Closing Entries: How to Close the Books at Period End

Closing entries are the journal entries a company records at the end of an accounting period to move the balances of all temporary accounts (revenue, expenses, and dividends or draws) into a permanent equity account, usually retained earnings. Their job is to reset every income statement account to zero so the next period starts clean, and to update retained earnings for the profit or loss the business just earned. Without closing entries, this year's revenue would pile on top of last year's and the income statement would never restart.

Why closing entries are necessary at the end of each period

Temporary accounts measure activity for one period only. Revenue, cost of goods sold, salaries, rent, and every other income statement line are meant to answer a single question: how did the business do this month, quarter, or year? Permanent accounts (assets, liabilities, and equity) carry their balances forward forever. Closing entries are the bridge between the two. They take the net result of the temporary accounts and park it in retained earnings, then wipe the temporary accounts to zero so a new measurement period can begin. This is the last step of the month-end close and the reason a post-closing trial balance shows only balance sheet accounts.

The four closing entries, in order

Closing follows a fixed sequence. Most systems route everything through a temporary holding account called Income Summary, then close Income Summary itself.

If the business ran a loss, step 3 flips: you debit Retained Earnings and credit Income Summary. Small businesses that do not use an Income Summary account can close revenue and expenses directly into retained earnings and get the same result.

Closing entries example

Assume a company ends the year with $180,000 in service revenue, $110,000 in total expenses, and $15,000 in dividends declared.

Step 1: Debit Service Revenue $180,000, credit Income Summary $180,000.
Step 2: Debit Income Summary $110,000, credit the individual expense accounts $110,000.
Step 3: Income Summary now holds a $70,000 credit (net income). Debit Income Summary $70,000, credit Retained Earnings $70,000.
Step 4: Debit Retained Earnings $15,000, credit Dividends $15,000.

After these four entries, revenue, expenses, and dividends all read zero, and retained earnings rose by $55,000 ($70,000 profit minus $15,000 in dividends). That is exactly what the statement of retained earnings should show.

How closing entries are dated in the journal

Closing entries are dated as of the last day of the period being closed, for example December 31 for a calendar-year close, even if the accountant actually records them in the first week of January. Dating them on the final day keeps the income statement and the post-closing trial balance aligned to the correct fiscal period.

Closing entries vs adjusting entries

These two get confused because both happen at period end, but they do different jobs. Adjusting entries come first and make sure revenue and expenses are recorded in the right period (accruals, deferrals, depreciation). Closing entries come last and zero out the temporary accounts once those balances are final. You adjust, then you run a trial balance to confirm debits equal credits, then you close.

Do you need to record closing entries manually?

In modern accounting software the closing process is largely automated. QuickBooks Online, Xero, NetSuite, and Sage Intacct roll temporary accounts into retained earnings automatically at year end and let you set a closing date to lock the period. You still review the numbers, but you rarely key the four entries by hand. What matters is that everything feeding those accounts is complete and accurate before you close. A single unrecorded invoice or a miscoded expense flows straight into retained earnings and is tedious to unwind after the books are locked, which is why capturing every bill on time matters more than the mechanics of the close itself. Teams that let software read and code invoices, and that make sure every reimbursable business expense is captured before the cutoff, close faster and reopen fewer periods.

Common closing-entry mistakes

Three errors show up again and again. First, closing before all adjusting entries are posted, which strands accrued expenses in the wrong year. Second, forgetting to close dividends or owner draws, which overstates retained earnings. Third, leaving the period unlocked, so a late entry changes a number on financial statements you have already issued. Automating invoice capture and approvals upstream removes most of the late entries that force a reopened close in the first place. If your AP process is still a bottleneck at close, accounts payable automation software that codes and approves invoices before the cutoff is the single biggest lever on close speed.

Frequently asked questions

Are closing entries the same every period? The structure is the same four steps, but the amounts change because they reflect that period's revenue, expenses, and dividends. The accounts you close never change.

What is a post-closing trial balance? It is a trial balance run after closing entries are posted. Because every temporary account is now zero, it lists only assets, liabilities, and equity, and it should still balance debit to credit.

Do permanent accounts get closed? No. Assets, liabilities, and equity carry forward. Only revenue, expense, and dividend or draw accounts are closed.

What happens if you skip closing entries? Temporary account balances accumulate across periods, the income statement stops resetting, and retained earnings never updates for current-period profit. Financial statements become unusable until the accounts are closed.