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Updated 2025 Tax Year

Larimer County
Property Tax Guide

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

10 Official Sources
8 min read
Quick Facts
Tax Rate
13.98 mills county rate for 2025, total rates vary by district (typically 50-80+ mills combined)
Exemptions
4+ Available
Section 1

How Property Tax Works

Larimer County's property tax system funds essential local services including schools, county operations, fire protection, libraries, and various special districts. Property taxes are collected based on assessed values determined by the Larimer County Assessor and tax rates set by multiple taxing entities. The county itself receives less than a quarter of a typical property tax bill, with the majority going to school districts and other local services.

Property tax rates in Larimer County vary significantly by location due to the presence of different special taxing districts such as fire districts, library districts, park and recreation districts, and improvement districts. The county tax rate is 13.98 mills for 2025, with property tax revenue increasing by 2.4% in 2025. Total effective tax rates typically range from approximately 0.8% to 1.2% of assessed value depending on your specific location and the combination of special districts that serve your property.

Section 2

What Makes Up Your Tax Bill

ComponentRate (Mills)Description
County General13.98County operations, services, and administration
School DistrictsVariesK-12 education funding (varies by district)
Fire DistrictsVariesFire protection and emergency services
Library DistrictsVariesPublic library systems
Water DistrictsVariesWater and sanitation services
Park & RecreationVariesParks, recreation facilities, and programs
Other Special DistrictsVariesVarious local services and improvements

Rates shown are for levy year 2025. Your actual tax rate depends on which special taxing districts serve your property location. Contact the Larimer County Assessor at (970) 498-7050 for your specific district combination and total mill levy.

Section 3

When Are Property Taxes Due?

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

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 Larimer County are triggered by changes in property ownership, new construction, or significant improvements that increase a property's assessed value during the tax year. When these events occur, additional taxes are calculated based on the increased assessed value and the current tax rate, prorated for the remaining months in the tax year.

For example, if you purchase a home in July that was previously underassessed, or if you complete a major renovation that increases your home's value, you may receive a supplemental tax bill. The supplemental amount would be calculated as: (New Assessed Value - Previous Assessed Value) × Current Tax Rate × Remaining Months ÷ 12. This ensures that all properties pay their fair share of taxes based on current assessed values throughout the entire tax year.

Example Calculation

$300,000 Home (Assessed Value: $87,000)

  • Market Value: $300,000
  • Assessed Value (29% residential rate): $87,000
  • Less: Senior Homestead Exemption (if applicable): -$8,700
  • Net Taxable Value: $78,300
  • Annual Tax (assuming 1.0% effective rate): $783
  • Monthly Escrow: $65

$600,000 Home (Assessed Value: $174,000)

  • Market Value: $600,000
  • Assessed Value (29% residential rate): $174,000
  • Less: Disabled Veteran Exemption (if applicable): -$17,400
  • Net Taxable Value: $156,600
  • Annual Tax (assuming 1.1% effective rate): $1,723
  • Monthly Escrow: $144

$1,000,000 Home (Assessed Value: $290,000)

  • Market Value: $1,000,000
  • Assessed Value (29% residential rate): $290,000
  • Net Taxable Value: $290,000
  • Annual Tax (assuming 1.2% effective rate): $3,480
  • Monthly Escrow: $290

Note: All tax credits require application and approval. Rates vary by location due to special district variations.

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Section 5

Escrow & Property Taxes

Most mortgage lenders in Larimer County require borrowers to maintain an escrow account for property tax payments. Your lender collects monthly payments equal to approximately 1/12 of your annual property tax bill, holds these funds in escrow, and pays your taxes directly to the county when due. Lenders typically collect an additional 2-month cushion as allowed by federal law.

Property tax payments are due in two installments: first half by February 28, 2026, and second half by June 15, 2026, or full payment by April 30, 2026. Your lender will typically pay the full amount by the April 30 deadline to avoid splitting payments. You should receive an annual escrow analysis from your lender showing the account activity and any required payment adjustments. Always verify that your lender has made the payments on time by checking with the Larimer County Treasurer's office or reviewing your property tax account online.

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 for the current tax year? A: For 2026 property taxes, the first half is due February 28, 2026, the second half is due June 15, 2026, or you can pay the full amount by April 30, 2026. If the due date falls on a non-business day, payment is due the next business day.

Q: What tax credits are available and how do I apply? A: Available tax credits include the Senior Homestead Exemption, Disabled Veteran Exemption, and Gold Star Spouse Exemption. All require application through the Larimer County Assessor's office. These are not automatic and must be renewed as required. Call (970) 498-7050 for application forms and deadlines.

Q: How does the Homestead Exemption work? A: The Senior Homestead Exemption limits assessment increases rather than reducing market value. It caps the annual growth in assessed value and requires annual or periodic filing with the assessor's office. This helps protect seniors from large property tax increases due to rising home values.

Q: When are properties reassessed? A: Colorado law requires reassessment every two years for residential properties. The Larimer County Assessor conducts these revaluations based on market conditions and sales data. You'll receive a Notice of Valuation if your assessment changes.

Q: How do I appeal my property assessment? A: If you disagree with your assessed value, you can appeal to the Larimer County Board of Equalization. Appeals must be filed within 30 days of receiving your Notice of Valuation. Contact the assessor's office at (970) 498-7050 for appeal procedures and deadlines.

Q: What are the penalties for late payment? A: Late payments incur interest and penalties as specified by Colorado law. Interest begins accruing after the due date, and additional penalties may apply for significantly delinquent accounts. Contact the Larimer County Treasurer for specific penalty rates.

Q: Can I pay my property taxes online? A: Yes, Larimer County offers online payment options through their official website. You can pay by electronic check or credit card, though credit card payments may include processing fees. You can also pay in person, by mail, or through your mortgage escrow account.

Q: Why do property tax rates vary within Larimer County? A: Tax rates vary because different areas are served by different combinations of special districts (fire, library, parks, water, etc.). Each district sets its own mill levy, so your total rate depends on which districts serve your specific property location. The county portion remains consistent countywide.

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