What Is a Debit in Accounting?

Definition, the debit rules, and worked examples, explained in plain English.

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Quick answerA debit is an entry on the left side of an account in double-entry bookkeeping. Debits increase asset and expense accounts, and decrease liability, equity and revenue accounts. It is usually shortened to Dr.
Also written asDr
Side of the accountLeft
Opposite ofCredit
LevelBeginner
TopicFinancial accounting · Bookkeeping

Debit in plain English

In everyday life “debit” sounds like money going out. In accounting it does not mean that. A debit is simply the left side of an account, and what it does depends on the type of account. Every transaction is recorded twice, once as a debit and once as a credit, and the two always match. That is the whole idea behind the double entry system.

The debit rules

Account typeA debit…A credit…
Assets (cash, equipment)IncreasesDecreases
Expenses (rent, wages)IncreasesDecreases
Liabilities (loans, payables)DecreasesIncreases
Equity / capitalDecreasesIncreases
Revenue (sales, fees)DecreasesIncreases

Worked example

A business buys office equipment for 2,000 and pays in cash. Equipment (an asset) goes up, so it is debited. Cash (also an asset) goes down, so it is credited.

AccountDebitCredit
Equipment2,000
Cash2,000
Total2,0002,000

Second example: paying 500 rent in cash. Debit Rent expense 500 (expense up) and credit Cash 500 (asset down). Total debits still equal total credits.

Common mistakes
  • Thinking a debit always means a decrease. For assets and expenses it is an increase.
  • Mixing up your bank’s view with your books. When your bank “debits” your account, your balance falls because, to the bank, your balance is something it owes you (a liability). In your own books, cash is an asset, so a bank withdrawal is a credit to Cash.
Exam tip
Remember DEALER: Dividends (or Drawings), Expenses and Assets are increased by debits. LER (Liabilities, Equity, Revenue) are increased by credits.

Quick check

1. Which side of an account is the debit side?

The left side.

2. You pay a supplier 300 in cash for stationery. Which account is debited?

Stationery expense is debited (expense increases) and Cash is credited (asset decreases).

3. Does a debit to a liability account increase or decrease it?

It decreases the liability. For example, repaying a loan debits Loan Payable.

Frequently asked questions

Is a debit an increase or a decrease?

It depends on the account. A debit increases assets and expenses, and decreases liabilities, equity and revenue.

Does debit mean money leaving the business?

No. Debit only means the left side of an account. Buying equipment with cash debits Equipment, which increases an asset.

What is the difference between debit and credit?

They are opposite sides of an account. Debits go on the left and credits on the right, and every transaction needs equal total debits and credits.

Why do debits always equal credits?

Because every transaction has two equal effects. This is the principle of double entry, and it is what lets you prove the books balance with a trial balance.

Keep learning

This page is for general learning. Accounting rules vary by country and standard.