State guide
Wyoming property taxes (2026)
✓ Verified August 2026 against official county pages — 3 sources linked below.
County pages for Wyoming are on the way — the statewide dates below apply everywhere, and county pages will add local rates, contacts, and exact appeal windows.
How Wyoming property taxes work
Wyoming property taxes split into generous halves: 50% due by November 10 and the balance by May 10 of the next year — or pay the whole year by December 31. County treasurers bill; homes are assessed at 9.5% of fair market value.
County assessors mail the Notice of Value by the fourth Monday of April, and the protest clock is exactly 30 days from the notice's mail date — a written statement to the assessor, then the county Board of Equalization if it doesn't resolve.
Recent legislatures cut deep: the 25% homeowner exemption knocks a quarter off the fair market value of your primary home (up to the first $1 million), and long-term homeowners 65+ with 25 years of Wyoming property tax history can take a 50% exemption instead — one or the other, not both.
With mineral wealth carrying much of the state's budget, residential rates are low to begin with — but the new exemptions changed bills meaningfully, and the affidavit filings that claim them are the paperwork to know.
When payments are due
Halves: November 10 and May 10 — or pay the full year by December 31.
| Payment | Due | Delinquent after | Notes |
|---|---|---|---|
| First half (2026 taxes) | November 10, 2026 | November 11, 2026 | Interest accrues on late halves; paying the full year by December 31 avoids the spring installment |
| Second half | May 10, 2027 | May 11, 2027 |
How to appeal your assessment
The statewide rule: File a written statement with your county assessor within 30 days of the mail date on your Notice of Value (mailed by the fourth Monday of April)
W.S. 39-13-109(b)(i) sets the 30-day clock. Most protests start (and many end) with the assessor's informal review; unresolved cases get a County Board of Equalization hearing and can climb to the State Board.
- Read your Notice of Value (late April)It shows fair market value and your assessed value at 9.5% — and its mail date starts the 30-day protest window.
- File your written statement within 30 daysTo the county assessor, outlining why the value is wrong — free; county forms are online.
- Meet with the assessorThe informal review with comparable sales resolves most residential protests.
- Continue to the County Board of EqualizationThe county commissioners sit as the board; hearings run through summer.
- Escalate if neededCounty board decisions appeal to the State Board of Equalization.
County pages have the exact local deadlines, forms, and filing links.
Statewide exemptions
| Exemption | What it's worth | Deadline |
|---|---|---|
| 25% homeowner exemption | Exempts 25% of the fair market value of your primary single-family residence and its improved land, on the first $1,000,000 of value | Claim via the residential affidavit with your county assessor |
| Long-term homeowner exemption (50%) | For owners (or spouses) 65+ who have paid Wyoming residential property taxes for 25+ years and occupy the home 8+ months a year: 50% off the primary structure and up to 35 acres | Annual application with the county assessor |
| Veterans exemption | An assessed-value exemption for qualifying wartime veterans and surviving spouses, applied through the county | Claim with the county assessor by the annual deadline |
| Property tax refund program | State refunds part of taxes paid for income-qualified households — expanded in recent sessions | Annual application (spring) with the Department of Revenue |
Reassessment
Assessors value annually at fair market value as of January 1, with Notices of Value by the fourth Monday of April; homes are assessed at 9.5%.
Value notices (Notice of Value) usually mail in late April.
Common questions
- When are property taxes due in Wyoming?
- Halves by November 10 and May 10 — or pay the whole year by December 31 and skip the spring installment.
- How do I protest my Wyoming value?
- File a written statement with your county assessor within 30 days of the mail date on your late-April Notice of Value. It starts informal; the County Board of Equalization hears what doesn't settle.
- What is the 25% homeowner exemption?
- A quarter of your primary home's fair market value (up to the first $1 million) comes off before assessment — claimed with a simple owner-occupancy affidavit through your county assessor.
- What do long-term Wyoming homeowners get?
- At 65+, with 25 years of Wyoming residential property tax payments and 8+ months' annual occupancy, you can take a 50% exemption on the home and up to 35 acres — instead of, not on top of, the 25% exemption. Annual application.
- Why are Wyoming residential taxes so low?
- Homes are assessed at just 9.5% of market value, mineral taxes carry much of the state's load, and the new homeowner exemptions cut the base further. The Notice of Value is still worth checking — the 30-day window is short.
Sources
Every fact on this page comes from an official page. Check them yourself:
- Wyoming DOR — residential property / owner-occupied affidavit — checked 2026-08-12
- Sheridan County — tax exemptions (25% vs long-term) — checked 2026-08-12
- Albany County — appeals and dates — checked 2026-08-12