Sometimes things get missed - it's bound to happen every once in a while. If you find a mistake in a reconciliation, don't worry. Follow the section based on what type of account you're reconciling.
Reconciling an account for the first time
If you're reconciling an account for the first time, review the opening balance in QuickBooks. Make sure it matches the balance in your real-life account for whatever day you picked:
Reconciling an account you didn't enter an opening balance for
If you forgot to enter an opening balance and you're already tracking transactions in the account, here's how to enter an opening balance later on.
Reconciling transactions that are older than the opening balance
If you added older transactions to QuickBooks that are dated before your opening balance, it may impact the account's total. Here's how to reconcile older transactions so everything stays balanced.
Reconciling an account you've reconciled in the past
If you reconciled an account more than once, you likely already reviewed the opening balance.
Instead, check the beginning balance. Make sure the beginning balance for the time period you're reconciling in QuickBooks matches your bank statement:
Fixing issues during a reconciliation
If you already reviewed your opening and beginning balances, focus on the ending balance.
At the end of each reconciliation, the difference between the ending balance in QuickBooks and your bank statement should be $0.00. If there's still a difference, your accounts aren't balanced: