Boulder County government offices closed Tuesday, Dec. 24 (at noon), and Wednesday, Dec. 25, for the Christmas holiday.

Property Tax Due Dates

Certified funds are required for all tax payments as of Oct 1. Online payment is no longer available. Our office in Lafayette is closed for the year; it will reopen in late January 2025.

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 2024

Two half payments

February 29
June 17

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

If you choose to mail us a payment, do not include cash. Checks and money orders should be made payable to “Boulder County Treasurer.”

LOOK UP / PAY PROPERTY TAXES

Delinquent Interest Chart
Taxes Paid 1st Half Full 2nd Half
March 1% – –
April 2% – –
May 3% 1% –
June 1-15 4% 2% –
June 16-30 4% 2% 1%
July 5% 3% 2%
August 6% 4% 3%
September – December Contact our office for amount due

Contact Us

Treasurer's Office

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

treasurer@bouldercounty.gov

eforeclosures@bouldercounty.gov

Mailing Address

PO Box 471
Boulder, CO 80306

Boulder

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

Connect With Us

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Longmont

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

Lafayette

1755 S. Public Road
Map and Directions Lafayette Location
Office closed until late January 2025