An income tax credit is a dollar-for-dollar reduction in the tax you owe, not a deduction from your income

The difference between a tax credit and a tax deduction matters enormously. A tax deduction reduces the income the IRS counts — if you earn $50,000 and claim a $10,000 deduction, you pay tax on $40,000 instead. A tax credit reduces the actual tax bill itself. If you owe $3,000 in tax and you have a $1,000 credit, you owe $2,000. One dollar of credit always saves you one dollar of tax.

This is why credits are more valuable than deductions of the same size. A $1,000 deduction might save you $120 to $370 in tax, depending on your tax bracket. A $1,000 credit saves you exactly $1,000.

The IRS offers two broad types of credits: refundable and nonrefundable. A refundable credit can reduce your tax below zero, meaning the IRS sends you money. A nonrefundable credit can only reduce your tax to zero — it cannot create a refund. Some credits are partially refundable, meaning part of the credit can exceed your tax bill and part cannot.

Key Takeaways

  • A tax credit subtracts directly from what you owe, while a deduction reduces the income you are taxed on, making credits more valuable dollar-for-dollar.
  • Refundable credits can result in a refund if they exceed your tax bill, while nonrefundable credits can only reduce your tax to zero.
  • The Earned Income Tax Credit (EITC) and Child Tax Credit are the two largest credits for most households, and both are partially refundable.
  • You claim credits on your tax return using specific forms and schedules, and the IRS matches them against your income and filing status.
  • Some credits phase out as your income rises, meaning you lose part or all of the credit once you earn above a certain threshold.

Refundable versus nonrefundable credits

A refundable credit works like this: suppose you owe $500 in federal income tax and you have a $1,200 refundable credit. After explore the credit, you owe negative $700 — meaning the IRS owes you $700. The IRS will send you that money as a refund. The Earned Income Tax Credit (EITC) is fully refundable, as is the Additional Child Tax Credit (a part of the broader Child Tax Credit). The American Opportunity Tax Credit is partially refundable — up to $1,600 of the $2,500 credit can result in a refund.

A nonrefundable credit stops at zero. If you owe $500 in tax and you have a $1,200 nonrefundable credit, the credit reduces your tax to zero, but you do not receive the remaining $700. The credit straightforward disappears. The Lifetime Learning Credit and the Saver's Credit are nonrefundable. Many taxpayers with low incomes do not benefit fully from nonrefundable credits because their tax bill is too small to absorb the entire credit.

This distinction shapes tax planning for lower-income households. A refundable credit can deliver money even if you owe no tax at all. A nonrefundable credit only helps if you have tax to offset.

The Earned Income Tax Credit and Child Tax Credit

The Earned Income Tax Credit (EITC) is the largest refundable credit in the federal tax code. It is designed for workers with low to moderate income. The credit amount depends on your income, filing status, and whether you have children. In 2024, a single filer with no children can receive up to $600; a filer with one child can receive up to $3,733; a filer with three or more children can receive up to $3,995. These amounts change each year. The EITC is fully refundable, so even if you owe no tax, you may receive a refund.

The Child Tax Credit provides up to $2,000 per child under age 17. It is partially refundable — up to $1,700 per child (in 2024) can result in a refund through the Additional Child Tax Credit. The remaining portion is nonrefundable. This credit is available to taxpayers with income below certain thresholds, which vary by filing status. The credit begins to phase out once your income exceeds $400,000 (married filing jointly) or $200,000 (single).

Both credits require you to report the child's Social Security number on your return. The IRS cross-checks this information to prevent fraud. If you claim a child who is not your dependent or who does not exist, the IRS will deny the credit and may assess penalties.

How credits phase out as income rises

Many credits are not available to higher-income taxpayers. Instead of a hard cutoff, the IRS uses a phase-out — the credit shrinks as your income rises above a threshold. The EITC, for example, increases as your income rises from zero to a peak, then decreases as income continues to rise. For a single filer with one child in 2024, the credit peaks at income around $28,000, then begins to decline. By the time income reaches roughly $46,000, the credit is zero.

The Child Tax Credit phases out at a rate of $50 per $1,000 of income above the threshold. If you are married filing jointly and earn $410,000, you have $10,000 of income above the $400,000 threshold. The credit reduces by $500 (50 dollars per thousand, times 10). If you earn $450,000, the credit reduces by $2,500, and so on.

