Closing entries in accounting are the four journal entries you record at the end of an accounting period to zero out your temporary accounts and move the period’s net result into equity. Revenue, expenses, and owner draws or dividends all get wiped to zero so the next period starts clean, while assets, liabilities, and equity carry forward. The mechanics are the same whether you post them by hand or let software do it, and getting them right is what makes your financial statements and tax figures reliable.
Which Accounts Get Closed
Every account in your general ledger is either temporary or permanent, and only temporary accounts get closed. Temporary accounts track activity within a single period: revenues, expenses, and owner draws or dividends. Their balances have to be reset to zero at period-end so next period’s income statement measures next period’s performance, not a running total on top of prior years.
Permanent accounts stay put. Assets, liabilities, and equity represent the cumulative financial position of the business, so their balances roll from one period into the next. Your cash balance on December 31 is your cash balance on January 1. Closing entries never touch these accounts directly. What they do is update the equity component by funneling the period’s net income or loss into retained earnings, for a corporation, or the owner’s capital account, for a sole proprietorship.
The Income Summary Account
Before revenue and expense balances land in equity, they pass through a holding account called income summary. It exists only during the closing process and sits at zero the rest of the year. Its job is to collect the period’s revenues and expenses in one place so the net figure is visible before you transfer it out.
Routing the numbers through income summary keeps equity clean. Rather than post dozens of individual revenue and expense lines directly against retained earnings, you send them all to income summary first, let them net out, and transfer a single number. That makes it much easier for anyone reviewing the books to trace how the period’s profit or loss was built. Once the transfer to equity is done, income summary is back at zero.
What You Need Before You Start
Closing entries are built from the adjusted trial balance, which is the trial balance after all end-of-period adjustments have been recorded: depreciation, accrued expenses, prepaid allocations, and anything else needed to match revenues with the expenses that produced them. If those adjustments are incomplete or wrong, every closing entry built on top of them carries the error into your permanent records.
Confirm that total debits equal total credits on the adjusted trial balance before you post anything. That’s your last clean checkpoint. An imbalance here means something was posted incorrectly during the adjustment phase and needs to be found before you go further. In larger organizations, one person typically prepares the closing entries and a separate reviewer approves them, which reduces the chance of mistakes or manipulation slipping through.
The Four Closing Entries
The closing sequence always follows the same four steps in the same order. To make it concrete, assume a small business with these adjusted balances: Service Revenue $80,000 (credit), Rent Expense $24,000 (debit), Salaries Expense $40,000 (debit), Utilities Expense $6,000 (debit), and Owner’s Draws $10,000 (debit).
Step 1: Close Revenue to Income Summary
Revenue accounts normally carry credit balances, so you close them by debiting each revenue account for its full balance and crediting income summary for the total. In the example, debit Service Revenue $80,000 and credit Income Summary $80,000. Service Revenue now sits at zero, and income summary carries an $80,000 credit.
Step 2: Close Expenses to Income Summary
Expense accounts carry debit balances, so you flip them: debit income summary for the total and credit each expense account for its balance. Debit Income Summary $70,000 and credit Rent Expense $24,000, Salaries Expense $40,000, and Utilities Expense $6,000. All three expense accounts go to zero. Income summary now shows a net credit of $10,000, which is the period’s profit: $80,000 in revenue minus $70,000 in expenses.
Step 3: Close Income Summary to Equity
The net balance in income summary moves into the owner’s equity account. A credit balance means a profit, so you debit Income Summary $10,000 and credit Owner’s Capital (or Retained Earnings, for a corporation) $10,000. If the business had a loss, the entry flips: credit income summary and debit equity. After this entry, income summary is back at zero and equity reflects the period’s results.
Step 4: Close Draws or Dividends to Equity
Owner’s draws, or dividends for a corporation, reduce equity but aren’t expenses, so they don’t run through income summary. Close them directly against equity. Debit Owner’s Capital $10,000 and credit Owner’s Draws $10,000. The draws account goes to zero, and equity is reduced by the amount withdrawn. After all four entries, every temporary account sits at zero and equity reflects both the period’s earnings and any distributions.
Account Names by Entity Type
The four-step process is identical regardless of entity type. Only the account names change. A sole proprietorship closes net income into the owner’s capital account and closes withdrawals directly against that same capital account. A corporation closes net income into retained earnings and closes dividends declared against retained earnings. Partnerships work like sole proprietorships but split the net income across each partner’s individual capital account based on the partnership agreement.
If your textbook shows “retained earnings” and you run a sole proprietorship, substitute “owner’s capital.” The debit-and-credit logic doesn’t change.
Verifying the Close With a Post-Closing Trial Balance
Recording the four entries in your general journal isn’t enough on its own. Each entry has to be posted to the corresponding ledger accounts so the balances actually update. After posting, every temporary account should show zero, and equity should reflect the combined effect of net income and any draws or dividends.
Then generate a post-closing trial balance. It lists only the accounts that still carry balances, and those should be exclusively permanent accounts: assets, liabilities, and equity. If any revenue, expense, or draws account appears with a balance, something went wrong during closing and needs to be corrected before the new period begins. The post-closing trial balance also serves as the opening balance sheet for the next cycle. Confirming that its debits equal its credits is the final check that the books are in order.
When Accounting Software Closes the Books for You
If you use QuickBooks, Xero, or most other modern accounting platforms, the software performs the closing entries automatically when the fiscal year rolls over. You won’t see a separate closing journal entry in the transaction list. The system transfers net income to retained earnings behind the scenes, and you can verify the result by opening the retained earnings account detail, where each automatic closing entry appears with its date and amount.
Automation eliminates the manual work but not your responsibility to verify the result. You still need to confirm that all adjusting entries were recorded before the close, review the post-closing trial balance for accuracy, and set a closing date password to prevent anyone from posting transactions into a closed period. The software handles the mechanics. The judgment calls are still yours.
Fixing Errors Found After Closing
Errors discovered after closing fall into two categories. Minor errors caught early in the new period can usually be corrected with a standard adjusting entry. Material errors that affect previously issued financial statements require a prior period adjustment, meaning you restate the beginning balance of retained earnings rather than run the correction through the current income statement. Under generally accepted accounting principles, the cumulative effect of the error is reflected in opening equity for the earliest period presented, and any previously issued financial statements have to be adjusted to show the correct figures.
Whether an error is “material” isn’t purely a math question. The SEC’s guidance on materiality makes clear that no single percentage threshold decides whether a misstatement matters. Even a small dollar error can be material if it turns a reported loss into a gain, masks a trend in earnings, affects compliance with loan covenants, or conceals an unlawful transaction. Size and context both matter when you decide how to handle it.1U.S. Securities and Exchange Commission. Staff Accounting Bulletin No. 99 – Materiality
Reversing Entries on Day One of the New Period
Reversing entries are an optional step taken on the first day of a new period. They undo accrual adjustments from the previous period so that when the actual invoice or payment arrives, your staff can process it through normal routines without worrying about double-counting. If you accrued $3,000 in wages payable on December 31, a reversing entry on January 1 removes that accrual. When you pay the wages later in January, the full payment posts to expense as usual, and the net effect across both periods is correct.
Reversing entries aren’t required, but they simplify life in businesses with many accruals. Without them, whoever processes the January payment has to remember that part of the expense was already recorded in December and split the entry accordingly. That’s where mistakes happen.