Here's how you can tell which deduction you took on last year's federal tax return:
If the amount on Line 12a of last year's Form 1040 ends with a number other than 0, you itemized.
If this amount ends with 0, it's likely you took the Standard Deduction.
If this amount ends with 00 or 50, you probably took the Standard Deduction.
If your return included Schedule A, you itemized.




