passes.

Closing the books¶

Revenue and expense accounts are temporary. They accumulate one period's performance and are then reset to zero. At year-end the bookkeeper "closes" them into retained earnings:

Closing entry	Dr	Cr
Revenue from operations	30.0
Cost of materials consumed		12.0
Employee benefits, other expenses, finance costs		10.0
Depreciation expense		1.2
Tax expense		1.7
Retained earnings (the balancing figure = PAT)		5.1

After closing, only the permanent accounts (assets, liabilities, equity) carry balances into FY27. That is the balance sheet. The income statement is the detailed history of one period's change in retained earnings. Keep that sentence in mind; it is the key to Section 7.

Why analysts rarely need debits and credits, and when they do¶

You will almost never write a journal entry as an investor. Published statements are already aggregated, and you reason at the level of line items and their effects on the equation. Nobody asks an analyst to prepare a trial balance.

But the vocabulary shows up in documents you will read:

Accounting-policy and transition notes say things like "the cumulative effect was debited to retained earnings" (equity fell) or "credited to OCI" (other comprehensive income rose).
Indian formats show accumulated losses as a "debit balance of the statement of profit and loss", presented as a negative figure within other equity (per the ICAI Guidance Note on Schedule III, Division II).
GST-era commercial language uses credit notes (issued to a customer, reducing revenue, e.g. for rebates or returns) and debit notes.

More important is the habit that double entry teaches: for every number, ask "what was the other leg?" If revenue jumped, did cash rise, or receivables? If the company spent ₹200 Cr and profit didn't fall, which asset went up instead? If cash is "large" but interest income is tiny, what is the other leg of that cash balance (the Satyam question, 09.4)? Most forensic work is this question asked persistently.

6. Periods: stocks, flows and why the calendar matters¶

Look again at the three statements for Meena. Their headings differ in a way that matters:

The balance sheet is "as at 31 March 2026": a stock, a snapshot at an instant.
The income statement and cash-flow statement are "for the year ended 31 March 2026": flows over a period.

In trading terms, the balance sheet is your position and the income statement is your P&L. You would never divide a day's P&L by the closing position without thinking about what happened intraday; for the same reason, ratios that mix a flow and a stock (return on equity, receivable days) usually use the average of the opening and closing balance sheets (04.3).

The accounting period. Businesses run continuously, but reports cut them into periods. In India the financial year runs 1 April to 31 March: FY26 = April 2025 to March 2026. Listed companies also report quarterly: Q1 = April–June, Q2 = July–September, Q3 = October–December, Q4 = January–March (03.4). Kaveri's FY26 quarters sum exactly to its annual figures (revenue ₹355.9 + 263.6 + 290.0 + 408.5 = ₹1,318.0 Cr).

Why periods create judgement. If every transaction started and finished within one period (buy for cash, sell for cash, same day) accounting would be trivial. The difficulty is that the period boundary cuts through transactions:

A machine bought this year serves for ten years. How much of its cost belongs to this year? (Depreciation, 02.7.)
A solar pump delivered in March but installed in April: which year's revenue? (02.2.)
A warranty given on pumps sold this year will cost money over the next two years. How much should be charged to this year? (Provisions, 02.8.)

Cut-off, meaning deciding which side of the period boundary a transaction falls on, is where many aggressive accounting choices live: shipping extra goods on 31 March, delaying a supplier invoice to 1 April. Accrual accounting, the subject of 02.2, is the set of rules for making those allocations.

7. Retained earnings: the bridge between the P&L and the balance sheet¶

The closing entry in Section 5 showed that the year's profit ends up in retained earnings. Written as a roll-forward:

\[\text{Retained earnings}_{\text{close}} = \text{Retained earnings}_{\text{open}} + \text{PAT} - \text{Dividends}\]

This is the bridge between the two main statements. The income statement explains why retained earnings changed. The balance sheet shows the level at the end. When every change in equity other than owner transactions passes through the income statement, accountants call it clean surplus. Ind AS is almost clean surplus: some gains and losses go to other comprehensive income (OCI) instead of profit and reach equity by a side door (02.3), and a few other items (such as share-based payment reserves) also move equity directly.

