Debit

Debit Definition

In bookkeeping, a debit is an entry on the left side of a journal entry or T-account that increases certain types of accounts and decreases others. Debits increase asset and expense accounts while decreasing liability, equity, and revenue accounts. Every transaction requires at least one debit and one credit, with total debits equaling total credits.

Debit in Practice — Example

Your graphic design business buys $1,500 worth of computer equipment. You record: Debit (left side) Equipment $1,500, Credit (right side) Cash $1,500. The debit increases your Equipment asset. Later, a client pays you $2,000 for completed work. You record: Debit Cash $2,000, Credit Design Revenue $2,000. The debit increases your Cash asset. In both cases, the debit affects the account according to its type — increasing assets, decreasing sources of funds.

Why Debit Matters for Your Books

Understanding debits is essential for double-entry bookkeeping, the foundation of accurate financial records. Every business transaction has two sides — something comes in (debit) and something goes out or is earned (credit). Without understanding both sides, you can't properly record transactions or interpret financial statements.

Debits show what you acquired or spent money on. When you see a debit to Equipment, you know an asset was purchased. A debit to Rent Expense shows money was spent on facilities. A debit to Accounts Receivable shows you earned revenue but haven't been paid yet. Reading debits tells you where your resources went.

Many bookkeeping errors come from confusing debits and credits. Knowing that debits increase assets and expenses (things you own or spend on) while credits increase liabilities, equity, and revenue (sources of funds) prevents these mistakes and helps you troubleshoot unbalanced entries.

How Debit Shows Up in QuickBooks

In QBO, debits happen automatically through transaction forms — purchasing equipment debits Equipment, paying expenses debits the expense account, receiving customer payments debits Cash. In journal entries, debits appear in the "Debits" column on the left. QBO requires balanced entries where debits equal credits. View debits in Account Registers where they show as positive amounts for asset/expense accounts and negative amounts for liability/equity/revenue accounts.

Common Mistakes

Thinking debits are always good. Bank statements show debits as money going out (bad). In bookkeeping, debits can increase valuable assets (good) or record expenses (necessary for business). Context matters.

Confusing which accounts increase with debits. Remember: Debits increase Expenses, Assets, and Losses. Credits increase Equity, Liabilities, and Revenues. Use the acronym DEALER to remember.

Not ensuring debits equal credits. Every transaction must balance. In manual journal entries, double-check that total debits match total credits before saving.

FAQ

Q: Why do debits increase assets but decrease revenues? A: It's the structure of double-entry bookkeeping that maintains the accounting equation (Assets = Liabilities + Equity). When you debit an asset (increase it), you must credit something else — often a liability, equity, or revenue account.

Q: What does a debit balance mean? A: For asset and expense accounts, a debit balance is normal and expected. For liability, equity, and revenue accounts, a debit balance is unusual and may indicate an error or special situation that needs investigation.

Related Terms

Credit

Double Entry

Compound Entry

Chart of Accounts

Balance Sheet

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