Colorado Mortgage Calculator
Colorado taxes homes on a specially reduced assessment rate, one of the lowest in the country — pick your county below to see your real payment.
Loan & Property Details
Auto-fills from the county selected above; edit if you know your exact mill levy district.
Your Estimated Monthly Payment
Choose a county and enter your details to see a plain-language read on your payment.
What If You Paid Extra Toward Principal?
Slide to test an extra monthly payment and see how many years and how much interest it saves.
What If Your Rate Changes?
Your 5-Year Equity Snapshot
Good to Know: No Statewide Transfer Tax — Except in the Mountains
Denver, El Paso, Arapahoe, and Jefferson counties charge no transfer tax at all. A handful of Colorado’s mountain resort towns are a notable, grandfathered exception.
| Statewide real estate transfer tax | None, for most of Colorado |
| Exception | A small number of home-rule resort towns with charters predating a 1992 statewide ban |
| Example: Aspen (Pitkin County) | Up to 1.5%, funding affordable housing |
| Example: Telluride (San Miguel County) | Up to 3%, among the highest in the country |
| Denver, El Paso, Arapahoe, Jefferson | No local transfer tax |
Why Colorado’s Property Tax Math Doesn’t Match the Sticker Price
Colorado runs one of the most unusual property tax systems in the country, a legacy of the 1982 Gallagher Amendment and the state’s Taxpayer’s Bill of Rights, both of which have pushed lawmakers to repeatedly adjust how much of a home’s value actually gets taxed. Instead of a flat percentage of price, Colorado applies a specially reduced residential assessment rate, currently split between a lower rate for local government levies and a slightly higher rate for school district levies, with an additional flat-dollar reduction subtracted from value before the local government rate applies. The net effect: Colorado’s effective property tax rates rank among the lowest of any state, even in fast-growing Front Range counties.
Denver, El Paso, Arapahoe, and Jefferson: how the four biggest markets compare
Denver County, coterminous with the city itself, runs a moderate effective rate on some of the state’s highest home values, producing one of the larger dollar tax bills along the Front Range even though the rate itself isn’t the state’s highest. El Paso County, anchored by Colorado Springs, runs a lower effective rate and meaningfully lower home prices, keeping typical bills well under Denver’s. Arapahoe County, covering Aurora and Centennial, posts the highest effective rate of these four. Jefferson County, the Denver suburbs of Lakewood, Golden, and Arvada, sits close to the state average. Switching counties above resets both price and rate defaults to match.
| Home actual value | $600,000 |
| 2026 local government residential rate | 6.8%, after a 10% reduction on the first $700,000 of value |
| 2026 school district residential rate | 7.05%, no reduction |
| Illustrative combined mill levy example | ≈ 85 mills |
| Illustrative annual tax | ≈ $2,700–$2,900* |
*Illustrative assessment-rate math only, shown for context. The live calculator above uses each county’s actual effective rate — tax bill as a percentage of full market value, as published by county assessors and sources like SmartAsset — applied directly to your home price, which is the more reliable way to estimate a real bill.
The Senior Homestead Exemption most eligible Coloradans never file for
Colorado’s Senior Homestead Exemption exempts 50% of the first $200,000 of a home’s actual value from taxation, worth up to $100,000 off the taxable value, for owners 65 or older who have owned and occupied the home as their primary residence for at least ten consecutive years. A parallel exemption offers the same benefit to veterans with a 100% permanent service-connected disability rating, without the ten-year requirement. Neither is automatic; both require a one-time application with the county assessor. The toggle above applies this exemption directly to your taxable value, since it’s one of the largest reductions available to any Colorado homeowner.
TABOR, Gallagher’s legacy, and why the assessment rate keeps changing
Colorado voters repealed the Gallagher Amendment in 2020, but its goal, keeping the residential share of the state’s total property tax base roughly stable as home values outpace commercial values, still shapes policy. Since then, a wave of ballot measures and legislative special sessions, including bills passed in 2023 and 2024, have repeatedly adjusted the residential assessment rate and added temporary value reductions to offset fast-rising home prices under the constraints of TABOR, which limits how much government revenue can grow year over year. Practically, this means Colorado’s assessment rate is genuinely a moving target from one legislative session to the next, more so than in almost any other state, and today’s calculator defaults should be revisited if you’re planning multiple years out.
No transfer tax almost everywhere, with a real exception in the mountains
Colorado banned new local real estate transfer taxes statewide in 1992, and Denver, El Paso, Arapahoe, and Jefferson counties charge none today. But a small number of mountain resort towns, including Aspen, Vail, Telluride, Breckenridge, and Crested Butte, operate real estate transfer taxes under home-rule charters that predate the 1992 ban and were grandfathered in, some running as high as 3% and funding local affordable housing programs. If you’re buying along the Front Range, this won’t affect you; if you’re eyeing a mountain property, it’s a real cost to budget.
