A tax credit is money the government subtracts directly from your tax bill

A tax credit is different from a deduction. A deduction reduces the income the government counts before calculating your tax. A credit reduces the actual tax you owe, dollar for dollar. If you owe $2,000 in federal income tax and you have a $500 credit, you owe $1,500 instead. If your credits are larger than what you owe, some credits will send you money back—that is called a refundable credit.

Not all credits work the same way. Some are refundable, meaning if the credit is bigger than your tax bill, the IRS sends you the difference. Others are non-refundable, meaning they can reduce your bill to zero but no further. A few are partially refundable—they can send you back some money, but not all of it if the credit exceeds what you owe.

Key Takeaways

  • A tax credit subtracts directly from the tax you owe, not from your income, so a $1,000 credit saves you $1,000 in taxes.
  • Refundable credits can send you money back if they exceed what you owe; non-refundable credits can only reduce your bill to zero.
  • You claim credits on your tax return by filling out a specific form or schedule and attaching it to your Form 1040.
  • Some credits have income limits, so earning above a certain amount may reduce or eliminate the credit.
  • The IRS matches the credits you claim against records from employers, schools, and other institutions, so you need documentation to back them up.

Refundable versus non-refundable credits

A refundable credit is the more valuable kind because it can result in a refund. The Earned Income Tax Credit (EITC) and the Child Tax Credit are both refundable (though the Child Tax Credit is only partially refundable). If you earn $20,000, owe $800 in federal tax, and you have a $1,500 refundable credit, your bill becomes zero and the IRS sends you $700.

A non-refundable credit can only reduce your tax bill to zero. The American Opportunity Tax Credit (used for education expenses) is non-refundable. If you owe $1,200 and have a $2,000 American Opportunity credit, the credit wipes out your $1,200 bill, but you do not receive the remaining $800. The unused portion is gone.

Some credits are partially refundable. The Child Tax Credit allows you to receive up to $1,700 as a refund even if you owe no tax, but the full credit is $2,000. The rest is non-refundable.

How credits differ from deductions

The difference between a credit and a deduction matters because a credit saves you more money. Suppose you are in the 22 percent tax bracket. A $1,000 deduction saves you $220 in taxes (22 percent of $1,000). A $1,000 credit saves you the full $1,000. That is why credits are worth more than deductions of the same dollar amount.

Deductions reduce your taxable income—the number the IRS uses to calculate your tax rate. Credits reduce your tax bill itself. The standard deduction for 2024 is $14,600 for single filers and $29,200 for married couples filing jointly, but that is separate from any credits you may have.

Income limits and how they work

Many credits phase out as your income rises. The EITC, the Child Tax Credit, and the American Opportunity Tax Credit all have income thresholds. If you earn above the limit, the credit shrinks or disappears entirely. The IRS publishes these limits each year, and they vary depending on your filing status (single, married filing jointly, head of household, and so on).

For example, in 2024, the Child Tax Credit begins to reduce if your modified adjusted gross income exceeds $400,000 for married couples filing jointly or $200,000 for single filers. The credit decreases by $50 for every $1,000 (or fraction of $1,000) above the threshold. If you earn $401,000 as a married couple, you lose $50 of the credit. If you earn $402,000, you lose $100.

You need to know your income limit before you claim a credit. The IRS instructions for each form tell you what counts as income for that particular credit, because different credits use different definitions.

How to claim a credit on your tax return

You claim credits by filling out a specific form or schedule and attaching it to your Form 1040 (the main federal income tax form). The form depends on which credit you are claiming. The EITC uses Schedule EIC. The Child Tax Credit uses Schedule 8812. The American Opportunity Tax Credit uses Form 8863. Each form asks for information about you, your dependents, or your expenses, depending on the credit.

You enter the credit amount from the form onto your Form 1040 in the credits section. If you use tax software, it walks you through the questions and calculates the credit for you. If you file by hand, you follow the instructions on each form to do the math yourself.

The IRS cross-checks the information you provide. For the Child Tax Credit, they verify your children's Social Security numbers and relationship to you. For education credits, they match your information against records from the school. If something does not match, the IRS may reduce or deny the credit and send you a notice.

What documentation you need to keep

You do not send documentation with your return, but you must keep it in case the IRS asks. For the Child Tax Credit, keep birth certificates or adoption papers showing the child's relationship to you and their Social Security number. For education credits, keep receipts or statements from the school showing tuition and fees paid, and Form 1098-T if the school provides one.

For the EITC, keep pay stubs, W-2 forms, and proof of income. If you are self-employed, keep records of your business income and expenses. The IRS can request these documents for up to three years after you file, though they rarely do unless they are auditing your return.

If you claim a credit you are not may have access to to, the IRS will disallow it and you will owe the tax plus interest. If the error was unintentional, you may avoid penalties, but you will still owe the money. If the IRS suspects fraud, penalties can be steep.

When to claim a credit versus taking the standard deduction

You do not choose between credits and the standard deduction—you take both. Everyone gets the standard deduction unless they itemize deductions instead. Credits are separate and stack on top of whichever deduction you use. If you are may have access to to a credit, claim it. It will only reduce your bill further.

The only real choice is whether to itemize deductions or take the standard deduction. Itemizing means adding up all your deductible expenses (mortgage interest, property taxes, charitable donations, and so on) and using that total instead of the standard deduction. Most people save money by taking the standard deduction because it is simpler and larger than their itemized total. But if you have very high deductible expenses, itemizing may save you more. That is a separate calculation from credits.

Frequently Asked Questions

Can I claim a credit if I do not owe any taxes?

It depends on whether the credit is refundable. If you have a refundable credit like the EITC or the refundable portion of the Child Tax Credit, you can receive money back even if you owe no tax. If the credit is non-refundable, it can only reduce your bill to zero. You would not receive anything beyond that.

What happens if I claim a credit I am not may have access to to?

The IRS will disallow the credit when they process your return or during an audit. You will owe the tax you avoided, plus interest calculated from the original due date. If the error was unintentional, you may avoid penalties. Intentional fraud can result in significant penalties and possible criminal charges.

Do I need to file a tax return to get a refundable credit?

Yes. Even if you earned no income or your income was very low, you must file a return to claim a refundable credit like the EITC. The IRS will not send you money without a filed return. Some people are not required to file but choose to because a refundable credit will send them money back.

Can I claim the same credit more than once in one year?

No. Each credit can be claimed only once per tax year. However, you can claim multiple different credits on the same return. For example, you can claim both the Child Tax Credit and the EITC if you meet the requirements for both.

What if my income changes after I file?

If you claimed a credit based on an estimate and your actual income was higher, you may have to repay part or all of the credit when you file your amended return. Some credits, like the EITC, are reconciled when you file, meaning the IRS compares what you claimed to your actual income and adjusts accordingly.