Senior Deferral Information

We have discontinued online payment for the year and now require payment in certified funds. Payment can be made by mail or in our office with cash (office only), cashier’s check, or money order.

Our Lafayette office is now closed for the year. It will open again in late January, after tax notices have been mailed out. Please contact our office at 303-441-3520 with any questions.

Senior Deferral Information

The Treasurer’s Office is no longer processing applications for tax deferrals. The State Treasurer has taken over the program and will be managing it starting in 2023 for taxes payable that year. We don’t yet have contact information for the new program office, but will provide it here as soon as we do.

What is the senior tax deferral program?

The senior tax deferral program is offered by the State of Colorado. It allows you to postpone tax payments on your primary residence until you sell your property, or your estate is settled after your death. Interest is applied to the amount you defer. Each year, you can defer either the whole amount of your taxes, or half your taxes.

In the past, this program was managed jointly between the County and State Treasurer’s Offices. Beginning in 2023, the State Treasurer will run all aspects of the program, including the deferral application process.

We do not yet have contact information for the State Treasurer’s program, but we will provide it here as soon as we do.

General requirements

  • You must be 65 years old on or before January 1 of this year
  • You cannot be earning income from the property (e.g., renting the property), but you can have a home office
  • If your property is in a trust you must be named the trustee and the beneficiary of the trust
  • If you have a reverse mortgage you likely cannot receive tax deferral (your lender must agree to subordinate)

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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Hours: 8 a.m. - 4:30 p.m.
Mondays Only


1376 Miners Dr.
Unit 105
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Office closed until next January