flowchart LR
  A["Opening equity<br/>(balance sheet, 31-Mar-2025)"] --> B["+ PAT<br/>(income statement)"]
  B --> C["+ OCI<br/>(income statement, lower section)"]
  C --> D["+ shares issued / ESOP reserve<br/>(owner transactions)"]
  D --> E["− dividends & buybacks<br/>(owner transactions)"]
  E --> F["Closing equity<br/>(balance sheet, 31-Mar-2026)"]

Under Ind AS the full roll-forward is a primary statement in its own right, the statement of changes in equity (SOCE). In the Indian (Schedule III, Division II) balance sheet, retained earnings sit inside a heading called "other equity", along with other reserves such as the securities premium, general reserve and share-based payment reserve.

Worked example 2: Kaveri Pumps' other equity, FY24 → FY26¶

Using only Kaveri's reference income statement, cash-flow statement and balance sheets (₹ Cr):

₹ Cr	FY24	FY25	FY26
Opening other equity (previous year-end balance sheet)	456.6	528.8	607.2
Add: profit after tax (income statement)	86.4	97.4	90.5
Less: dividends paid (cash-flow statement)	(15.0)	(21.0)	(24.0)
Add: share-based payment reserve (ESOP charge, non-cash)	0.8	2.0	2.4
Closing other equity (computed)	528.8	607.2	676.1
Closing other equity (reported balance sheet)	528.8	607.2	676.1

The FY26 arithmetic is 607.2 + 90.5 − 24.0 + 2.4 = 676.1. It ties to the rupee in every year; the same check works for FY21–FY23 (for example FY23: 406.0 + 62.6 − 12.0 = 456.6).

What the tie tells you:

Kaveri's reported OCI is nil in the reference data. Nothing else moved equity. (For a real company, you would expect small OCI items such as gratuity remeasurements; if the roll-forward didn't tie, the SOCE would show you what else happened.)
The ESOP line is subtle. The ₹2.4 Cr share-based payment charge is an expense inside "employee benefits" in FY26, so it reduces PAT and therefore retained earnings. The matching credit goes to the share-based payment reserve, also in other equity. Net effect on total equity: zero. No cash moves either. Yet the cost is real: it is paid by existing shareholders through dilution when options are exercised (Kaveri's diluted share count is 6.07 Cr against 6.00 Cr basic). This is why "adjusted" profit that adds back ESOP costs deserves suspicion (02.8).
Dividends bypass the income statement. They are a distribution of profit, not a cost of earning it.

A practical point about when dividends appear. A final dividend is proposed by the board after the year-end and approved by shareholders at the AGM, months later. It is not a liability at the balance-sheet date, because no obligation exists until it is declared. IAS 10 (paragraph 12), mirrored in Ind AS 10, says dividends declared after the reporting period are not recognised as a liability at that period end (IAS 10 text). So the ₹24.0 Cr Kaveri paid in FY26 includes the final dividend for FY25. Match cash-flow "dividends paid" with the equity roll-forward, not with the year's profit.

Worked example 3: Kaveri's FY25 land sale, through the equation¶

In FY25 Kaveri sold a land parcel carried at ₹4.0 Cr for ₹18.0 Cr cash. Land is not depreciated, so its carrying amount was its original cost.

Effect (₹ Cr)	Assets	Liabilities	Equity
Cash received	+18.0
Land removed from gross block	(4.0)
Gain on sale (exceptional item in the P&L)			+14.0
Net	+14.0	0.0	+14.0

The equation balances: assets up ₹14.0 Cr, equity up ₹14.0 Cr. Tax on the gain then reduces equity further. The reference data applies Kaveri's 25.17% rate throughout, so tax is ≈ ₹3.5 Cr and the after-tax gain is ≈ ₹10.5 Cr (14.0 × (1 − 0.2517) = 10.48).

