Stage 1 fire restrictions, enacted for unincorporated areas of western Boulder County.

Property Tax Prepayment Frequently Asked Questions

Property Tax Prepayment Frequently Asked Questions

Can I still prepay my taxes?

Prepayment is no longer being accepted for 2022 taxes payable in 2023.

When can I expect a refund?

Once we process the tax roll from the Assessor, we will apply prepayments to taxes you owe. Any amount you overpaid will be returned to you in a check from our office. We expect to start sending out refunds beginning in February.

What if I owe money?

If your prepayment was not sufficient to cover your 2022 taxes, payable in 2023, we will notify you of the amount still owing. Any balance due should be sent to our office by January 31.

You can mail payments to our office at:

Boulder County Treasurer
PO Box 471
Boulder, CO 80306

or, overnight, at:

Boulder County Treasurer
1325 Pearl St
Boulder, CO 80302

Can I deduct my prepaid taxes on my federal income tax return?

Whether or not you can include your prepaid taxes on your federal return is determined by the IRS– not our office. You may want to consult a tax professional, as well as the recent IRS advice on the subject.

Where can I find a receipt?

You can look up your account on our website. Payment receipts are located on the left side of your account page, with the most recent listed first. Please note that your receipt will show your prepayment applied to your account in the prior tax year. At the time you made your payment, we had not yet begun the new tax year in our system.

Contact Us

Treasurer's Office

Phone: 303-441-3520
Fax: 303-441-3598

Mailing Address

PO Box 471
Boulder, CO 80306


1325 Pearl St.
1st Floor
Map and Directions Boulder Location
Hours: 8 a.m. to 4:30 p.m.
Monday - Friday

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515 Coffman St.
Suite 113
Map and Directions Longmont Location
Hours: 8 a.m. to 4:30 p.m.
Mondays only


1755 S. Public Road
Map and Directions Lafayette Location
Hours: 8 a.m. to 4:30 p.m.
Tuesdays Only
Open through Aug 27, 2024