The most common reason is timing. QuickBooks might include transactions that haven’t cleared your bank yet, like checks you’ve written but recipients haven’t cashed or deposits that are still pending. Your bank statement only shows what has actually posted. So both numbers can be technically correct while looking completely different.

Bank feed issues are another frequent culprit. If you have bank feeds enabled, QuickBooks automatically downloads transactions from your bank. Sometimes transactions download twice, especially if you also enter them manually before they clear. Other times transactions fail to download or land in the wrong account. Any of these situations creates a mismatch that grows over time if you don’t catch it.

Check for unreconciled transactions. When you reconcile in QuickBooks, you’re matching your records to the bank statement and confirming they agree. If you haven’t reconciled recently, discrepancies pile up without any way to spot them. Regular reconciliation is how you find problems while they’re still easy to trace back to the source.

Opening balance problems show up more often than you’d expect. If your QuickBooks setup started with an incorrect opening balance, every report since then has been off by that amount. This happens frequently when someone connects a bank account without entering the correct starting figure or imports historical data that doesn’t match reality.

To find the discrepancy, run a reconciliation in QuickBooks and look at the uncleared transactions. These are items recorded in QuickBooks that haven’t been matched to the bank statement. Compare your actual bank statement line by line against what QuickBooks shows. The mismatch is usually hiding in plain sight once you look transaction by transaction.

If the difference is small and appeared recently, it’s often a timing issue that resolves itself in a day or two when pending transactions clear. If it’s a round number like $500 or $1,000, look for a missing or duplicate transaction in that amount. If it’s an odd number that’s been sitting there for months, you likely have an opening balance problem or a past reconciliation that was forced to balance without actually finding the issue.

A Richmond bookkeeper can help you track down stubborn discrepancies and set up your reconciliation process so these problems get caught early. The longer a mismatch sits unresolved, the harder it becomes to trace back to the original cause.