The disposal is also visible in the fixed-asset roll-forward. FY25 capex was ₹54.0 Cr, of which ₹4.0 Cr went into CWIP (CWIP rose from 0.0 to 4.0), so ₹50.0 Cr was added to gross block:

\[\underbrace{734.0}_{\text{gross block FY24}} + \underbrace{50.0}_{\text{additions}} - \underbrace{4.0}_{\text{land sold}} = \underbrace{780.0}_{\text{gross block FY25}}\]

Accumulated depreciation rose by exactly the FY25 PP&E depreciation charge (258.1 + 37.0 = 295.1), because land carries none.

Two lessons for later modules. First, the ₹18.0 Cr of cash is an investing inflow, not operating cash flow, and the ₹14.0 Cr gain must be removed from profit when reconciling to operating cash flow; otherwise it would be counted twice (02.5). Second, the gain inflates FY25 profit: reported PAT fell 7.1% from ₹97.4 Cr (FY25) to ₹90.5 Cr (FY26), but excluding the land gain, profit rose. 02.3 computes the adjusted figures.

8. The three statements are three views of one ledger¶

Everything so far fits into one picture. There is a single set of books, the ledger. Each statement is a different query on it:

flowchart TB
  L["The ledger<br/>(every journal entry, debits = credits)"] --> BS["Balance sheet<br/>closing balances of permanent accounts<br/>(assets, liabilities, equity)"]
  L --> PL["Income statement<br/>this period's flows in temporary accounts<br/>(revenue, expenses)"]
  L --> CF["Cash-flow statement<br/>this period's flows in the cash account,<br/>classified: operating / investing / financing"]
  PL -- "PAT closes into retained earnings" --> BS
  CF -- "net change in cash = change in the cash line" --> BS

Because all three come from the same ledger, they must agree: PAT must reconcile to the change in retained earnings, and the net cash flow must equal the change in the balance-sheet cash line. The full set of linkages is the subject of 02.6. For now, remember that you can never understand a company from one statement alone, and that the links between them are checks you can run on any company's numbers.

Trader's lens

Equity is a residual claim: owners get whatever is left after every liability is paid, and (with limited liability) never less than zero. That is the payoff of a call option on the firm's assets struck at the face value of its debt, which is Merton's insight, developed in 06.7. Book equity is simply the accounting mark of that residual, using mostly historical-cost marks for the assets. So a P/B of 3.3x for Kaveri is like an option trading well above its "intrinsic" value on stale marks: the premium is the market's estimate of what the accounting leaves out.

India notes

Accrual and double entry are legally required. Section 128 of the Companies Act, 2013 requires every company to keep books of account "on accrual basis and according to the double entry system of accounting" (text; verified Sep-2026). Pure cash-basis books are not an option for a company.
Dividends only out of profits. Section 123 restricts dividends to the year's profits (after depreciation) or undistributed profits of earlier years (text), which is why retained earnings matter legally, not just analytically.
Vocabulary. Older Indian reports (and today's non-Ind AS companies under Schedule III, Division I) say "reserves and surplus" where Ind AS reports say "other equity". Older texts call receivables "sundry debtors" and payables "sundry creditors". Indian press and bankers often say "net worth" for book equity. Company accounts use "journal vouchers", and GST invoicing uses "credit notes" and "debit notes".
Format. Ind AS companies present statements in the Schedule III, Division II format (ICAI Guidance Note on Division II). Accumulated losses show as a negative "debit balance of profit and loss" within other equity, not as an asset.
Periods. Indian companies overwhelmingly use an April–March financial year; quarterly results follow the Q1 = Apr–Jun convention. Always check whether a figure is quarterly, year-to-date (YTD) or annual.

Common mistakes

Treating equity as cash. Meena has ₹25.1 lakh of equity and ₹18.0 lakh of cash, and most of that cash belongs, in claim terms, to the bank and the dealer. Kaveri has ₹706.1 Cr of equity and ₹32.5 Cr of cash.
Treating an asset purchase as an expense (or the reverse). Buying a machine is a swap (pattern 3); only depreciation hits profit.
Treating dividends as an expense or equity raised as income. Owner transactions never touch profit.
Treating customer advances as revenue. Cash received is not revenue until the goods or services are delivered.
Believing a balanced trial balance means the accounts are right. Every manipulation that shifts a cost into an asset balances perfectly.
Mixing stocks and flows carelessly. Dividing a year's profit by a year-end balance, or comparing a quarter's revenue with an annual figure.
Stopping at the face of the balance sheet. Guarantees, contingent liabilities and internally generated brands are not in the equation; the notes carry them.
Reading "credit" with the banking meaning. In a journal entry, credit simply means the right-hand side.

