Updated October 19, 2026. Quick answer: Schedule 511-A is the Oklahoma subtractions schedule on Form 511. Line 5 is for Oklahoma government or federal civil service retirement and line 6 is for other retirement income, each with a limit explained in the instructions. The schedule’s total carries to line 2 of Form 511.
What this form does
The schedule is titled “Schedule 511-A: Oklahoma Subtractions” and is part of the Form 511 resident return. The Form 511 instructions for the subtractions line say “Enter the total from Schedule 511-A, line 18.” For the wider picture see Oklahoma retirement taxes and whether Oklahoma taxes pensions.
Who it applies to
Line 5 instructions: “Each individual may exclude their retirement benefits up to $10,000, but not to exceed the amount included in the Federal AGI.” “To be eligible, you must have retirement income in your name.” The instructions list the payers that count, including “The Oklahoma Public Employees Retirement System of Oklahoma”, “The Oklahoma Teacher’s Retirement System” and “The employee retirement systems created by counties pursuant to 19 OS Sec. 951”.
Line 6 instructions: “The retirement benefits must be received from the following and satisfy the requirements of the IRC:” “An employee pension benefit plan under IRC Sec. 401”; “An eligible deferred compensation plan under IRC Sec. 457”; “An individual retirement account, annuity or trust or simplified employee pension under IRC Sec. 408”; “An employee annuity under IRC Sec. 403 (a) or (b)”; and “Lump-sum distributions from a retirement plan under IRC Sec. 402 (e).”
The lines, one by one
| Line | What the form says |
|---|---|
| Line 5 | “Oklahoma government or Federal civil service retirement (see instructions for limitation)” |
| Line 6 | “Other retirement income (see instructions for limitation)” |
| Line 18 | “Total subtractions”, with the carry instruction “enter total here and on line 2 of Form 511” |
The line 5 instructions name more payers than the three listed above, including “The Oklahoma Law Enforcement Retirement System”, “The Oklahoma Firefighters Pension and Retirement System”, “The Oklahoma Police Pension and Retirement System” and “The Uniform Retirement System for Justices and Judges”.
The note under line 5 explains where a payout that fails the line 5 test may land: “Generally, there is a “1” in box 7 of your Form 1099-R for this type of distribution.” “This distribution may qualify for the “Other Retirement Income” exclusion on Schedule 511-A, line 6.”
The federal figures behind these lines are explained in Form 1040 lines 5a and 5b and Form 1040 lines 4a and 4b.
The figures the form prints
Both limits sit in single sentences. Line 5: “Each individual may exclude their retirement benefits up to $10,000, but not to exceed the amount included in the Federal AGI.” Line 6 repeats that sentence and adds how the two lines interact: “For any individual who claims the exclusions for government retirees on Schedule 511-A, line 5, the amount of the exclusion on this line cannot exceed $10,000 minus the amounts already claimed on Schedule 511-A, line 5”. “If the maximum $10,000 is claimed on Schedule 511-A, line 5, no additional amount is allowed on Schedule 511-A, line 6.”
Where the result goes next
The schedule’s last line says “enter total here and on line 2 of Form 511”. Both lines carry a paperwork instruction: for line 5, “Provide a copy of Form 1099-R.” and for line 6, “Provide a copy of Form 1099-R or other documentation.” Questions about IRAs and 401(k) plans are covered in Oklahoma tax on 401(k) and IRA withdrawals.
Edition and line numbers
This page reads the 2025 Oklahoma Form 511 packet with Schedule 511-A and its instructions for tax year 2025, the current file the Oklahoma Tax Commission served on 2026-10-19. Check the edition printed on your own form and use that edition’s line numbers.
Common mistakes
- Claiming an early payout on line 5. The instructions say “An early distribution from a retirement fund due to termination of employment prior to your retirement or disability does not qualify for the $10,000 retirement income exclusion.”
- Taking a full amount on line 6 after using line 5. The instructions say “the amount of the exclusion on this line cannot exceed $10,000 minus the amounts already claimed on Schedule 511-A, line 5”
- Counting the same civil service retirement twice. The line 5 note says “Do not include on this line the CSRS retirement benefits already excluded on Schedule 511-A, line 3.”
Related: Oklahoma retirement taxes, whether Oklahoma taxes pensions, Form 1040 lines 5a and 5b, Form 1040 lines 4a and 4b, and Oklahoma tax on 401(k) and IRA withdrawals.
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Answer againSources
- Oklahoma Form 511 packet (2025) with Schedule 511-A, Oklahoma Tax Commission: oklahoma.gov
- Related official page (not quoted): Oklahoma Tax Commission, Income Tax help center: oklahoma.gov
Read from the state revenue documents linked above on October 19, 2026. General information, not tax advice. Your own facts decide the outcome, and a preparer or the state revenue department is the right place to confirm anything consequential.