What a tax credit does

A tax credit is a dollar-for-dollar reduction in the income tax you owe. If you owe $2,000 in federal income tax and you have a $500 tax credit, you owe $1,500 instead. This is different from a tax deduction, which reduces the income amount the IRS taxes — a deduction saves you money only at your tax rate, but a credit saves you the full amount.

The IRS offers tax credits for specific situations: having dependent children, paying for childcare, going to college, installing solar panels, or earning below certain income thresholds. Each credit has its own rules about who can claim it and how much it is worth.

Some credits are refundable, meaning if the credit is larger than what you owe, the IRS sends you the difference as a refund. Others are non-refundable, meaning they can reduce your tax bill to zero but not below. A few credits are partially refundable — they work one way up to a limit and another way beyond it.

Key Takeaways

  • A tax credit directly reduces the amount of tax you owe, dollar for dollar, unlike a deduction which only reduces your taxable income.
  • Refundable credits can result in a refund if they exceed what you owe; non-refundable credits can only reduce your bill to zero.
  • Common credits include the Earned Income Tax Credit (EITC), Child Tax Credit, American Opportunity Credit for education, and Child and Dependent Care Credit.
  • You claim tax credits on your federal tax return using specific forms and schedules, and the IRS verifies your income and other details before allowing the credit.

Refundable vs. non-refundable credits

A refundable credit works like this: you owe $800 in tax, but you have a $1,200 refundable credit. The credit first wipes out the $800 you owe, then the IRS sends you the remaining $400 as a refund check. The Earned Income Tax Credit (EITC) and the Additional Child Tax Credit are the two largest refundable credits for most households.

A non-refundable credit stops at zero. You owe $800, you have a $1,200 non-refundable credit, the credit reduces your bill to $0 — and that is where it ends. You do not get a refund for the unused $400. The American Opportunity Credit for college expenses is non-refundable, though up to $1,600 of it per student per year can be refunded if you meet income requirements.

Some credits are partially refundable. The Child Tax Credit, for example, is non-refundable up to the amount of tax you owe, but up to $1,700 per child can be refunded if you earned at least $2,500 during the year. This means a family with three children could receive up to $5,100 in refundable credit even if they owe zero tax.

Common federal tax credits and who can claim them

The Earned Income Tax Credit (EITC) is a refundable credit for people with low to moderate income who work. The amount depends on your income, filing status, and number of may have access to children. In 2024, a single filer with no children could receive up to $600; with three children, up to $3,995. You must have earned income (wages, self-employment income) to claim it.

The Child Tax Credit is worth up to $2,000 per child under age 17 at the end of the year. You claim it if the child is your dependent, has a valid Social Security number, and is a U.S. citizen, national, or resident alien. The credit phases out at higher incomes — the exact threshold depends on your filing status.

The American Opportunity Credit covers up to $2,500 per student per year for the first four years of college or university. You can claim it for tuition, fees, and course materials, but not room and board. Your income must be below $80,000 (single) or $160,000 (married filing jointly) to claim the full amount.

The Child and Dependent Care Credit covers expenses you paid for childcare or adult dependent care so you could work. The credit is worth 20 to 35 percent of what you spent, depending on your income, up to $3,000 in expenses per year. You must have earned income and file a Form 2441 to claim it.

How to claim a tax credit on your return

You claim tax credits by filing a federal income tax return, even if you do not normally have to file. Most people file using Form 1040, the main individual income tax form. The form itself does not have lines for credits — instead, you use separate schedules and forms that correspond to each credit you want to claim.

For the EITC, you file Schedule EIC with your return. For the Child Tax Credit and American Opportunity Credit, you use Form 8863 and Schedule 8812. For the Child and Dependent Care Credit, you file Form 2441. Each form asks for specific information: your income, the dependent's name and Social Security number, the amount you spent, and other details the IRS needs to verify the credit.

