2026 fiscal calendar
Know the tax date before it becomes a penalty date.
Tax bills, payment rules, and valuation-review windows are controlled by the local jurisdiction and the governing state framework. The verified record below separates published figures from dates that require confirmation with Gunnison County Assessor.
Effective rate
Gunnison publishes statutory assessment-rate components and local mill levies, but no single current countywide effective property-tax percentage.
Statement mailing
End of January 2027; Gunnison County states property-tax statements are mailed by the end of January.
Payment deadline
For 2026 taxes payable in 2027: first half due February 28, 2027; full payment due April 30, 2027; second half due June 15, 2027. Gunnison states delinquent interest begins March 1, May 1, or June 16, respectively, after the applicable deadline.
Valuation protest
May 1 through June 8, 2026 for real property; a written appeal to the County Board of Equalization is due by September 15, 2026.
Critical payment warning
Do not assume a grace period.
The verified county record identifies the payment timing above but does not establish a universal penalty schedule for this page. Late charges, interest, collection costs, tax-sale procedures, and lien or foreclosure timelines can depend on state law and the local collector’s process. If the deadline is close or a balance is delinquent, contact the tax collector directly and request the current payoff amount in writing.
Treat the published payment deadline as a hard operational date and retain your receipt or confirmation number.
Read the calendar in order
From assessment to collection
1. Valuation and notice
Review the assessment notice as soon as it arrives. The protest window may run from the notice date rather than from the payment due date.
2. Statement and account review
Match the tax statement to the parcel or account number and confirm exemptions, assessed value, taxing units, credits, and balance.
3. Payment confirmation
Use the official collector channel, then save the receipt, transaction reference, and date posted. A bank submission is not always the same as a county posting date.