Rio Grande County, Colorado property-tax payment and appeal deadlines
Tax bills, payment rules, and valuation-review windows are controlled by the local jurisdiction and the governing state framework. The reviewed record below separates published figures from items that still require confirmation with Rio Grande County Assessor.
Rate context
ConfirmColorado property tax is based on local mill levies and statutory assessment rates that vary by tax area; no single current effective countywide percentage was published in the official county sources reviewed.
Statement mailing
PublishedThird week of January 2027 (approximately); Rio Grande County's official Treasurer page states tax notices are mailed during the third week of January.
Payment deadline
PublishedFor 2026 property taxes payable in 2027: first half due February 28, 2027; full payment due April 30, 2027; second half due June 15, 2027. Rio Grande County states delinquent interest is charged at 1% per month after missed deadlines.
Valuation protest
PublishedMay 1 through June 8, 2026 under Colorado's current standard real-property protest period; the official assessor page reviewed did not publish a separate 2026 cutoff.
Do not assume a grace period.
The reviewed 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 a published payment deadline as a hard operational date and retain your receipt or confirmation number.
From assessment to collection
01Valuation 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.
02Statement and account review
Match the tax statement to the parcel or account number and confirm exemptions, assessed value, taxing units, credits, and balance.
03Payment 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.