42
• Additional Medicare tax from federal form 8959 reported on the federal 1040, Schedule 2, line 11
• Uncollected social security and Medicare or RRTA tax on tips or group-term life insurance from Form
W-2, box 12, reported on the federal 1040, Schedule 2, line 13
• Interest on tax due on installment income from the sale of certain residential lots and timeshares
reported on the federal 1040, Schedule 2, line 14
• Interest on the deferred tax on gain from certain installment sales with a sales price over $150,000
reported on the federal 1040, Schedule 2, line 15
• Recapture of low-income housing credit reported on the federal 1040, Schedule 2, line 16
• Other additional federal taxes reported on the federal 1040, Schedule 2, line 18
Additional Medicare tax withholding from line 24 of federal form 8959, net investment income tax from federal
form 8960, and federal section 965 net tax liability payments are not added back on line 28.
If a taxpayer has elected to pay federal section 965 net tax liability in installments for federal purposes, that
taxpayer may only include the actual amount of the federal installment payment paid in 2022 in calculating
the Iowa deduction for 2022.
Married Separate Filers:
Each spouse may claim only their own federal income tax withheld.
Federal Estimated Tax Payments Made in 2022.
Enter the federal estimated income tax payments made in 2022. You may include the credit applied from your
2021 federal income tax overpayment only if the overpayment is included on line 27. You can deduct only the
federal estimated income tax payments made during calendar year 2022.
For example, include a federal estimated income tax payment for 2021 paid in January 2022, but not an
estimated tax payment for 2022 paid in January 2023.
Federal income tax includes the net investment income tax on federal form 8960 and any payments made in
2022 associated with federal section 965 net tax liability.
Taxpayers can deduct their entire estimated payment amount on line 31. However, certain amounts must be
added back on line 28, including the following:
• Excess advance premium tax credit repayment reported on the federal 1040, Schedule 2, line 2
• Federal self-employment tax reported on the federal 1040, Schedule 2, line 4
• Total additional Social Security and Medicare tax reported on the federal 1040, Schedule 2, line 7
• Additional tax on IRAs or other tax-favored accounts reported on the federal 1040, Schedule 2, line 8
• Federal household employment taxes reported on the federal 1040, Schedule 2, line 9
• Repayment of first-time homebuyer credit reported on the federal 1040, Schedule 2, line 10
• Additional Medicare tax from federal form 8959 reported on the federal 1040, Schedule 2, line 11
• Uncollected social security and Medicare or RRTA tax on tips or group-term life insurance from Form
W-2, box 12, reported on the federal 1040, Schedule 2, line 13
• Interest on tax due on installment income from the sale of certain residential lots and timeshares
reported on the federal 1040, Schedule 2, line 14
• Interest on the deferred tax on gain from certain installment sales with a sales price over $150,000
reported on the federal 1040, Schedule 2, line 15
• Recapture of low-income housing credit reported on the federal 1040, Schedule 2, line 16
• Other additional federal taxes reported on the federal 1040, Schedule 2, line 18