Normally, the employer would file amended quarterly payroll form 941, reporting the changed wages, and including payment (their half plus your half) for the extra reported SS and Medicare wages. So the employer would already know what they paid in. They could withhold that from your current checks or ask you to reimburse them. Are you just trying to doublecheck their math?
| If box 3 SS wages are |
box 4 SS withholding should be |
if box 5 Medicare wages are |
box 6 Medicare tax should be |
| 20,646.82 |
$1280.10 |
20,646.82 (6.2%) |
$299.38 (1.45%) |
118,191.97
|
$7327.90 |
118,191.97 |
$1713.78 |
If the corrected W-2 has boxes 4 and 6 blank (or using the old figure only) that is because the old withholding was unchanged, and the W-2 shows what was actually paid to the IRS, even though it was incorrect. I don't know how to fix this. The usual forms to pay uncollected social security and medicare taxes don't cover this situation.
