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Updated 2025 Tax Year

Routt County
Property Tax Guide

Everything you need to know about property taxes in Routt County, CO. Rates, due dates, exemptions, and how it affects your monthly payment.

10 Official Sources
8 min read
Quick Facts
Tax Rate
Varies by location, typically 0.6% to 1.2% of assessed value depending on special districts
1st Due
Feb 28
2nd Due
Jun 15
Exemptions
4+ Available
Section 1

How Property Tax Works

Routt County, Colorado operates under a property tax system that funds essential local services including schools, fire protection, libraries, and county operations. Property taxes are calculated based on assessed value, which is a percentage of actual market value, multiplied by the total mill levy rate for your specific area. The county follows Colorado's TABOR (Taxpayer's Bill of Rights) revenue limitations, with property tax increases generally capped at 3% to 4% annually.

Effective tax rates in Routt County vary significantly by location within the county due to different combinations of special taxing districts. These districts may include school districts, fire protection districts, library districts, recreation districts, and other local improvement districts. Property owners should expect their actual tax rate to differ based on which services and districts apply to their specific property location. The county provides detailed mill levy information for each tax area to help property owners understand their specific tax burden.

Section 2

What Makes Up Your Tax Bill

ComponentRate RangeDescription
County General3.5-4.2 millsBasic county services and operations
School Districts25-35 millsK-12 education funding, varies by district
Fire Protection2-8 millsFire and emergency services, varies by district
Library District1-2 millsBud Werner Memorial Library services
Recreation Districts1-5 millsParks and recreation, varies by district
Special Assessments0-10 millsWater, sewer, improvements as applicable
Total Range32-64 millsVaries significantly by location

Rates shown are for FY 2025-2026 levy year. Actual rates depend on your property's specific tax area and applicable special districts. One mill equals $1 per $1,000 of assessed value.

Section 3

When Are Property Taxes Due?

For the 2025/2026 tax year in Routt County, property taxes are due in two installments:

First Installment
Feb 28
Delinquent after Dec 10
Second Installment
Jun 15
Delinquent after Apr 10
Pro tip: If you pay through mortgage escrow, your lender splits these payments across your monthly mortgage. If you pay directly, set calendar reminders to avoid late penalties.
Section 4

Supplemental Tax Bills

Supplemental taxes in Routt County are triggered when property undergoes significant changes in ownership or value during the tax year. The most common triggers include new construction completion, major renovations that increase property value, or ownership transfers that prompt reassessment. When these events occur, the county assessor calculates the difference between the original assessed value and the new assessed value, then applies the current mill levy rate to determine additional taxes owed.

For example, if you complete a $100,000 home addition mid-year, and the residential assessment rate is 6.95%, your additional assessed value would be $6,950. With a total mill levy of 50 mills, you would owe approximately $348 in supplemental taxes ($6,950 × 0.050) for the remaining portion of the tax year. Supplemental tax bills are typically issued within 60-90 days of the triggering event and have separate due dates from regular property tax payments.

Example Calculation

Example 1: $300,000 Home

  • Market Value: $300,000
  • Assessed Value (6.95%): $20,850
  • Senior Homestead Credit (if applicable): -$6,950
  • Net Taxable Value: $13,900
  • Annual Tax (45 mills): $626
  • Monthly Escrow: $52

Example 2: $600,000 Home

  • Market Value: $600,000
  • Assessed Value (6.95%): $41,700
  • Homestead Credit (if applicable): -$6,950
  • Net Taxable Value: $34,750
  • Annual Tax (48 mills): $1,668
  • Monthly Escrow: $139

Example 3: $1,000,000 Home

  • Market Value: $1,000,000
  • Assessed Value (6.95%): $69,500
  • Homestead Credit (if applicable): -$6,950
  • Net Taxable Value: $62,550
  • Annual Tax (52 mills): $3,253
  • Monthly Escrow: $271

Examples use estimated mill levies. Actual rates vary by location. Credits shown require application and qualification. Contact the County Assessor for specific credit eligibility.

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Section 5

Escrow & Property Taxes

Most mortgage lenders in Routt County require borrowers to maintain an escrow account for property tax payments, especially for loans with less than 20% down payment. Your lender collects monthly escrow payments along with your mortgage payment, then pays your property taxes directly to the county when due. The lender typically collects 1/12th of your estimated annual property tax bill each month, plus a small cushion to account for potential increases.

Lenders are required to provide an annual escrow analysis statement showing your account activity and any adjustments needed for the coming year. If property taxes increase significantly due to reassessment or mill levy changes, your monthly escrow payment may increase accordingly. Property owners should verify that their lender pays taxes on time, as you remain ultimately responsible for ensuring payments are made. You can check payment status through the Routt County Treasurer's online portal using your property account number.

How HonestCasa Helps
  • Understand whether your escrow is set correctly
  • See how rising taxes will change your monthly payment
  • Plan ahead instead of being surprised by "shortage" letters
Section 6

Frequently Asked Questions

Q: When are property taxes due in Routt County for 2025? A: First half payment is due February 28, 2025. You can pay the full year by April 30, 2025, or pay the second half by June 15, 2025. Late payments incur penalties and interest charges.

Q: What homestead tax credits are available and do they apply automatically? A: The Senior Homestead Credit provides 50% exemption on the first $200,000 of actual value for qualifying seniors. This credit requires annual application and is NOT automatic. Contact the County Assessor's office for application forms and deadlines.

Q: How does the Homestead Credit work - does it reduce my home's value? A: The Homestead Credit limits assessment increases rather than reducing market value. It caps annual assessment growth and requires filing an application. The credit applies to your primary residence only and must be renewed periodically.

Q: When does Routt County reassess properties? A: Colorado requires county-wide reassessment every two years. Routt County follows the state schedule with the most recent reassessment effective for tax year 2025. Property owners receive new assessment notices and have appeal rights during designated periods.

Q: What are the penalties for late property tax payments? A: Late payments incur a 1% penalty per month, plus interest charges. After three years of non-payment, properties may be subject to tax lien sale. Pay promptly to avoid additional costs.

Q: Can I pay property taxes online? A: Yes, but online payment systems are temporarily unavailable from September through November 2025 due to system updates. During available periods, you can pay through the County Treasurer's website using bank transfer or credit card (fees apply).

Q: Why did my property taxes increase significantly? A: Increases typically result from reassessment reflecting market value changes, new mill levies approved by voters, or changes in special district boundaries. Review your assessment notice and mill levy breakdown for specific details.

Q: How do special districts affect my property tax bill? A: Special districts provide specific services like fire protection, libraries, or recreation facilities. Your property's location determines which districts apply. Each district sets its own mill levy, contributing to your total tax rate. District boundaries and rates vary throughout Routt County.

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