If your employer provided more than $50,000 of group-term life insurance coverage during the year, the amount included in your income is reported as wages in Box 1 of Form W-2. Also, it is shown separately in Box 12 with Code C.
Box 12 will also show the amount of uncollected Social Security and Medicare taxes on the excess coverage, with codes M and N. You must pay these taxes with your income tax return. When the amounts and codes are entered on the Form W-2 in the program, the amounts will automatically transfer to Schedule 2 (Form 1040), Line 8. The text UT and the total amount of the taxes will be printed on the dotted line next to Line 8 when you print your return.
Per the IRS Instructions for Form 1040, page 95:
Uncollected social security and Medicare or RRTA tax on tips or group-term life insurance. This tax should be shown in box 12 of Form W-2 with codes A and B or M and N. Identify as "UT."
Per the IRS Instructions for Form W-2:
Code A - Uncollected social security or RRTA tax on tips. Include this tax on Form 1040. See the Form 1040 instructions.
Code B - Uncollected Medicare tax on tips. Include this tax on Form 1040. See the Form 1040 instructions.
Code C - Taxable cost of group-term life insurance over $50,000 (included in boxes 1, 3 (up to social security wage base), and 5).
Code M - Uncollected social security or RRTA tax on taxable cost of group-term life insurance over $50,000 (former employees only). See the Form 1040 instructions.
Code N - Uncollected Medicare tax on taxable cost of group-term life insurance over $50,000 (former employees only). See the Form 1040 instructions.
Note. If this text is applicable to your return, determined by the information entered, the TaxAct program will automatically place the text in the correct location on the return. The text will appear on the printed (or print previewed) form, but is not visible on the screen view of the form (only available to users of the Desktop version of the program).
Interest and additional tax on compensation deferred under a section 409A nonqualified deferred compensation plan that doesn't meet the requirements of section 409A. See section 409A(a)(1)(B) to figure the interest and additional tax on this income. Report this interest and tax on Schedule 2 (Form 1040), line 8. This income is included in the amount in box 4, Guaranteed payments.