Quick answer. A federal tax credit reduces income tax dollar for dollar. A refundable credit can also increase a refund when the credit is larger than the tax owed. If you are filing during 2026, first check which tax year applies: most returns filed in 2026 cover tax year 2025, while tax-year 2026 rules generally apply to returns filed in 2027.
Key takeaways
- The Earned Income Tax Credit can reduce tax and may increase a refund for eligible low- to moderate-income workers and families.
- The Child Tax Credit is nonrefundable; the Additional Child Tax Credit is the refundable part available to some eligible taxpayers.
- The Premium Tax Credit is refundable and applies to eligible coverage purchased through a federal or state Health Insurance Marketplace.
- The Saver’s Credit may be available for eligible retirement-plan, IRA or ABLE contributions, subject to income and other eligibility rules.
- Use the rule and income limits for the correct tax year; do not reuse a prior-year amount without checking the IRS.
Which year are you checking?
The year in a filing guide can be confusing. The IRS states that its tax-year 2026 inflation adjustments generally apply to returns filed in 2027. If you are preparing a return during the 2026 filing season, you will usually be checking tax-year 2025 amounts and eligibility rules instead.
| Credit | What it can do | What to verify |
|---|---|---|
| Earned Income Tax Credit | Can reduce tax and may increase a refund. | Income, filing status, qualifying children or dependents, and other eligibility rules for the applicable tax year. |
| Child Tax Credit / Additional Child Tax Credit | The CTC reduces tax; the ACTC may provide a refundable amount to some eligible taxpayers. | Qualifying-child rules, Social Security number requirements, income, earned income, and the correct tax year. |
| Premium Tax Credit | Helps eligible individuals and families pay for Marketplace health-plan coverage. | Marketplace coverage, household information, income, advance-credit reconciliation, and Form 8962 requirements. |
| Saver’s Credit | May provide a credit for eligible retirement-plan, IRA or ABLE contributions. | Adjusted gross income, age, student/dependent status, eligible contributions, and recent distributions. |
What to do next
- Confirm whether you are checking tax year 2025 or tax year 2026.
- Open the IRS page for the specific credit rather than relying on a general summary.
- Use the IRS Interactive Tax Assistant or the credit’s official eligibility tool when available.
- Keep records that support the eligibility facts and amounts reported on the return.
- Use a qualified tax professional for advice about your circumstances.
Detailed tax-credit guides
Official sources
- IRS tax-year 2026 inflation adjustments
- IRS Earned Income Tax Credit
- IRS Child Tax Credit
- IRS Premium Tax Credit overview
- IRS Saver’s Credit
Source review: IRS pages checked July 26, 2026. This page provides general information, not individualized tax advice. No professional tax review has been performed.

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