Updated October 16, 2026. Quick answer: Wyoming does not tax 403(b) or 457(b) withdrawals at the state level: the Legislature’s tax table lists “Individual Income Tax 0%” as the base rate.
Wyoming at a glance
| Item | What the documents say |
|---|---|
| How the state treats 403(b) and 457(b) withdrawals | No state individual income tax |
| Do the state’s documents name these plans? | The documents read name neither 403(b) nor 457(b) plans |
| Retirement exclusion or credit | Not needed; there is no state individual income tax |
| Public-employee pension rule | Not applicable |
| Rate in the documents read | Individual income tax base rate of 0% |
| Changed for 2026? | The documents read describe no change |
What the Wyoming documents say
The Wyoming Legislature’s Legislative Service Office publishes a table of state tax rates and collections that lists the individual income tax at a base rate of 0% with $0 collected. Title 39 of the Wyoming Statutes shows the former income tax chapter as “39-7-101. Repealed By Laws 1998, ch. 5, § 4”.
Neither document names 403(b) or 457(b) plans; the answer is that there is no state income tax to apply to them. Federal income tax on the same withdrawals is a separate question, covered on CMG’s pages on the federal rules.
Withholding and federal tax
Whether a state withholds is a separate rule: see state withholding on retirement withdrawals. Federal rules: 403(b) withdrawal rules and 457(b) withdrawal rules. The IRS says pension and annuity payments from a qualified employer plan have “all or some portion of the amounts you receive may be taxable”.
What the documents do not say
- Neither document names 403(b) or 457(b) plans.
- The table read is dated June 3, 2025, and the Department of Revenue’s own pages were not readable this session.
Common mistakes
- Assuming Wyoming’s rule for a 401(k) or IRA also covers a 403(b) or 457(b): read whether its documents name the plan.
Related: whether Wyoming taxes 401(k) and IRA withdrawals, Wyoming retirement taxes, whether Wyoming taxes pensions, 403(b) withdrawal rules, 457(b) withdrawal rules, and state withholding on retirement withdrawals.
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Answer againSources
- Wyoming Tax Rates and Collections (Wyoming Tax Structure, June 3, 2025): https://wyoleg.gov/InterimCommittee/2025/03-202506032-01WyomingtaxstructureratesandcollectionsJune32025.pdf
- Wyoming Statutes Title 39: Taxation and Revenue: https://wyoleg.gov/statutes/compress/title39.pdf
- IRS Tax Topic 410, Pensions and annuities: https://www.irs.gov/taxtopics/tc410
Sources: the primary documents linked above, read on October 16, 2026. General information, not tax advice. Your own facts decide the outcome, and a tax professional or the state agency itself is the right place to confirm anything consequential.