Level 2 Fire Restrictions in effect for western areas of Boulder County. No fireworks, fires, open flame, or shooting (see map and flyer).

Many County services are being offered online. Additionally, a variety of resources are available for those impacted by COVID-19.

Property Tax Due Dates
Due to COVID-19, our offices in Longmont and Lafayette are closed until further notice. Our main office in Boulder is closed to the general public, with appointments available for services that require in-person exchanges. To set-up an appointment, contact us at (303) 441-3520.
Our policy on tax payments during the state of emergency for COVID-19

Property Tax Due Dates

The State of Colorado allows property taxes to be paid either in two equal installments, or in full, by the dates shown below.

Payment Due Dates for 2020

Two half payments

March 2
June 15

Full payment

April 30

  • No discounts for early payment
  • Postmark accepted for tax payments mailed to our office (except tax lien redemptions)
  • Additional fees assessed for payments made after August 1st
  • Certified funds (cashier’s check, money order, cash) required after September 1st (do not mail cash payments)
  • Please contact our office for exact amounts if your payment is late

Our online system is no longer available for paying this year’s taxes. Contact us to determine the amount you owe.


Due to the impacts of COVID-19 and the resulting executive orders allowing the Treasurer to waive interest, first half interest for taxes collected in 2020 is changed.

Delinquent Interest Chart

Taxes Paid 1st Half Full 2nd Half
March Waived by Executive Order
April Waived by Executive Order
May 1% 1%
June 1-15 2% 2%
June 16-30 2% 2% 1%
July 3% 3% 2%
August 4% 4% 3%
September – December Contact our office for amount due

Contact Us

Treasurer's Office

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

Treasurer Email


Mailing Address

PO Box 471
Boulder, CO 80306


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

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515 Coffman St.
Suite 113
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1376 Miners Dr.
Unit 105
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