Getting QuickBooks Online ready for year-end means cleaning up everything from the past twelve months so your books accurately reflect what happened in your business. The goal is handing your accountant clean records that make tax prep straightforward instead of a scramble.

Start with reconciliation. Every bank account, credit card, and loan should be reconciled through December 31. If you’ve been keeping up with monthly reconciliation, this is just finishing the last month. If you haven’t reconciled in a while, work backward month by month until everything matches your statements. Unreconciled accounts mean missing or duplicated transactions that will throw off your tax return.

Clean up uncategorized transactions next. QuickBooks puts anything it can’t match into uncategorized expenses or income. These need actual categories before year-end because every uncategorized transaction is either coded to the wrong account or not coded at all. Go through each one and assign it to the correct expense or income category. The categories determine where expenses land on your tax return, so accuracy here matters.

Review your accounts receivable and payable reports. For AR, look at invoices still showing as unpaid. Are they actually outstanding, or did the customer pay and it wasn’t recorded correctly? Old invoices you’ll never collect should be written off. For AP, check that bills are recorded in the right period. An expense you incurred in December but didn’t enter until January might belong in last year’s books depending on your accounting method.

Verify your payroll data if you run payroll through QuickBooks. Make sure employee information is correct, wages match what you actually paid, and tax withholdings reconcile. Errors here affect W-2s and your payroll tax filings. If you use a separate payroll service, confirm that the journal entries in QuickBooks match the payroll reports.

Prepare for 1099 filing by reviewing payments to contractors and vendors. Anyone you paid $600 or more for services during the year needs a 1099-NEC. Make sure you have W-9s on file with correct names and tax IDs. QuickBooks can generate a list of vendors who might need 1099s, but you’ll need to review it for accuracy since not every payment qualifies.

Look at your fixed assets. Any equipment, vehicles, or other assets you purchased during the year should be recorded properly with accurate purchase dates and costs. Items you disposed of or sold need to be removed from your asset list. Your accountant will handle depreciation calculations for your business tax return, but they need accurate information to do it correctly.

Close out stale balances in your accounts. Old outstanding checks that will never clear should be voided or written off. Small open balances in clearing accounts need to be resolved. Deposits in transit from months ago that never appeared in your bank account need investigation before you close the year.

If your books need more than minor cleanup, consider bookkeeping cleanup and catch-up services before tax season crunch. Getting records in order before your accountant starts means your tax return is based on accurate numbers instead of best guesses.

The cleaner your QuickBooks file at year-end, the faster and cheaper your tax preparation will be. Accountants charge for time spent sorting through messy books. Give them clean records and they can focus on tax strategy instead of data cleanup.