A non-refundable tax credit reduces the tax you owe, but only down to zero

A non-refundable tax credit is money the government subtracts from your tax bill. If the credit is larger than the tax you owe, you lose the extra — the government does not send you the difference. This is different from a refundable tax credit, which can result in a payment to you even if you owe no tax at all.

Think of it this way: if you owe $800 in federal income tax and you have a $1,200 non-refundable credit, your tax bill drops to $0. The remaining $400 of the credit disappears. With a refundable credit, you would receive that $400 as a refund.

Non-refundable credits are common. They include the Child and Dependent Care Credit, the Lifetime Learning Credit, the Adoption Credit, and the Retirement Savings Contributions Credit, among others. Each has its own rules about who can claim it and how much it is worth.

Key Takeaways

  • Non-refundable credits can only reduce your tax bill to zero; any unused portion does not come back to you as a refund.
  • Refundable credits work differently — they can result in a payment to you if the credit exceeds what you owe.
  • The IRS Form 1040 instructions and the credit's own worksheet show whether a credit is refundable or non-refundable.
  • If you have multiple credits, you typically use non-refundable ones first, then refundable ones, to maximize your refund.
  • Some credits have income limits or other restrictions that may prevent you from using the full amount.

How non-refundable credits reduce your tax bill

The IRS calculates your tax in steps. First, it determines your total tax based on your income. Then it subtracts any tax credits you are may have access to to claim. Non-refundable credits stop subtracting once your tax bill reaches zero.

If you owe $500 and have a $500 non-refundable credit, you owe nothing. If you owe $500 and have a $700 non-refundable credit, you still owe nothing — the extra $200 is gone. You cannot carry it forward to next year or use it to reduce someone else's taxes.

Some non-refundable credits do allow you to carry forward unused amounts to future tax years, but not all. The rules depend on which credit you are claiming. The IRS instructions for each credit spell out whether carryforward is allowed.

Non-refundable credits versus refundable credits

The difference matters most when your credits are larger than your tax bill. With a refundable credit, the excess comes to you. With a non-refundable credit, it does not.

The Earned Income Tax Credit (EITC) is refundable — many people receive money back because the credit exceeds what they owe. The Child Tax Credit is partially refundable; you can receive up to $1,700 per child as a refund even if you owe no tax, but the full credit is worth more.

The Lifetime Learning Credit is non-refundable. The American Opportunity Credit is partially refundable — up to $1,000 per student can come back to you as a refund, but the full credit is $2,500.

When you have multiple credits

If you claim more than one credit, the order in which you apply them can affect your final refund. The IRS generally requires you to use non-refundable credits first. This reduces your tax bill as much as possible before you apply refundable credits.

For example, if you owe $1,200 in tax and have a $700 non-refundable credit and a $600 refundable credit, you would subtract the non-refundable credit first, leaving $500 in tax owed. Then you subtract the refundable credit, which brings your bill to zero and leaves you with a $100 refund.

If you applied them in the opposite order, you would still end up with the same result, but the IRS instructions are clear about the intended sequence. Follow the order shown in your tax software or in the Form 1040 instructions.

Income limits and phase-outs

Many non-refundable credits have income limits. If your income is too high, you cannot claim the credit at all, or the amount you can claim is reduced. These are called phase-outs.

The Lifetime Learning Credit, for instance, begins to phase out at certain income levels (which change each year) and is completely unavailable above a higher threshold. The Adoption Credit also has income limits. The Retirement Savings Contributions Credit phases out based on your adjusted gross income.

Check the IRS instructions for the specific credit you are claiming to see whether an income limit applies to you. Tax software will usually flag this automatically, but it is worth confirming if your income is close to the threshold.

How to learn about a credit is refundable

The IRS Form 1040 instructions list every credit and note whether it is refundable or non-refundable. You can also check the instructions for the specific form or schedule that goes with each credit — for example, Form 8863 for education credits or Form 8839 for the Adoption Credit.

Tax software will also identify the type of credit when you enter it. If you are preparing your return by hand, the instructions are the authoritative source. The IRS website (irs.gov) has a credits and deductions search tool that can point you to the right form and instructions.

If you are unsure whether a credit you think you may have access to for is refundable, look it up before you file. The difference can mean hundreds of dollars in your refund.

What happens if you claim a non-refundable credit you do not may have access to for

If you claim a non-refundable credit incorrectly, the IRS will disallow it during processing or during an audit. You will owe the tax you should have paid, plus interest and possibly penalties.

The most common mistake is claiming education credits when your income is too high or when someone else (like a parent) has already claimed you as a dependent. Another common error is claiming the Lifetime Learning Credit and the American Opportunity Credit for the same student in the same year — you can only claim one per student per year.

If you realize you made a mistake after filing, you can file an amended return using Form 1040-X. It is better to correct it yourself than to wait for the IRS to catch it.

Frequently Asked Questions

Can I use a non-refundable credit to reduce my tax bill below zero?

No. A non-refundable credit can only reduce your tax bill to zero. Once your tax owed reaches zero, any remaining credit is lost. A refundable credit, by contrast, can push your result below zero and result in a refund to you.

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

A tax credit directly reduces the tax you owe, dollar for dollar. A tax deduction reduces your taxable income, which then reduces your tax by a smaller amount depending on your tax bracket. A $1,000 credit saves you $1,000 in tax; a $1,000 deduction saves you roughly $100 to $370 in tax, depending on your bracket.

Can I carry forward an unused non-refundable credit to next year?

Some non-refundable credits allow carryforward, but not all. The Lifetime Learning Credit does not; any unused amount is lost. The Adoption Credit does allow a five-year carryforward. Check the instructions for the specific credit to see whether carryforward applies.

If I have both a refundable and non-refundable credit, which one do I claim first?

The IRS requires you to claim non-refundable credits first to reduce your tax bill as much as possible. Then you apply refundable credits. Tax software does this automatically, but if you are filing by hand, follow the order shown in the Form 1040 instructions.

What if my income is too high for a non-refundable credit?

If your income exceeds the limit for a credit, you cannot claim it. Some credits phase out gradually, meaning you can claim a reduced amount if your income is between the start and end of the phase-out range. Check the credit's worksheet in the IRS instructions to calculate the amount you can claim.