Your reconciliation may be out of balance if the account was reconciled to an incorrect amount.
This can be verified by using the Reconciliation Report. (Reports > Index to Reports > Banking) Display the report dated as of the last reconciliation date. (You can find this date displayed in the Reconcile Accounts window.)
When the report displays, compare the Expected Balance on Statement amount with the MYOB Balance amount that appears at the end of the report. The two amounts should be the same (if no previously reconciled transactions have been deleted). Both of these amounts should be the same as the balance of the last reconciled bank statement. If, however, both amounts differ from the ending balance of the last reconciled bank statement, the reconciliation was fudged.
Any corrective action will depend upon why the last reconciliation was incorrectly reconciled. Check with your accountant before making any adjustments. If the cause can't be determined, enter an adjustment deposit/withdrawal to offset the out of balance. Allocate the adjustment to an Other Income (8-xxxx) or Other Expenses (9-xxxx) account. Again, we recommend that you check with your accountant before making such an adjustment.
Once a correcting transaction has been entered, open the Reconcile Accounts window and select the checking account. Enter the same date that you see displayed in the Last Reconciled Date field into the Bank Statement Date field. Select the adjustment transaction as cleared. The Calculated Statement Balance should now be the same as the opening balance of the current bank statement. If it is, click Reconcile.