What Does Debit Mean in Accounting and Banking?

Debits record increases and decreases to accounts in bookkeeping. While the term also appears in everyday banking, its technical meaning in accounting follows a structured set of rules that determine how financial statements are built and interpreted.

In an accounting system, the way debits are used can be counterintuitive. Confusion often comes from the fact that a debit does not always mean “money out”—its impact depends on the type of account in use.

In this article, you will learn what a debit means in both banking and accounting contexts, how debits function within double-entry bookkeeping, and how to correctly interpret debits across assets, liabilities, equity, revenue, and expenses.

What does debit mean?

The dictionary definition of debit has two meanings. The first is an expense or withdrawal that reduces a bank account balance. When you get money from an ATM or pay for a purchase with a debit card, money is deducted from your account balance. So in this case, a debit means subtraction. The second meaning refers to an accounting entry in a financial record, indicating either an increase or a reduction in a particular business account. This is where the confusion usually arises. In financial accounting, a debit can mean either “money in” or “money out,” depending on the transaction and the account that’s affected.

What does debit mean in accounting?

In financial recordkeeping, a debit is half of a process called double-entry bookkeeping. The double-entry method tracks each source of money in a business and the corresponding use of that money.

The other half of the process is called a credit. Debits and credits are entered side by side, debits on the left and credits on the right, in a running log of all business transactions called a ledger. Every transaction must have both a debit and credit entry. This is why it’s called double entry, and it ensures that a business’s books balance and that the sum of debits on the left side of the ledger equals the sum of credits on the right.

The US Securities and Exchange Commission and the Financial Accounting Standards Board require publicly traded companies to use double-entry bookkeeping in compliance with generally accepted accounting principles (GAAP) to operate and report financial results in US markets. Lenders and investors often also require double-entry accounting when considering a loan or capital infusion in a privately held company. The double-entry method often seems puzzling to novices. First, you must match transactions to the appropriate accounts for debit and credit entries. Second, the terms “debit” and “credit” are not always as simple as “add” and “subtract.” In accounting, a debit can add and a credit can subtract, depending on the account in question.

Double-entry accounting is governed by a key concept called the accounting equation:

Assets = Liabilities + Equity

The accounting equation sums up a business’s balance sheet. All assets, which represent potential uses of money to run the business, must equal the combined liabilities and equity—the money from lenders and owners used to obtain the assets. The equation means all uses of capital (assets) must balance with all sources of capital. Double-entry bookkeeping includes accounts from the income statement as well as the balance sheet, so an expanded version of the accounting equation is:

Assets + Expenses = Liabilities + Equity + Revenue

Accounts on the left side of the equation (assets and expenses) increase with a debit and decrease with a credit. Accounts on the right side (liabilities, equity, and revenue) increase with a credit and decrease with a debit. 

How debits affect the five key accounts

• Asset accounts
• Liability accounts
• Equity accounts
• Revenue accounts
• Expense accounts

Double-entry bookkeeping is built around the following five types of accounts, some of which increase and some of which decrease with a debit:

Asset accounts

Assets are what your business owns. Asset accounts include cash, accounts receivable, and tangible assets such as inventory, property, and equipment, as well as intangible assets such as patents, trademarks, and other intellectual property.

An asset account increases with a debit and decreases with a credit.

Liability accounts

Liabilities are what your business owes. Liability accounts include loans and credit card balances, accounts payable, customer credits, and unearned revenue, which is money received from customers before your business delivers goods or services.

A liability account increases with a credit and decreases with a debit.

Equity accounts

Equity is what’s left when liabilities are subtracted from assets. This signifies your business’s net worth to owners if all assets were liquidated and all liabilities paid off. Equity accounts include owners’ contributions, common stock, and retained earnings, or the portion of profit plowed back into the business and not paid out as distributions or dividends.

An equity account increases with a credit and decreases with a debit.

Revenue accounts

Revenue is money generated from the sale of products and services. Revenue accounts include sales, royalties, and investment income.

A revenue account increases with a credit and decreases with a debit.

Expense accounts

Expenses are the costs your business incurs to generate revenue. Expense accounts include rent, utility and phone bills, raw materials, and wages and salaries. Most expense accounts fall under either cost of goods sold (COGS) or selling, general, and administrative expenses (SG&A).

An expense account increases with a debit and decreases with a credit.

An example of a debit in accounting

Consider the following hypothetical example to see how a financial transaction affects each account in a double-entry bookkeeping system.

An online retailer specializing in sports and casual clothing buys $50,000 of wholesale goods to stock up its inventory, payable in 30 days. The first double-entry recording would look like this, with the debit and credit accounts both increasing:

Within 30 days, the retailer pays the wholesale distributor. The double-entry record now shows both the debit and credit sides decreasing, as cash (an asset) is used to pay the account due (a liability).

Finally, let’s say the retailer sells the clothing for $75,000 to customers who pay cash. Sales tax in the states where it sells is 6%, which works out to $4,500, for a total of $79,500. Its cost of goods sold (COGS) was $50,000, an expense, and those goods were held in inventory until sold. Here’s how the debits and credits would be entered:

This last example shows how debits and credits balance, tracking the flow of funds in the business. It also shows how balance-sheet accounts (assets and liabilities) and income statement accounts (revenue and expenses) work together in double-entry bookkeeping. A trial balance is often used to ensure debits and credits are equal. A business conducts the trial balance by listing all its accounts in the ledger and the balances of each debit and credit. Once the debits and credits are added up, they should match. If they are not equal, that means the business needs to review its accounts to spot any missing or miscalculated transactions.

Accounting software programs, such as QuickBooks, Xero, and FreshBooks, can automate a business’s ledger and bookkeeping. They include features such as real-time detection of entries that aren’t balanced, making it easier to catch and correct mistakes. Shopify merchants can use the QuickBooks integration to synchronize bookkeeping with their Shopify store and business systems.

What does debit mean in a bank account?

In banking, a debit refers to something that reduces your account balance. It could be a cash withdrawal, a payment by check or debit card, or a fee deducted by the bank, such as a returned-check charge for insufficient funds. When money is moved out of a customer's bank account, it is recorded as a debit. A debit is the opposite of a credit, when money is added to the account. You can use a debit card to get cash from an ATM or to buy goods and services. The bank is notified of a debit transaction to verify your account has a sufficient balance and to check that the card hasn’t been reported lost or stolen. Unlike a credit card, which lets you borrow with interest and repay over time, a debit card can only tap your available cash balance.