Common Mistakes Colorado Buyers Make With the Numbers
- Applying a national average property tax rate. Colorado’s reduced assessment rate keeps effective rates well below the national median in nearly every county.
- Forgetting to file for the Senior Homestead Exemption. It isn’t automatic and requires a one-time application with the county assessor once eligible.
- Assuming the assessment rate this year will hold for years. Colorado’s rate has changed via legislation multiple times in recent years and may change again.
- Assuming Colorado has no transfer tax anywhere. It’s true for most of the state, but not in several well-known mountain resort towns.
- Not budgeting for hail and wildfire-related insurance costs. Front Range hail and Western Slope wildfire exposure have pushed Colorado insurance premiums up faster than many buyers expect.
Tips for Lowering Your Colorado Mortgage Payment
- If a borrower on title is 65 or older with ten years in the home, or a 100% disabled veteran, file for the Senior Homestead Exemption as soon as you’re eligible.
- Compare effective tax rates across county lines, not just home prices, before settling on a target area along the Front Range.
- Get a firm homeowners insurance quote before waiving your inspection period, given how much hail and wildfire exposure can move premiums by specific address.
- Compare rate quotes from at least three lenders active specifically in the Denver and Colorado Springs markets, since local pricing can differ from national averages.
- Use the extra-payment scenario above; even a modest additional principal payment compounds meaningfully over a 30-year Colorado loan.
Frequently Asked Questions
How is property tax calculated in Colorado?
Colorado applies a reduced residential assessment rate, split between local government and school district levies, to a home’s actual value, then applies the local mill levy to that smaller assessed value.
How much is property tax in Colorado?
Colorado’s statewide effective property tax rate is among the lowest in the country. Among major Front Range counties, Arapahoe and Jefferson run somewhat higher effective rates than El Paso and Denver.
What is Colorado’s Senior Homestead Exemption?
An exemption of 50% of the first $200,000 of a home’s actual value, for owners 65 or older who have owned and occupied the home for at least ten consecutive years, worth up to $100,000 off taxable value.
Do disabled veterans get a property tax break in Colorado?
Yes, veterans with a 100% permanent service-connected disability rating qualify for the same homestead exemption as seniors, without the ten-year ownership requirement.
Does Colorado have a real estate transfer tax?
No, not in most of the state; Colorado banned new local transfer taxes in 1992. A handful of mountain resort towns, including Aspen, Vail, and Telluride, operate grandfathered transfer taxes under older home-rule charters.
Why does Colorado’s residential assessment rate keep changing?
Following the 2020 repeal of the Gallagher Amendment, the legislature has repeatedly adjusted the assessment rate through ballot measures and special sessions to offset rapidly rising home values within TABOR’s revenue growth limits.
Which Colorado county has the lowest property tax rate?
Among the state’s largest Front Range counties, El Paso and Denver generally run lower effective rates than Arapahoe, though many mountain and rural counties run lower rates still.
What down payment do I need to buy a home in Colorado?
Conventional loans often start around 5% down, FHA loans typically require 3.5%, and VA loans can allow 0% down for eligible veterans, common given Colorado’s significant military population.
When can I remove PMI on a Colorado home loan?
Federal law allows requesting PMI removal at 20% equity, with automatic lender cancellation at 22% equity based on the original amortization schedule.
Does this calculator include closing costs?
No, this tool estimates the ongoing monthly payment only. Colorado closing costs typically add a few percent of the purchase price, generally without a transfer tax added on top outside a handful of resort towns.
References
- Colorado Department of Local Affairs, Division of Property Taxation, residential assessment rate guidance – dpt.colorado.gov
- Denver, El Paso, Arapahoe, and Jefferson County Assessor offices, mill levies and Senior Homestead Exemption applications – county government sites
- Colorado Department of Revenue, real estate transfer tax history and home-rule exceptions
- Freddie Mac Primary Mortgage Market Survey, weekly national rate averages – freddiemac.com/pmms
Related DexoCalc Tools
This Colorado mortgage calculator is part of the Mortgage Calculators cluster I am building out on DexoCalc. Start with the national Mortgage Calculator to compare Colorado against any other state, see another low-effective-rate assessment system out west in the Arizona Mortgage Calculator, compare Colorado’s mountain-town transfer tax exception against another no-income-tax state in the Washington Mortgage Calculator, or see a state with an even simpler flat homestead credit in the Arkansas Mortgage Calculator. Browse every state-specific tool as new ones publish on the full Mortgage Calculators hub.
This calculator provides estimates for educational purposes only and is not a loan offer, pre-approval, or substitute for advice from a licensed Colorado mortgage professional or tax advisor. Property tax, exemption, and assessment rate figures are approximations that vary by county and change with legislation; confirm exact figures with your county assessor. Sources: Colorado DOLA, county assessor offices, Freddie Mac.