Updated October 29, 2026. Quick answer: No. The state portal says “Wyoming does not possess an individual or corporate income tax.” That leaves a FERS or CSRS annuity untaxed by the state, though it is still on the federal return.
What Wyoming does with a FERS or CSRS annuity
| Question | What the Wyoming documents say |
|---|---|
| What the source says | The State of Wyoming says it does not have an individual or corporate income tax, so a federal civil service pension (CSRS or FERS) is not taxed by the state on that basis; neither document mentions federal pensions by name. |
| Change for 2026 | No 2026 change is printed in the state documents cited here. |
How this differs from other pensions in Wyoming
The documents draw no distinction between federal pensions and other income; with no individual income tax, federal and private pensions are treated alike today. See also Does Wyoming tax pensions? and military retirement pay.
FERS, CSRS and your TSP
The state documents cited here do not address TSP withdrawals. For the Thrift Savings Plan itself, see Does Wyoming tax TSP withdrawals? and the TSP calculator.
Where this rule sits on the Wyoming return
Wyoming collects no individual income tax, so there is no state return to report an annuity on and no line to claim.
Checks before you rely on this answer
- Confirm your move date if you moved to Wyoming during the year, because the other state may tax part of the year.
- Keep reporting the annuity on your federal return as usual.
- Check Wyoming’s other taxes, such as property tax, separately, because this page covers income tax only.
What the Wyoming documents leave open
Neither document names pensions, CSRS, FERS or the TSP, so the answer rests on the statement that no individual income tax exists. No Department of Revenue page stating it was found, and there are no return instructions because Wyoming has no individual income return.
Common mistakes
- Assuming no state tax means no tax at all. A taxable FERS or CSRS annuity is still on the federal return.
- Keeping a former state’s rule in mind after a move. The state you live in decides which rule applies.
Related: Does Wyoming tax pensions?, Wyoming military retirement pay, and FERS, TSP and Social Security sequencing.
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Answer againSources
- About Wyoming: https://www.wyo.gov/about-wyoming
- Wyoming Taxation Rates and Collections (June 3, 2025 presentation): https://wyoleg.gov/InterimCommittee/2025/03-202506032-01WyomingtaxstructureratesandcollectionsJune32025.pdf
Read from the state documents linked above on October 29, 2026. General information, not tax advice.