Line 22 on Form 1040 is your income tax after nonrefundable credits have been subtracted, but before self-employment tax and other additional taxes are added. It is not your total tax. That label belongs to Line 24, which adds the Schedule 2, Part II amounts on Line 23 to whatever you entered on Line 22.1Internal Revenue Service. IRS Form 1040 – 2025 U.S. Individual Income Tax Return Think of Line 22 as a checkpoint: base tax minus credits, with more tax still to come for many filers.
How the Number on Line 22 Is Built
Line 22 is the result of a short chain of lines above it. Line 16 holds your income tax, pulled from the IRS tax tables or Tax Rate Schedules using the taxable income on Line 15. If you have qualified dividends or long-term capital gains, Line 16 instead comes from the Qualified Dividends and Capital Gain Tax Worksheet, which applies the 0%, 15%, or 20% preferential rates to that portion of your income.
Line 17 picks up certain taxes from Schedule 2, Part I, mainly the Alternative Minimum Tax and any repayment of excess advance premium tax credits for marketplace health coverage. Lines 16 and 17 are added together on Line 18.1Internal Revenue Service. IRS Form 1040 – 2025 U.S. Individual Income Tax Return
Then come the credits. Line 19 is the child tax credit and credit for other dependents, figured on Schedule 8812. Line 20 captures the other nonrefundable credits from Schedule 3, Part I, including:2Internal Revenue Service. Schedule 3 (Form 1040) 2025
- the foreign tax credit, which offsets U.S. tax on income already taxed abroad
- the child and dependent care credit for expenses that let you work
- education credits (American Opportunity and Lifetime Learning)
- the retirement savings contributions credit for lower-income savers
- residential energy credits for solar panels, heat pumps, and similar improvements
Lines 19 and 20 are totaled on Line 21 and subtracted from Line 18. What’s left is Line 22.3Internal Revenue Service. Line-by-Line Instructions Free File Fillable Forms
What Happens When Credits Are Larger Than Your Tax
Line 22 cannot go below zero. If your nonrefundable credits on Line 21 exceed the tax on Line 18, you enter zero on Line 22 and the leftover credit is lost; nonrefundable credits can erase your income tax but cannot generate a refund on their own.
Refundable credits work differently and show up later in the form, not on Line 22. The Earned Income Tax Credit and the refundable portion of the child tax credit (the Additional Child Tax Credit) can push your account past zero and produce a payment from the IRS even when you owed nothing in tax.4Internal Revenue Service. Refundable Tax Credits If you’re expecting one of those, don’t look for it in the Line 22 math.
Why Line 22 Is Not Your Total Tax
The form labels Line 24 — not Line 22 — as “This is your total tax.” Line 23 sits between them and brings in the total from Schedule 2, Part II. Lines 22 and 23 are added together on Line 24.1Internal Revenue Service. IRS Form 1040 – 2025 U.S. Individual Income Tax Return
The distinction matters because the taxes on Schedule 2, Part II bypass Line 22 entirely. Nonrefundable credits never touch them. So a filer with heavy credits can show zero on Line 22 and still owe thousands on Line 24.
What Gets Added After Line 22
Schedule 2, Part II is a long list, but a few items drive most of the gap between Line 22 and Line 24.5Internal Revenue Service. Schedule 2 (Form 1040) 2025 Additional Taxes
Self-Employment Tax
If you had net earnings from freelancing, a sole proprietorship, or another self-employed activity, you owe self-employment tax covering both halves of Social Security and Medicare. The combined rate is 15.3%: 12.4% for Social Security on net earnings up to the wage base, plus 2.9% for Medicare on all net earnings with no cap.6Internal Revenue Service. Self-Employment Tax (Social Security and Medicare Taxes) For 2026, the Social Security wage base is $184,500.7Social Security Administration. Contribution and Benefit Base You figure the tax on Schedule SE, and it flows to Schedule 2, Part II, Line 4, then into Line 23. Half of it comes back as an adjustment to income on Schedule 1, reducing AGI before Line 16 is calculated.
Additional Medicare Tax
A 0.9% Additional Medicare Tax applies once your wages and self-employment income exceed $200,000 for single filers or $250,000 for married couples filing jointly. It is calculated on Form 8959 and lands on Schedule 2, Part II.8Internal Revenue Service. Questions and Answers for the Additional Medicare Tax
Net Investment Income Tax
A separate 3.8% tax applies to net investment income — interest, dividends, capital gains, rental income, and similar earnings — when modified adjusted gross income exceeds $200,000 (single) or $250,000 (married filing jointly). It applies to the lesser of your net investment income or the amount by which MAGI exceeds the threshold.9Internal Revenue Service. Topic No. 559, Net Investment Income Tax
Early Retirement Distribution Penalty
Withdraw from an IRA, 401(k), or similar account before age 59½, and you generally owe a 10% additional tax on the taxable portion. Exceptions exist for disability, certain medical expenses, and first-time home purchases from IRAs, but by default the 10% is reported on Schedule 2, Part II.10Internal Revenue Service. Retirement Topics – Exceptions to Tax on Early Distributions
Other Items in Part II
Schedule 2, Part II also picks up household employment taxes if you paid a nanny or housekeeper, uncollected Social Security and Medicare tax on tips or group-term life insurance, and various recapture taxes when you benefited from a credit in a prior year but no longer qualify.5Internal Revenue Service. Schedule 2 (Form 1040) 2025 Additional Taxes
Reading Line 22 on Your Own Return
If you’re checking your return, Line 22 tells you one thing cleanly: how much income tax you owe after your nonrefundable credits have done their work. It does not tell you what you’ll pay or what you’ll get back. For that, keep reading down the form. Line 24 is your total tax. The lines below it subtract federal income tax withheld from your W-2, your Form 1040-ES estimated payments, and any refundable credits.11Internal Revenue Service. Estimated Taxes If payments and refundable credits exceed Line 24, the overpayment lands on Line 34 and your refund choice goes on Line 35a. If Line 24 is larger, you owe the balance on Line 37.12Internal Revenue Service. Instructions for Form 1040 (2025)