Not understanding. You enter the SSA-1099 for Social Security. The federal withholding in box 6 shows up on 1040 line 25b with other 1099 withholding. Your Social Security might not be taxable.
Up to 85% of Social Security becomes taxable when all your other income plus 1/2 your social security, reaches:
Married Filing Jointly: $32,000
Single or head of household: $25,000
Married Filing Separately: 0
