Assessment Ratio
9.5% (residential)
Appeal Deadline
May 30, 2026 or within 30 days of notice
Official Form
County Board of Equalization appeal
Risk of Increase
No
How Assessment Works in Wyoming
Wyoming assesses residential property at 9.5% of fair market value. Commercial property is assessed at 11.5%. Your tax bill is based on the assessed value (9.5% of market value), not the full market value.
How to File in Wyoming
File an appeal with the county Board of Equalization by May 30 or within 30 days of your assessment notice, whichever is later.
Step-by-Step
Wyoming Appeal Process
Receive your assessment notice from the county assessor.
Contact the county assessor for an informal review.
File an appeal with the county Board of Equalization by the deadline.
Attend the hearing and present comparable sales evidence.
If denied, appeal to the State Board of Equalization within 30 days.
FAQ
Wyoming Property Tax Appeal Questions
How does the 9.5% ratio work in Wyoming?
If your home's fair market value is $400,000, the assessed value is $38,000 (9.5%). Your tax bill is this assessed value multiplied by your local mill levy.
Can my Wyoming assessment increase on appeal?
No. Wyoming law generally protects homeowners from assessment increases during the appeal process. Your value can only stay the same or go down.
How often does Wyoming reassess?
Wyoming reassesses all property annually. The county assessor determines market value as of January 1 each year using sales data and cost approaches.