The Treasurer’s Office collects taxes for real property, mobile homes, and business personal property (business equipment). The Treasurer is also the Public Trustee. Our office releases deeds of trust and processes loan foreclosures.
2025 Taxes Payable in 2026
Tax notices are mailed out late in January each year.
If you prepaid your property taxes, we have answers to common questions.
Paying Taxes
You can pay property taxes all at once or in two equal payments. Make the payment you choose by the due dates.
You can pay these four ways:
- In one of our offices
- By mail
- Online
- By phone
Payment instructions are on the back of your tax notice.
You can pay with an e-check for free. For cards, the charges are 3.29% ($5.20 minimum) for credit cards and 1.33% ($1.45 minimum) for debit cards.
If you mail us a payment, do not send cash. Make checks and money orders out to “Boulder County Treasurer.”
It’s easy to pay online. Just click the button below!
Electronic Property Tax Notices
You can receive your tax notice by e-mail instead of by mail. Please read the instructions, then click the button below to get started!
Seniors, Veterans, and Active-Duty Military
Tax Deferral for Seniors and Active-Duty Military
The tax deferral program allows some property owners to get a loan from the state to pay their property taxes. You can apply for a tax deferral with our office. The Colorado State Treasurer’s Office manages the loans and approves applications.
Take a look at the rules for seniors and active-duty military personnel to defer taxes. Contact us by phone at 303-441-3520 or email at treasurer@bouldercounty.gov to apply. You can apply from January through March for taxes you’re paying this year.
The interest rate on these loans is set by the state. By law, they use the 10-year treasury note rate.
The notice below is required by law. It only applies to you if your property is sold at a public auction.
