Boulder County buildings are closed until June 1, but services are available online. BoCo is under a safer-at-home order with face coverings.

Resources are available for those impacted by COVID-19. For help, submit questions or call 720-776-0822 weekdays (9 am-5 pm) except 5/25.

Level 1 Fire Restrictions are now in place for western Boulder County. View the flyer and map for more details.

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 2019 taxes payable in 2020.

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 2019 taxes, payable in 2020, 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 tax year 2018. 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

Email Us

Mailing Address

PO Box 471
Boulder, CO 80306

Connect With Us

Boulder

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

Longmont

515 Coffman St.
Suite 113
Map & Directions

Office closed

Lafayette

1376 Miners Dr.
Unit 105
Map & Directions

Office closed