Question: how to report social security tax withheld on 1040?
Answer: The amount of Social Security payroll tax you've paid appears in Box 4 of your W-2 each year. If you've paid Social Security tax above income of $110,100, you are entitled to a credit from the IRS. If you are eligible, you enter the excess amount on Line 69 of your Form 1040, or Line 41 of Form 1040A.