When starting your bank reconciliation, we recommend that you enter the last day of the month on the first screen of your bank rec module:
Do not enter a fiscal period. Go through the normal process of marking the cleared deposits, checks and ACH entries. On the bank statement screen, enter the actual bank cutoff date and the figures from your statement.
Before clicking finish on the final screen, go print a trial balance for the month you are reconciling. Make sure the ending balance on your trial balance matches the Actual Computer Balance on your bank rec final screen. If they match, go finish the bank rec.
After finishing bank rec, go to the General Ledger, Fiscal Periods and mark that month as closed. This will prevent any postings to this fiscal period once your bank rec is completed. This will also keep anyone from posting void checks or receipts to that month and making your bank rec and trial balance out of balance.