Key terms¶

Term	Meaning
Financial accounting	Standardised, periodic, audited reporting of a company's position and performance to outsiders
Asset	Present economic resource controlled by the company as a result of past events
Liability	Present obligation to transfer an economic resource, arising from past events
Equity	Residual interest in assets after deducting liabilities; the owners' claim
Accounting equation	Assets = Liabilities + Equity; holds after every transaction
Revenue / income	Increase in equity other than from owner contributions
Expense	Decrease in equity other than distributions to owners
Double entry	Recording every transaction as equal debits and credits in at least two accounts
Debit (Dr) / Credit (Cr)	Left / right side of an entry; debits increase assets, expenses and dividends; credits increase liabilities, equity and revenue
Journal entry	The record of one transaction as debits and credits
Ledger / T-account	The collection of accounts / one account's page, debits on the left and credits on the right
Trial balance	List of all ledger balances; debits must equal credits (a checksum, not a proof of correctness)
Capitalise	Record a cost as an asset to be expensed over time (e.g. through depreciation) rather than immediately
Depreciation	Systematic allocation of a fixed asset's cost to the periods that use it
Gross block / net block	Original cost of PP&E / cost less accumulated depreciation
Contract liability (advance from customers)	Cash received for goods or services not yet delivered
Temporary vs permanent accounts	Income-statement accounts reset each period / balance-sheet accounts carried forward
Closing entries	Year-end entries transferring revenue and expense balances into retained earnings
Retained earnings	Cumulative profits kept in the business; the bridge between the P&L and the balance sheet
Other equity	Ind AS balance-sheet heading for all reserves, including retained earnings, securities premium, ESOP reserve and OCI reserves
Statement of changes in equity (SOCE)	The roll-forward of every equity component from opening to closing
Clean surplus	The property that all non-owner changes in equity pass through the income statement
Stock vs flow	A balance at an instant (balance sheet) vs an amount over a period (P&L, cash flow)
Cut-off	Assigning transactions to the correct period

Check your understanding¶

1. Classify each as asset, liability, equity or not recognised, and say why: (a) a ₹5 Cr advance Kaveri paid to a copper supplier; (b) a ₹5 Cr advance Kaveri received from a state agency; (c) March's unpaid electricity bill; (d) a ₹38 Cr GST demand Kaveri is contesting and expects to win.

Answer

(a) Asset. Kaveri has a right to receive copper (an advance to suppliers, usually in other current assets). (b) Liability. Kaveri owes goods or services (a contract liability). (c) Liability. An accrued expense for power already consumed. (d) Not recognised. A contingent liability is disclosed in the notes; it becomes a provision (a liability) only if an outflow becomes probable and can be estimated (02.8).

2. In FY27 Meena Pump Works delivers the pumps the Erode dealer paid ₹3.0 lakh for in advance. The materials in those pumps cost ₹1.2 lakh. Show the effect on the equation and write the journal entries.

Answer

Revenue leg (pattern 7): advance from customers −3.0 (liability ↓), retained earnings +3.0 (revenue). Entry: Dr Advance from customers 3.0 / Cr Revenue 3.0. No cash moves; the cash came last year.

Cost leg (pattern 5): inventory −1.2, retained earnings −1.2. Entry: Dr Cost of materials consumed 1.2 / Cr Inventory 1.2.

Profit on the delivery: ₹1.8 lakh before tax, recognised in FY27 even though the cash arrived in FY26.

3. A company repays ₹50 Cr of a term loan and pays ₹8 Cr of interest on it. What happens to (a) profit, (b) the balance sheet, (c) cash?

