Oklahoma Subtractions are deductions allowed by Oklahoma law that reduce Oklahoma taxable income. These subtractions are available to eligible resident (Form 511) and nonresident or part-year resident (Form 511-NR) taxpayers and are reported on Schedule 511-A (for residents) or Schedule 511-NR-B (for nonresidents and part-year residents). Oklahoma subtractions include specific income modifications authorized by state law, such as qualifying interest income, certain retirement benefits, military pay, and other allowable subtractions.
Common Oklahoma Subtractions
- Interest on U.S. government obligations – Interest on qualifying bonds, notes, and other obligations of the U.S. Government reported on the federal return may be excluded from Oklahoma AGI when the required documentation is provided. Interest from certain entities, including FNMA and GNMA, does not qualify.
- Social Security benefits taxed on Federal Form 1040 or 1040-SR – Social Security benefits included in federal AGI may be subtracted from Oklahoma AGI. A copy of the federal return must be provided.
- Federal civil service retirement in lieu of Social Security – An individual may exclude 100% of qualifying retirement benefits received from the Federal Civil Service Retirement System (CSRS), including survivor benefits, paid in lieu of Social Security, to the extent included in federal AGI. FERS benefits generally do not qualify, except for qualifying CSRS components and the FERS Annuity Supplement described in the Oklahoma instructions.
- Military retirement benefits – An individual may exclude 100% of retirement benefits received from any component of the Armed Forces of the United States. This subtraction is reported on Schedule 511-A, line 4.
Note: Active-duty military pay should not be described as a Schedule 511-A subtraction. Oklahoma residents who are members of any component of the Armed Services may exclude 100% of qualifying active military pay, including Reserve and National Guard pay, to the extent included in federal AGI. This exclusion is reported under Schedule 511-C (Military Pay Exclusion).
Source:
Form 511 - Resident Income Tax Return (Schedule 511-A)
Form 511-NR - Nonresident Income Tax Return (Schedule 511-NR-B)
Disclaimer: Always verify details with the most current Federal or State Department of Revenue Forms and Instructions. Tax rules may change annually, and individual circumstances may require professional advice from a CPA or tax attorney.