Upcoming Colorado tax sales
10 upcoming Colorado county tax sales are on our calendar, from Monday, October 26 to November 19, 2026: 10 tax lien certificate sales, in 10 counties.
Each date was read on the county's own page, or the auction platform it links to; every row links to that source and says when we checked it. Confirm there before you register — dates move and lists shrink as owners pay.
Colorado rules in brief
Colorado's rate is nine points above the federal discount rate, set each September 1 by the State Bank Commissioner (C.R.S. 39-12-103): 13% for liens sold from October 1, 2026. Bidders compete on a premium that goes to the county and earns no interest (C.R.S. 39-11-115). From August 1 of the third calendar year after the sale the holder can apply for a treasurer's deed, which now means a public auction (C.R.S. art. 11.5); the owner can redeem until seven days before it.
The statute, how bidding works and the mistakes that cost new buyers money are in the Colorado guide.
Upcoming Colorado sales by month
October 2026 · 3 sales
Every state in October 2026 →- Oct 26, 2026Adams CountyTax lien certificate
RealAuction (online, adams.coloradotaxsale.com)
Live tax sale Oct 26 – Nov 6; registration Oct 19–30. The county marks all dates as subject to change.
- Oct 28, 2026El Paso CountyTax lien certificate
RealAuction (online)
Deposit, ACH redemption details and participation acknowledgement due Oct 27 at 2pm MST. 13% rate for 2026.
- Oct 30, 2026Routt CountyTax lien certificate
Zeus Auction (online)
Registration opens Oct 2, closes Oct 29 at 2pm MST.
November 2026 · 7 sales
Every state in November 2026 →- Nov 2, 2026Denver CountyTax lien certificate
RealAuction (online, denver.coloradotaxsale.com)
Registration, deposits and pre-bids from Oct 12; registration and deposits close Oct 26 at 2pm. Batches close hourly from Nov 2 at 8am to Nov 4 at noon; 10% deposit; 13% rate.
- Nov 5, 2026Weld CountyTax lien certificate
RealAuction (online, weld.coloradotaxsale.com)
New investor registration Oct 9 (8am) to Oct 31 (2pm); minimum 10% deposit by ACH. Certificates issued after Jan 1, 2026 expire after 7 years.
- Nov 6, 2026Mesa CountyTax lien certificate
RealAuction (online)
Deposits due Oct 23, 2pm; winnings due Nov 9, 2pm. Some county pages still show Oct 16.
Official source: mesacounty.us ↗checked Oct 10, 2026 - Nov 10, 2026Eagle CountyTax lien certificate
RealAuction (online, eagle.coloradotaxsale.com)
Official source: eaglecounty.us ↗checked Aug 24, 2026 - Nov 12, 2026Jefferson CountyTax lien certificate
SRI / Zeus Auction (online, Nov 12–13)
Registration with SRI Oct 19 to Nov 10. Parcels offered in PIN order.
- Nov 13, 2026Boulder CountyTax lien certificate
In-person (Boulder County Courthouse, 1325 Pearl St.)
Registration opens 7:30am on sale day; bidding starts after 8:30am. Premium bidding, 13% rate; 2025 sale averaged a 5.6% premium.
- Nov 19, 2026Larimer CountyTax lien certificate
In-person (Larimer County Fairgrounds)
Registration and bidder numbers 7:30am, bidding begins 8:30am.
Deadlines before you bid
Registration, deposit and payment rules for the upcoming Colorado sales, as the counties' own pages state them:
- Adams County (sale Oct 26): Live tax sale Oct 26 – Nov 6; registration Oct 19–30. The county marks all dates as subject to change.
- El Paso County (sale Oct 28): Deposit, ACH redemption details and participation acknowledgement due Oct 27 at 2pm MST. 13% rate for 2026.
- Routt County (sale Oct 30): Registration opens Oct 2, closes Oct 29 at 2pm MST.
- Denver County (sale Nov 2): Registration, deposits and pre-bids from Oct 12; registration and deposits close Oct 26 at 2pm. Batches close hourly from Nov 2 at 8am to Nov 4 at noon; 10% deposit; 13% rate.
- Weld County (sale Nov 5): New investor registration Oct 9 (8am) to Oct 31 (2pm); minimum 10% deposit by ACH. Certificates issued after Jan 1, 2026 expire after 7 years.
- Mesa County (sale Nov 6): Deposits due Oct 23, 2pm; winnings due Nov 9, 2pm. Some county pages still show Oct 16.
- Jefferson County (sale Nov 12): Registration with SRI Oct 19 to Nov 10. Parcels offered in PIN order.
- Boulder County (sale Nov 13): Registration opens 7:30am on sale day; bidding starts after 8:30am. Premium bidding, 13% rate; 2025 sale averaged a 5.6% premium.
- Larimer County (sale Nov 19): Registration and bidder numbers 7:30am, bidding begins 8:30am.
Before your first Colorado sale
Tax lien certificate sales — Colorado: you buy the unpaid tax, not the property. If the owner pays, you get your money back plus the state's rate or penalty; only if nobody redeems within the redemption period can the holder move toward a deed.
Get the final list the week of the sale, register before the county's cut-off, and check the payment form it accepts. Then research the property itself: how to research a property before a tax sale.
Sales by month
Upcoming sales by state
Every sourced date, with filters by state and sale type, is on the full auction calendar; deal alerts email you when we add a sale in a state you follow.
Built from 113 sourced sale dates on October 12, 2026. Auction dates, registration deadlines and deposits can change at any time — always confirm with the county or the listed platform before bidding, traveling or wiring funds. This is general information, not financial or legal advice.