If you use tax software (TurboTax, H&R Block, FreeTaxUSA, or the IRS Free File program), the software walks you through questions about your situation and automatically fills in the right forms. If you file by hand or with a tax professional, you or your preparer will complete the forms and attach them to your return when you mail it or file electronically.

The IRS then reviews your return. If everything matches their records — your income, your dependents, your filing status — they allow the credit. If something does not match, they may ask for proof (like a birth certificate for a child or a tuition bill for education) before they process the credit.

Income limits and phase-outs

Most tax credits have income limits. If you earn too much, you cannot claim the credit at all, or you can claim only a reduced amount. These limits change each year and depend on your filing status (single, married filing jointly, head of household, and so on).

The EITC phases out — meaning the credit amount shrinks — as your income rises. A single filer with no children in 2024 could claim the full credit if their income was below $17,600; the credit then decreased gradually until it reached zero at $21,711. With three children, the phase-out range was much higher: the full credit applied up to $46,560, then decreased until it hit zero at $56,838.

The Child Tax Credit begins to phase out at $400,000 of income for married couples filing jointly and $200,000 for single filers. The American Opportunity Credit phases out between $80,000 and $90,000 (single) or $160,000 and $180,000 (married filing jointly). If your income falls in the phase-out range, you calculate a reduced credit amount using a worksheet on the form.

What happens if you claim a credit you are not may have access to to

If you claim a credit and the IRS finds that you did not meet the requirements, they will disallow it. This means they subtract the credit from your refund or add it to the amount you owe. If you owed $500 in tax and claimed a $1,200 credit you were not may have access to to, the IRS would recalculate: you would owe $1,700 instead of getting a $700 refund.

If the error was honest — you misunderstood the rules or made a calculation mistake — you typically owe the tax plus interest. The interest rate is set quarterly by the IRS and is usually between 8 and 10 percent per year. If the IRS believes you claimed the credit intentionally and knew you did not may have access to, they may also impose a penalty, usually 20 percent of the unpaid tax.

The IRS matches information from employers, schools, and childcare providers to your return. If you claim a child as a dependent but the child's other parent also claims them, the IRS will catch it. If you claim the American Opportunity Credit but the school did not report the tuition to the IRS, the IRS will ask you for proof. Keeping receipts, tuition statements, and childcare invoices makes it easier to respond if the IRS questions your claim.

Frequently Asked Questions

Can I claim more than one tax credit on the same return?

Yes. You can claim the EITC and the Child Tax Credit in the same year, or the American Opportunity Credit and the Child and Dependent Care Credit. However, some credits cannot be claimed together for the same person or expense. For example, you cannot claim both the American Opportunity Credit and the Lifetime Learning Credit for the same student in the same year.

What is the difference between a tax credit and a tax deduction?

A tax credit reduces your tax bill dollar for dollar. A tax deduction reduces the income amount the IRS taxes. If you are in the 12 percent tax bracket, a $1,000 deduction saves you $120 in tax; a $1,000 credit saves you $1,000. Credits are almost always more valuable than deductions of the same amount.

Do I have to file a tax return to claim a tax credit?

Yes, you must file a federal income tax return to claim a tax credit, even if you have no tax liability or would normally not have to file. The only exception is if you are claimed as a dependent on someone else's return — in that case, you cannot claim credits yourself.

Can I claim a tax credit if I am self-employed?

Yes, as long as you meet the other requirements for the credit. Self-employment income counts as earned income for the EITC. You report your self-employment income on Schedule C, and the IRS uses that figure to determine your EITC amount and whether you are within the income limits for other credits.

What if the IRS denies my tax credit claim?

The IRS will send you a notice explaining why the credit was disallowed. You have the right to respond with documentation — a birth certificate, a tuition bill, a childcare invoice — to show you met the requirements. If you disagree with the IRS decision, you can file an appeal through the IRS Office of Appeals or take your case to Tax Court.