Wyoming property tax appeals, 2027
In Wyoming, you appeal a property assessment to the County Board of Equalization, and the deadline is 30 days after the date on the assessment schedule. Each county below lists its own date, how to file and who hears the appeal. Sale prices are not public record in Wyoming, so evidence leans on the county’s own data, listings and independent appraisals.
Data as of 20 Oct 2026 · 23 counties, state and county recordsHow appeals work in Wyoming
| Rule | What applies |
|---|---|
| What you argue | Market value as of January 1 of the tax year (W.S. 39-13-103(b)(i)(A)); uniformity is also recognized (Wyo. Const. art. 15, §11; W.S. 39-13-102(c)(iv)) |
| How homes are assessed | 9.5% of market value for homes. 9.5% of fair market value (W.S. 39-13-103(b)(iii)(C)), before the residential exemptions in W.S. 39-11-105(a)(xliii)–(xlvi). |
| Deadline | Written statement of reasons filed with the county assessor within 30 days after the date of the assessment schedule (W.S. 39-13-109(b)(i)). |
| First appeal to | County Board of Equalization |
| What the notice shows | Market value as “Estimated Fair Market Value”; assessed value as “Assessed Value”. Mails: On or before the fourth Monday in April (W.S. 39-13-103(b)(vii)) |
| Assessment limit | Single-family residential assessed value may rise no more than 4% a year, except for new construction or a purchase in the prior calendar year (W.S. 39-11-105(a)(xliii) structure, (xliv) land). Separate exemptions: 25% of the first $1,000,000 of fair market value for an owner-occupied home (xlvi), and 50% of the first $3,000,000 for qualifying long-term owners 65+ (xlv). |
| Sale prices public | No |
| Statutes | Grounds: W.S. 39-11-101(a)(vi), 39-13-103(b)(ii)–(iii), 39-13-102(c)(iv). Filing: W.S. 39-13-109(b)(i). Assessor’s evidence: W.S. 39-13-109(a)(i), (b)(i). |
More: how to read your notice · what a ratio is · evidence that works · deadlines in every state
Every Wyoming county
| County | Deadline | Appeal rate | Lowered | Coverage |
|---|---|---|---|---|
| Laramie County | Not yet published | — | — | Scan from recent sales |
| Natrona County | Not yet published | — | — | Scan from recent sales |
| Campbell County | Not yet published | — | — | Scan from recent sales |
| Sweetwater County | Not yet published | — | — | Scan from recent sales |
| Fremont County | Not yet published | — | — | Scan from recent sales |
| Albany County | Not yet published | — | — | Scan from recent sales |
| Sheridan County | Not yet published | — | — | Scan from recent sales |
| Park County | Not yet published | — | — | Scan from recent sales |
| Teton County | Not yet published | — | — | Scan from recent sales |
| Lincoln County | Not yet published | — | — | Scan from recent sales |
| Uinta County | Not yet published | — | — | Scan from recent sales |
| Carbon County | Not yet published | — | — | Scan from recent sales |
| Converse County | Not yet published | — | — | Scan from recent sales |
| Goshen County | Not yet published | — | — | Scan from recent sales |
| Big Horn County | Not yet published | — | — | Scan from recent sales |
| Sublette County | Not yet published | — | — | Scan from recent sales |
| Johnson County | Not yet published | — | — | Scan from recent sales |
| Platte County | Not yet published | — | — | Scan from recent sales |
| Crook County | Not yet published | — | — | Scan from recent sales |
| Washakie County | Not yet published | — | — | Scan from recent sales |
| Weston County | Not yet published | — | — | Scan from recent sales |
| Hot Springs County | Not yet published | — | — | Scan from recent sales |
| Niobrara County | Not yet published | — | — | Scan from recent sales |
Wyoming questions
When is the property tax appeal deadline in Wyoming?
Written statement of reasons filed with the county assessor within 30 days after the date of the assessment schedule (W.S. 39-13-109(b)(i)). Counties publish the exact date, and most notices print it.
Who hears a property tax appeal in Wyoming?
The County Board of Equalization hears the first appeal (W.S. 39-13-109(b)(i)).
How is a home assessed in Wyoming?
At 9.5% of market value for homes, valued as of January 1 of the tax year (W.S. 39-13-103(b)(i)(A)). Single-family residential assessed value may rise no more than 4% a year, except for new construction or a purchase in the prior calendar year (W.S. 39-11-105(a)(xliii) structure, (xliv) land). Separate exemptions: 25% of the first $1,000,000 of fair market value for an owner-occupied home (xlvi), and 50% of the first $3,000,000 for qualifying long-term owners 65+ (xlv).
What does a Wyoming assessment notice show?
The market value, labeled “Estimated Fair Market Value”, and the assessed value, labeled “Assessed Value”. Notices mail: On or before the fourth Monday in April (W.S. 39-13-103(b)(vii)).
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- Wyoming Statutes Title 39 (taxation)
- Wyoming Statutes Title 34 (statement of consideration, 34-1-142)
- 2024 HB0045, 4% residential assessment limit (enrolled)
- 2025 SF0069, 25% homeowner exemption (enrolled)
- 2026 HB0045, long-term homeowner exemption (enrolled)
- Teton County Assessor, assessment schedule
- Laramie County, property review and appeal
- Each county’s own appeal instructions and notices, read on the date shown on each county page.
- U.S. Census Bureau, county population estimates (2024).