Phase-outs matter because they can create a situation where earning an extra dollar of income actually reduces your total refund. This is rare and usually small, but it is real. Understanding where your income sits relative to phase-out thresholds can help you plan.

Other common credits and who can claim them

The American Opportunity Tax Credit provides up to $2,500 per student for undergraduate education expenses at an accredited college or university. It is partially refundable — up to $1,600 can result in a refund. You must claim it in the year the student is in school, and the student cannot be claimed as a dependent on someone else's return.

The Lifetime Learning Credit provides up to $2,000 per return (not per student) for may have access to education expenses at any level of higher education. It is nonrefundable. You can claim it for yourself, your spouse, or your dependents, but you cannot claim both the American Opportunity Credit and the Lifetime Learning Credit for the same student in the same year.

The Saver's Credit (Retirement Savings Contributions Credit) provides up to $1,000 for contributions to a retirement account — a traditional or Roth IRA, a 401(k), or similar plan. It is nonrefundable and available only to lower-income taxpayers. Your filing status and adjusted gross income determine whether you may have access to.

The Dependent Care Credit provides up to $1,050 per year for expenses you pay for childcare or adult care so you can work. It is nonrefundable. The amount depends on your income and the amount you spent.

How to claim a credit on your tax return

You claim credits on your federal tax return using specific forms and schedules. The main return form is the 1040. Credits are claimed on Schedule 3 (Other Credits), which attaches to the 1040. Some credits require additional forms — for example, the EITC requires Schedule EIC, and education credits require Form 8863.

The order in which you claim credits matters. The IRS applies nonrefundable credits first, then refundable credits. If you have multiple nonrefundable credits and your tax bill is not large enough to absorb all of them, some credits will be lost. Tax software usually handles this ordering automatically, but if you file by hand, you need to follow the IRS instructions carefully.

You must have the correct documentation to claim a credit. For the EITC, you need proof of income and, if you claim a child, the child's Social Security number and proof of relationship. For education credits, you need Form 1098-T from the school, which reports may have access to education expenses. For the Dependent Care Credit, you need the name, address, and tax ID of the care provider. The IRS does not always ask for this documentation when you file, but you must keep it in case of an audit.

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

If the IRS finds that you claimed a credit incorrectly — whether by mistake or intentionally — it will deny the credit, assess additional tax, and charge interest on the unpaid amount. If the error was substantial or repeated, the IRS may also assess a penalty. For the EITC and Child Tax Credit, which are high-fraud credits, the IRS conducts extensive matching and audits a significant percentage of claims.

Common errors include claiming a child who does not live with you, claiming a child who is not your dependent, reporting the wrong Social Security number, or overstating education expenses. If you discover an error after you file, you can file an amended return (Form 1040-X) to correct it. Filing an amended return voluntarily before the IRS contacts you may reduce or eliminate penalties.

Frequently Asked Questions

Can I claim both the Child Tax Credit and the EITC for the same child?

Yes. The EITC and the Child Tax Credit are separate credits with different rules. A child who qualifies for one may also may have access to for the other. You report the child's information on both schedules. The IRS allows you to claim both as long as the child meets the requirements for each credit.

What if my income is too high for the EITC but I have a child?

You may still claim the Child Tax Credit. The EITC phases out at lower income levels than the Child Tax Credit. A single parent with one child might lose the EITC at around $46,000 in income but still may have access to for the full Child Tax Credit until income reaches $200,000.

Do I have to file a tax return to get the EITC refund?

Yes. The EITC is only available to people who file a federal income tax return. Even if you have no tax liability, you must file to claim the credit and receive the refund. The IRS does not automatically send EITC refunds — you must claim it on your return.

Can I claim an education credit if I paid tuition with student loans?

No. Education credits are based on may have access to expenses you actually paid out of pocket. Loan proceeds do not count. If you borrowed money to pay tuition, you can claim the credit only for the amount you paid with your own funds, scholarships, or grants.

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

A deduction reduces your taxable income, so it saves you tax at your marginal rate (typically 10 to 37 percent). A credit reduces your tax bill directly, dollar for dollar. A $1,000 credit always saves $1,000 in tax. A $1,000 deduction saves $100 to $370, depending on your tax bracket.