Publication 51
taxmap/pubs/p51-011.htm#en_us_publink1000195661When there are discrepancies between amounts reported on Form
943 filed with the IRS and Forms W-2 and W-3 filed with the SSA, the IRS must
contact you to resolve the discrepancies.
To help reduce discrepancies:
- Report bonuses as wages and as social security and Medicare
wages on Forms W-2 and 943;
- Report social security and Medicare wages and taxes separately
on Forms W-2, W-3, and 943;
- Report social security taxes on Form W-2 in the box for social
security tax withheld (box 4), not as social security wages;
- Report Medicare taxes on Form W-2 in the box for Medicare
tax withheld (box 6), not as Medicare wages;
- Make sure that social security wages for each employee do
not exceed the annual social security wage base; and
- Do not report noncash wages that are not subject to social
security or Medicare taxes as social security or Medicare wages.
To reduce the discrepancies between amounts reported on Forms
W-2, W-3, and 943:
- Be sure that the amounts on Form W-3 are the total amounts
from Forms W-2, excluding any amounts from Forms W-2 that were marked void, and
- Reconcile Form W-3 with your Form 943 by comparing amounts
reported for the following items.
- Federal income tax withholding, social security wages, and
Medicare wages.
- Social security and Medicare taxes. The amounts shown on Form
943, including current year adjustments, should be approximately twice the
amounts shown on Form W-3.
Amounts reported on Forms W-2, W-3, and 943 may not match for
valid reasons. If they do not match, you should determine that the reasons are
valid. Keep your reconciliation so that you will have a record of why amounts
did not match in case there are inquiries from the IRS or the SSA.