Accounting basics · for students

Debit and credit, explained the simple way.

Debit and credit are just the left and right of every accounting entry. Learn the modern rule for each type of account, see a rules table, and follow a worked journal entry where the debits and credits tie out to the rupee.

Reviewed July 2026
7 min read
CA Anil Agarwal & the TatvaBooks team

What is debit and credit in accounting?

Every ledger account in your books has two sides. The left side is called the debit (short form Dr.) and the right side is called the credit (short form Cr.). That's it — at heart, debit and credit are just directions, left and right, nothing more.

The confusing part for students is that a debit does not always mean an increase, and it does not mean "money out". Whether a debit adds to or takes away from an account depends entirely on what kind of account it is. Once you know the account type, the rule is fixed and never changes.

The modern rule — start from the accounting equation

The cleanest way to learn debit and credit is the modern (accounting-equation) approach. Everything you own or owe fits into five buckets, and the whole system rests on one equation that must always stay balanced:

Assets = Liabilities + Capital

Assets and expenses sit on the left of the equation, so their normal balance is a debit — a debit makes them go up. Liabilities, capital and income sit on the right, so their normal balance is a credit — a credit makes them go up. Reverse the direction and you decrease the account. Here is the full rules table:

Account type	Examples	On a debit (Dr.)	On a credit (Cr.)	Normal balance
Assets	Cash, Bank, Machinery, Stock, Debtors	Increase ↑	Decrease ↓	Debit
Expenses / Losses	Rent, Salary, Purchases, Discount allowed	Increase ↑	Decrease ↓	Debit
Liabilities	Creditors, Loan, Bank overdraft, GST payable	Decrease ↓	Increase ↑	Credit
Capital / Owner's equity	Capital, Reserves	Decrease ↓	Increase ↑	Credit
Income / Gains	Sales, Commission received, Interest received	Decrease ↓	Increase ↑	Credit

A memory hook that never fails: Assets, Expenses → Debit to increase (think "AED"). Everything else — Liabilities, Capital, Income — is credit to increase. This is exactly how the double-entry system and the accounting equation keep your books balanced.

Worked example — a day in a Pune trader's books

Rules stick when you see rupees move. Say Meera Traders records these four transactions in July 2026. Follow how each one is classified, then which account is debited and which is credited.

1 Jul — Meera starts the business with ₹5,00,000 cash brought in as capital.
3 Jul — Buys a delivery scooter for ₹80,000, paying by cash.
5 Jul — Buys goods worth ₹1,20,000 on credit from Sharma & Co.
8 Jul — Pays shop rent of ₹25,000 in cash.

Here is the journal — the first book of entry — with every debit and credit shown:

Date	Particulars	Debit ₹	Credit ₹
1 Jul	Cash A/c Dr. To Capital A/c (Business started with cash)	5,00,000	5,00,000
3 Jul	Scooter (Vehicle) A/c Dr. To Cash A/c (Scooter bought for cash)	80,000	80,000
5 Jul	Purchases A/c Dr. To Sharma & Co. A/c (Goods bought on credit)	1,20,000	1,20,000
8 Jul	Rent A/c Dr. To Cash A/c (Shop rent paid in cash)	25,000	25,000
	Total	7,25,000	7,25,000

Notice the total debits (₹7,25,000) equal the total credits (₹7,25,000) — the books balance, so the entries are correct. Read each line against the rules table above: on 1 Jul, Cash (asset) rose so it was debited, and Capital rose so it was credited; on 8 Jul, Rent (expense) rose so it was debited, and Cash (asset) fell so it was credited. Every debit had an equal and opposite credit.

The Cash account as a T-account

When these journal entries are posted to the ledger, the Cash account looks like this T-account. The debit (received) side is on the left, the credit (paid) side on the right, and the difference is the closing balance:

Dr. — Cash A/c		Cr.
To Capital A/c	5,00,000	By Scooter A/c	80,000
		By Rent A/c	25,000
		By Balance c/d	3,95,000
Total	5,00,000	Total	5,00,000

Cash received ₹5,00,000 and paid out ₹1,05,000 (₹80,000 + ₹25,000), leaving a debit balance of ₹3,95,000 — which makes sense, because Cash is an asset and assets normally carry a debit balance. (The ₹1,20,000 credit purchase never touched cash, so it isn't here.)

Common mistakes & student tips

"Debit = money out" is the passbook trap. Your bank statement is written from the bank's viewpoint, not yours. In your books, receiving cash is a debit to Cash.
Don't treat debit as "good" or credit as "bad". They are just left and right. A debit to Rent (an expense) is perfectly normal.
Always classify the account first. The single most common exam error is applying a rule before deciding whether the account is an asset, liability, capital, income or expense.
Purchases vs an asset. Goods bought for resale go to Purchases (an expense); a machine or scooter you keep goes to an asset account. Both are debits, but they land in different places.
Check the balance every time. If total debits don't equal total credits, an entry is wrong — this is your built-in error alarm.

In TatvaBooks this happens automatically

Learning debit and credit by hand builds the intuition every good accountant needs — but in day-to-day business you shouldn't be writing journals manually. In TatvaBooks, you record a plain-English event ("raise a sales invoice", "pay rent", "buy stock") and the software posts the correct debit and credit behind the scenes, with GST split into CGST/SGST/IGST, the ledgers updated and the balance sheet and trial balance always in balance. You get the accounting right without touching a single Dr./Cr. line — and your CA can check the entries any time.

It's cloud-based, GST-first and free to start. See how on the cloud accounting software and GST billing software pages.

Frequently asked questions

What is the simplest definition of debit and credit?

Debit and credit are just the two sides of every accounting entry — debit is the left side and credit is the right side of a ledger account. They are not 'good' and 'bad', and they do not mean plus and minus by themselves. Whether a debit increases or decreases an account depends on the type of account: for an asset or an expense a debit is an increase, but for a liability, capital or income a debit is a decrease. In every complete transaction, total debits equal total credits.

Does debit always mean money going out?

No — that idea comes from your bank passbook, where the bank calls it a 'debit' when money leaves your account. But the bank writes entries from its own point of view (your deposit is a liability it owes you). In your own books, cash is an asset, so receiving cash is a debit to Cash and paying cash is a credit to Cash. Learn the rule 'debit increases assets' and the passbook confusion disappears.

What is the golden rule vs the modern rule of debit and credit?

They give the same answer, just from different angles. The traditional 'golden rules' classify accounts as Personal, Real and Nominal (debit the receiver / debit what comes in / debit all expenses and losses). The modern rule classifies accounts as Assets, Liabilities, Capital, Income and Expenses and works straight from the accounting equation — Assets = Liabilities + Capital. B.Com and CA Foundation students should be comfortable with both; the modern rule maps cleanly onto how accounting software actually stores your ledgers.

How do I know which account to debit and which to credit?

Follow three steps for every transaction. One: identify the two (or more) accounts involved. Two: classify each — is it an asset, liability, capital, income or expense? Three: apply the rule for that type. Example: paying ₹10,000 rent in cash touches Rent (expense — debit to increase) and Cash (asset — credit to decrease). Debit ₹10,000, credit ₹10,000. It balances, so it is correct.

Why must debits always equal credits?

Because every transaction has two equal and opposite effects — this is the double-entry system. If you buy a ₹50,000 machine for cash, one asset (Machinery) goes up by ₹50,000 and another asset (Cash) goes down by ₹50,000. The accounting equation, Assets = Liabilities + Capital, must stay balanced after every entry, so the debit total and the credit total are always equal. When they don't match, you have missed or mis-posted something.

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