UT - Uncollected tax, on the 1040, schedule 2 line 8c is a result of the IRS-W2, box 12, containing a code of:
A - Uncollected social security or RRTA tax on tips.
B - Uncollected Medicare tax on tips.
M - Uncollected social security or RRTA tax on taxable cost of group-term life insurance over $50,000.
N - Uncollected Medicare tax on taxable cost of group-term life insurance over $50,000.
check both the actual w-2 and your w-2 entries.
