Who can apply
Use the instructions for the return’s tax year to assess earnings, filing status and qualifying children. Oklahoma Form 511-EIC provides the state calculation.
What help is available
For tax year 2025, the state instructions allow five percent of the credit calculated under the specified 2020 federal rules. Proration may apply when Oklahoma adjusted gross income is lower than federal adjusted gross income.
Documents to prepare
- Federal return and income documents.
- Qualifying-child and filing-status information.
- Completed Oklahoma Form 511-EIC and any required Schedule 511-G.
How to get started
Choose the correct year
Use the Tax Commission’s filing page to obtain the appropriate forms.
Complete the state worksheet
Follow Form 511-EIC rather than copying a current federal figure.
Claim on the return
Transfer the calculation as instructed and include required supporting forms.
After applying
Keep the worksheet and return copies. Ask a qualified tax preparer about eligibility or a corrected return if the calculation is unclear.
Website screenshots
These images show the pages captured in August 2026. Website screens and rules may have changed.
Common questions
Why does the worksheet refer to 2020?
The 2025 instructions expressly use federal requirements in effect for the 2020 tax year.
Is there a separate benefit application?
The credit is claimed through the Oklahoma income-tax return.
When is Schedule 511-G relevant?
The instructions require proration when Oklahoma adjusted gross income is lower than federal adjusted gross income.
Sources and review
Checked October 1, 2026 using 2025 resident return instructions, State EIC calculation worksheet, Tax-year filing routes. USA Assistance background guide. Program staff determine eligibility and available assistance.
Historical screenshots: source reference.