Big Horn County, WyomingProperty records & tax offices
Links open the listed public-office or service-provider website in a new tab. This directory does not collect payments.
Find the right property record
Use the property portal for ownership and assessed value, the collector for a bill or balance, and the map for parcel location. Have the address, owner name, or parcel number ready.
Tax bills & filing dates
These are the dates and qualifications recorded in the directory. Confirm your tax year and current deadline with the official office and your property’s notice.
- Payment deadline
- For 2026 property taxes: first 50% installment due November 10, 2026; second 50% installment due May 10, 2027; full payment by December 31, 2026 avoids interest on the first half (Wyoming statutory schedule).
- Assessment appeal
- Within 30 days of the mail date on the 2026 assessment schedule; Big Horn County states this review deadline but does not publish a specific 2026 mail date.
Exemptions & appeals
View exemption application (opens in a new tab)Exemption filing
March 1, 2026 for the 2026 Wyoming 25% homeowner exemption owner-occupancy affidavit; the local County Assessor reviews eligibility.
Senior relief
2026 Wyoming long-term homeowner exemption: an owner or spouse age 65 or older who has paid Wyoming residential property taxes for at least 25 years, owns and occupies the primary residence at least 8 months per year, and applies annually may receive a 50% exemption; the 2026 statewide statutory deadline was the fourth Monday in May (May 25, 2026), subject to county administration. Veteran exemptions and the Wyoming Department of Revenue property-tax refund program may also apply; eligibility and filing rules vary.
For a valuation appeal, use the appeal date in the tax and filing section above. Keep your notice, supporting evidence, and proof of submission.