The tax filing deadline is Monday at midnight. You might think common last minute tax mistakes would be forgetting to sign your return or missing some money-saving reductions. But the top tax preparer at H-and-R Block sys the most common blunder is people messing up their social security number. If you make that mistake, the I-R-S
may say you never filed, becasue it relies on those numbers. The I-R-S is reminding late filers to double-check
all of their figures, attach required schedules and sign all of your forms. Many area post offices will stay open late to help last minutes filers.