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 2025

Feb. 28
June 16

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.”

Delinquent Interest Chart
Taxes Paid	1st Half	Full	2nd Half
March	1%	–	–
April	2%	–	–
May	3%	1%	–
June 1-16	4%	2%	–
June 17-30	4%	2%	1%
July	5%	3%	2%
August	6%	4%	3%
September – December	Contact our office for amount due

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

PO Box 471
Boulder, CO 80306

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

On Facebook:

515 Coffman St.
Suite 113
Hours: 8 a.m. to 4:30 p.m.
Mondays only

1755 S. Public Road

Hours: 8 a.m. to 4:30 p.m.
Tuesdays Only
Open through Aug 26, 2025