Answer

(a) Profit falls by ₹8 Cr before tax (interest is an expense); the ₹50 Cr repayment does not touch profit. (b) Borrowings fall by ₹50 Cr; cash falls by ₹58 Cr; equity falls by ₹8 Cr before tax (via retained earnings). Check: assets −58 = liabilities −50 + equity −8. (c) Cash falls by ₹58 Cr. The repayment is a financing outflow; interest paid is classified as operating or financing depending on policy (Kaveri classifies it in financing, 02.5).

4. A company's retained earnings were ₹200 Cr at the start of the year and ₹260 Cr at the end. It paid dividends of ₹30 Cr and had no other equity movements. What was its PAT? If you also learn it booked an OCI loss of ₹5 Cr that was transferred to retained earnings, what was PAT?

Answer

Without OCI: 260 = 200 + PAT − 30, so PAT = ₹90 Cr. With the OCI loss also flowing into retained earnings: 260 = 200 + PAT − 5 − 30, so PAT = ₹95 Cr. This is why you check the statement of changes in equity before inferring profit from balance-sheet movements.

5. Verify Kaveri's FY22 other-equity roll-forward from the reference data. What does it tell you about FY22 OCI and share-based payments?

Answer

Opening other equity (FY21) 367.8 + PAT 47.2 − dividends 9.0 = 406.0, exactly the reported FY22 figure. So there were no OCI items and no ESOP charge in FY22, consistent with the reference data (ESOPs were first granted in FY24, and the share-based payment line is nil before FY24).

6. Why does a trial balance that balances not prove the accounts are correct? Give a journal entry that balances but overstates profit.

Answer

The debit = credit rule only checks internal consistency. It cannot tell which accounts should have been used. Example: routine maintenance of ₹10 Cr recorded as Dr Plant & machinery 10 / Cr Cash 10 instead of Dr Repairs expense 10 / Cr Cash 10. Both balance. The first overstates this year's profit by ₹10 Cr (less the small depreciation charge later), overstates assets by ₹10 Cr, and moves the cash outflow from operating to investing activities.

7. Suppose Meena had expensed the ₹12.0 lakh machine immediately instead of capitalising it (ignore tax on losses). What would FY26 PBT, equity and total assets be? Does the equation still balance?

Answer

Expense ₹12.0 lakh instead of depreciation ₹1.2 lakh, so PBT = 6.8 − 10.8 = (4.0) lakh. With a loss there is no tax provision, so PAT = (4.0). Equity = 20.0 − 4.0 = ₹16.0 lakh. Assets = cash 18.0 + receivables 12.0 + inventory 3.0 + PP&E 0 = ₹33.0 lakh. Liabilities = 10.0 + 4.0 + 3.0 = ₹17.0 lakh. 17.0 + 16.0 = 33.0: it balances. The cash is identical under both policies; only the timing of the expense, and therefore profit and equity, changes. This is the pattern behind most "accounting choices".

8. A company makes a 1:1 bonus issue, capitalising ₹30 Cr from reserves. Which of the nine patterns is this, and what happens to total equity, book value per share and the share price (in theory)?

Answer

Pattern 9: equity ↑ (share capital +30) and equity ↓ (other equity −30). Total equity is unchanged; no asset or liability moves. The share count doubles, so book value per share halves, and in theory the share price halves too: nothing economic happened (01.3).

Go deeper¶

Thomas R. Ittelson, Financial Statements: A Step-by-Step Guide to Understanding and Creating Financial Reports (any recent edition): builds all three statements transaction by transaction, the same approach as this lesson, at greater length.
IFRS Foundation, Conceptual Framework for Financial Reporting: the source of the definitions of asset, liability, equity, income and expense on which Ind AS is built.
ICAI, Guidance Note on Division II – Ind AS Schedule III (2017 edition): the authoritative commentary on how Indian Ind AS statements are laid out; worth skimming now and using as a reference in 02.3–02.4.
Jacob Soll, The Reckoning: Financial Accountability and the Rise and Fall of Nations (Basic Books, 2014): a readable history of double entry from Italian merchants onwards, and of why societies that kept honest books tended to prosper.
Companies Act, 2013 – Section 128: the legal requirement for accrual, double-entry books in India.

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