Rate Breakdown

Property taxes in Delta County are calculated by multiplying the assessed value (minus exemptions) by the total local millage rate.

How Property Tax Works in Delta County

Property tax in Delta County is calculated by multiplying the assessed value of a parcel by the applicable millage rate. The County Assessor determines the assessed value each year by analyzing recent sales, property improvements, and market trends. Once the value is set, the Delta County Treasurer’s Office applies the combined millage rates of the county, school district, city or town, fire protection, and any special districts that serve the property. One mill equals one‑tenth of one percent (0.001) of the assessed value; for example, a 20‑mill rate on a home assessed at $200,000 results in a tax bill of $4,000. Millage rates can change annually, so the total tax bill may fluctuate even if the assessed value remains stable.

Available Exemptions

Colorado law provides several exemptions that can lower your taxable base. Eligibility is determined by the state and administered locally. The most common exemptions in Delta County include:

• Homestead exemption – Reduces the taxable value of a primary residence by $200,000 (or the full market value, whichever is lower) for property‑tax purposes.
• Senior citizen exemption – Homeowners age 65 or older may qualify for an additional 10 % reduction of the assessed value, provided the household income does not exceed the state‑defined limit.
• Disability exemption – Qualified persons with a permanent disability may receive the same 10 % reduction as seniors, again subject to income qualifications.
• Veteran exemption – Disabled veterans (or surviving spouses) can obtain a reduction ranging from 10 % to 100 % of the assessed value, depending on the degree of service‑connected disability.

All exemptions must be applied for through the Delta County Assessor’s Office, typically by March 1 of the tax year. Documentation such as proof of age, income, disability status, or military service is required.

Payment Schedule & Deadlines

Delta County property taxes are due in two installments. The first installment is payable on the first business day of October; the second installment is due on the first business day of April. Each installment represents half of the total tax bill, unless you have arranged a different payment plan with the Treasurer’s Office.

• Pay online through the County’s secure portal, by mail, or in‑person at the Treasurer’s Office.
• If you miss a deadline, a 5 % penalty plus interest accrues on the unpaid balance.
• Delinquent accounts are subject to a lien, possible tax‑sale proceedings, and may affect your credit rating.
• Installment agreements for monthly or quarterly payments are available for homeowners experiencing cash‑flow challenges, but must be approved before the first due date.

Appealing Your Assessment

If you believe your property has been over‑assessed, you have the right to appeal. The process begins with a formal protest filed with the Delta County Board of Assessment Appeals (BAA).

• File the protest on or before the deadline listed on your assessment notice, typically within 30 days of receipt.
• Provide supporting evidence such as recent comparable sales, an independent appraisal, or documentation of unpermitted improvements.
• The BAA will schedule a hearing where you may present your case; a written decision follows the meeting.
• If the BAA’s decision is unfavorable, you may appeal to the Colorado Board of Equalization and, subsequently, to the state district court.