School-district share
$2,062
7.05% rate
Home & Property
Colorado Property Tax Estimator
Start with the home's value and the mill levies for its exact tax area. Colorado uses one 2026 calculation for school-district mills and another for the rest. This tool keeps those two pieces separate, just like the state does.
Estimator
Colorado property tax estimate
Enter the school mills and the rest of the mills separately. Colorado uses a different 2026 calculation for each part of a residential bill.
Other local share
$1,472
6.8% after the 2026 value adjustment
Estimated annual tax
$3,534
About $294 a month for escrow planning
This is a 2026 planning estimate. It assumes the value and both mill totals you entered are correct. It does not include every parcel-specific adjustment, fee, exemption, or future voter-approved change.
The tax year and payment year are different. A 2026 property-tax estimate is normally billed and paid in 2027. A bill paid during 2026 normally covers tax year 2025.
The local calculation uses 6.8% after a 10% reduction of the first $700,000 in actual value. The school calculation uses 7.05%. Colorado publishes both on its current assessment-rate page.
Confirm the official numbers with your county assessor or treasurer, the Colorado assessment-rate table, and the Colorado property tax map.
Use the real county record
Find the assessor and tax bill
Choose the property's county to open the official parcel record and treasurer page. Use those figures to replace the rough numbers in the estimator.
Not sure which county? Browse Colorado places.
The right office depends on the county.
Choose one to see the official links for the task in front of you.
A worked example
A $650,000 home at 82 mills
Say the assessor puts a home's actual value at $650,000. The example tax area has 45 school mills and 37 other mills, for 82 mills total. The calculator applies Colorado's two 2026 rules separately.
- School assessed value $45,825
- Other local assessed value $39,780
- Estimated annual tax $3,534
If the county approves the senior, veteran with a disability, or Gold Star exemption, the same estimate falls to about $2,965 a year. That is roughly $247 a month for escrow planning.
A real bill can differ because every parcel has its own value, districts, mills, adjustments, and exemption status. These numbers come from the same code as the estimator above.
The jargon, decoded
A few words before you run the numbers
These are the official terms you will see on notices, county websites, and tax bills.
TABOR
Colorado's Taxpayer's Bill of Rights. It is why voter approval, refunds, and local revenue limits show up in tax conversations.
TABOR does not make every bill low. It changes how governments ask for and keep revenue.
Mill levy
The property-tax rate. One mill is $1 per $1,000 of assessed value.
A 75-mill total levy means about $75 for each $1,000 of assessed value.
Special district
A local government layer for services such as fire, library, sanitation, parks, or infrastructure.
A subdivision can be inside several districts at once.
Metro district
A type of special district often used to finance infrastructure in newer development.
It can add a large mill levy even when the home is outside the city center.
How the Colorado formula works
Start with the actual value. That's the assessor's estimate of what the home is worth. Colorado turns that into a smaller number called the "assessed value." For 2026, school-district mills use a 7.05% assessment rate. Other local-government mills use a 6.8% rate after a 10% reduction of the first $700,000 in actual value. Multiply each assessed value by its mills, divide by 1,000, and add the two parts.
Colorado's Division of Property Taxation publishes the current rule on its assessment-rate page. Check that page and the parcel record before relying on a planning estimate.
The hard part is not the math. It's finding the right mills for your exact address. One address can sit inside many districts at once: county, school, city, fire, library, sanitation, and metro district. Each one adds its own mills.
The bill arrives after the tax year
Colorado property tax is paid in arrears, which means the bill comes after the year it covers. The 2026 value, rates, and mills produce a tax-year 2026 bill that is normally paid in 2027. This matters when you compare a new estimate with the seller's latest bill. That older bill may use a different value, tax year, assessment rule, or set of mills.
A sale does not create a simple tax reset
Colorado does not automatically replace the assessor's value with the purchase price and lock it there. Assessors revalue property on the statewide cycle. A recent sale can be useful market evidence, but the county's Notice of Valuation controls the value you can review or protest.
Why new subdivisions can feel expensive
Many newer Colorado neighborhoods use a metro district to pay for roads, utilities, landscaping, and parks. A metro district can add a higher mill levy than an older neighborhood nearby. That's true even when both homes share the same city name.
Why the bill can change even if you do nothing
Your bill can change from year to year on its own. The home's value can change. Voters can approve new mills or bonds. And the state can change the tax rules for a time. So build one simple habit: read your latest notice, check the county assessor's site, and look at the full list of taxing districts for that address.
Don't know your mills?
See all 64 counties ranked
Each county's typical (average) mill levy and the tax on a $500,000 home, from the Colorado Division of Property Taxation.
Weighing two places?
Compare two counties side by side
The mill levy and the yearly cost on an example home, for any two Colorado counties.
FAQ
Quick answers
Is the calculator a filed tax estimate from the county?
No. It is a planning tool. The county assessor and treasurer control actual value, assessed value, mill levies, exemptions, and the final bill.
What if I do not know the total mills?
Look up the parcel on the county assessor or treasurer site. Copy the actual value, the school-district mills, and all other mills. A county average is only a rough fallback because one address can sit in a very different tax area.
Do Colorado property taxes reset after a sale?
No. Colorado does not automatically lock the purchase price in as a new tax basis. County assessors value property on the statewide reappraisal cycle. A sale can be evidence of market value, but the assessor's notice, the current assessment rules, and the parcel's mill levies control the bill.
When is a 2026 Colorado property-tax estimate paid?
Colorado bills property tax after the tax year ends. Tax year 2026 is normally billed and paid in 2027. A property-tax bill paid during 2026 normally covers tax year 2025.
Sources and review
Where this information comes from
For current requirements, exceptions, forms, and deadlines, use the linked official source.
Data used: Colorado statewide guidance, 2026 residential assessment rates, and tax-year 2023 county-average mill levies Reviewed: July 2026 Colorado Division of Property Taxation Colorado Division of Property Taxation assessment rates Colorado Property Tax Entities and Mill Levies map
Use this carefully: Colorado property tax depends on the assessor's actual value, the current assessment rate, every overlapping taxing district, and any parcel-specific adjustments. Use this as a planning estimate, then confirm with the county assessor or treasurer.
Next steps
Keep going before you buy
Property tax is only one Colorado-specific check. These three usually belong next to it.
Districts
Metro district guide
Understand the extra district line that can reshape a new-build tax bill.
Read district guide ->Risk
Wildfire and insurance
Get insurance quotes and mitigation details before deadlines close.
Check wildfire issues ->Explore
See it for your county
Every Colorado county page has its own tax snapshot, mill levies, and local Porch Notes.
Browse counties ->