Every transaction your business makes — every sale, every purchase, every payment — gets recorded as a journal entry. Journal entries are the most basic unit of accounting. Everything your bookkeeper does, every number that appears on any report you receive, starts with a journal entry.

Most business owners never see them directly. The software handles them in the background. But understanding what a journal entry is and how it works makes every other part of accounting easier to follow. It also helps you catch errors that can otherwise quietly distort your financial records for months.

What Is a Journal Entry?

A journal entry is a record of a financial transaction in your accounting system. It records which accounts are affected by the transaction, by how much, and whether each account was debited or credited. It also includes a date and a description of what the transaction represents.

Journal entries are the raw material of double-entry bookkeeping. Every transaction must affect at least two accounts, and the total debits must equal the total credits. A journal entry is how that double-sided recording gets made.

In older manual accounting systems, journal entries were written in physical books called journals. Today, accounting software records them automatically as you enter transactions. But the underlying structure is identical.

The Three Parts of Every Journal Entry

1. The date. Every entry is dated. This determines which accounting period the transaction falls into. Getting the date right matters because moving a transaction from one period to another changes your financial reports for both periods.
2. The accounts and amounts. Every entry specifies which accounts are debited and credited, and by how much. The total debits must equal the total credits. An entry that does not balance is an error.
3. The description. A brief explanation of what the transaction represents. This is the human-readable record that makes it possible to understand an entry months or years later without having to reconstruct the context. Vague descriptions like "miscellaneous" or "transfer" create problems during audits and reviews. Good descriptions are specific: "Payment of April rent — Office B, 1234 Main St."

Types of Journal Entries

• Regular (general) journal entries are the everyday recordings of business transactions — invoices, payments, purchases, payroll, and similar recurring activities. In modern accounting software, most of these are created automatically when you record a transaction through the standard input screens.
• Adjusting journal entries are made at the end of an accounting period to account for items that have been earned or incurred but not yet recorded through regular transactions. They are how accrual accounting works in practice. A separate guide on adjusting entries covers these in detail.
• Closing entries are made at the end of a fiscal year to reset revenue and expense accounts to zero for the new year. The balances are transferred to the retained earnings account. This is typically handled automatically by accounting software at year-end.
• Reversing entries are optional entries made at the start of a new period to reverse certain adjusting entries from the previous period. They simplify bookkeeping in cases where the adjusting entry created a temporary balance that will be offset by a real transaction in the new period.

Five Worked Examples

Example 1: You issue an invoice to a client for $4,000 of consulting services. Debit accounts receivable $4,000 (an asset — money the client now owes you). Credit service revenue $4,000 (revenue earned). The invoice has been issued and the revenue recorded, even though no cash has arrived yet.

Example 2: The client pays the $4,000 invoice. Debit cash $4,000 (asset increases as money arrives in the bank). Credit accounts receivable $4,000 (asset decreases because the debt is now settled). The cash has arrived. The receivable is cleared.

Example 3: You pay three months of office rent upfront — $3,600 total. Debit prepaid expenses $3,600 (asset — you paid for something you have not yet used). Credit cash $3,600 (asset decreases as the payment goes out). Each month, a separate adjusting entry will move $1,200 from prepaid expenses to rent expense as you use each month of the space.

Example 4: You receive a $15,000 business loan. Debit cash $15,000 (asset increases). Credit loan payable $15,000 (liability increases — you now owe this amount). The money is in the bank. The corresponding obligation is recorded.

Example 5: You pay your bookkeeper $600 for the month. Debit bookkeeping expense $600 (expense increases). Credit cash $600 (asset decreases). The cost is recognised. The payment is recorded.

Where to See Journal Entries in Your Accounting Software

In QuickBooks Online, go to Accounting in the left menu, then Chart of Accounts. Click "View Register" on any account to see the individual entries. For journal entries specifically, go to New and select Journal Entry.

In Xero, go to Accounting, then Manual Journals to see manual entries. The general ledger report shows all journal entries per account for any date range.

In Wave, transactions can be viewed under Accounting and then Transactions. Manual journal entries are available under Accounting and then Journal Transactions.

Most accounting software also has an "audit log" or "audit trail" that shows every entry made, who made it, and when. This is a critical document if questions ever arise about changes to the books.

Common Journal Entry Mistakes

Wrong date. Posting a December transaction in January, or vice versa, changes the financials for both months. Always check the transaction date before saving. In accrual accounting this matters even more because revenue and expenses must be recorded in the period they were earned or incurred.

Using suspense accounts as a long-term fix. When a transaction cannot be properly categorised, some bookkeepers post it to a suspense account temporarily. That is acceptable as a short-term placeholder. It becomes a problem when suspense account balances sit unresolved for weeks or months, meaning a growing portion of the books is improperly classified.

Editing or deleting historical entries. Once a period is closed and reconciled, entries should not be edited or deleted. The correct approach is to create a new, correcting journal entry. Many accounting platforms log all deletions and edits, and auditors specifically look for unusual changes to historical records.

Vague descriptions. As mentioned earlier, "miscellaneous," "adjustment," or "transfer" tell you nothing about why an entry was made. Get into the habit of writing brief but specific descriptions. Your future self and your accountant will thank you.

The Short Version

A journal entry is the record of a financial transaction in your accounting system. Every entry has a date, two or more accounts, and equal debit and credit amounts. Regular entries record everyday transactions. Adjusting entries align the books with reality at period-end. Closing entries reset revenue and expense accounts at year-end.

You do not need to create journal entries manually in most situations. But understanding what they are makes everything else in bookkeeping more readable, and helps you catch the kind of errors that compound quietly when left unaddressed.