What do you mean by "reduced?" If you were having tax withheld from your SS, then the amount you received each month was reduced by the amount of tax withheld, just like when you worked and had tax withheld from your paychecks.
Now if you are filing a tax return, enter your SSA1099 and make sure you include the amount that was withheld for tax. The software will calculate any refund you are supposed to get back.
Go to Federal> Wages & Income>>Retirement Plans and Social Security (SSA1099 and 1099RRB) to enter your SSA1099.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
