How Much Can You Save by Appealing Your Colorado Property Taxes? (Real Numbers)
A plain-math breakdown of what a Colorado property tax appeal is actually worth — how a lower assessed value turns into dollars off your bill, every year, for the whole two-year cycle.
The honest answer is: it depends on how overvalued your home is and your local mill levy — but the math is simple, and the numbers are bigger than most people expect because the savings repeat every year. Here's exactly how to estimate your own.
The formula that decides your bill
In Colorado your tax is: actual value × assessment rate × mill levy. The residential assessment rate is about 6.75%, and the mill levy is set by your local taxing districts (commonly 70–90 mills, i.e. 0.070–0.090). So a $700,000 home at 80 mills pays roughly $700,000 × 0.0675 × 0.080 ≈ $3,780 a year. An appeal doesn't touch the assessment rate or the mill levy — it lowers the actual value, and everything downstream falls with it. See how the calculation works in detail.
What a reduction is worth
Every $10,000 you knock off your actual value saves about $10,000 × 0.0675 × your mill levy per year. At 80 mills that's about $54 a year for each $10,000 — so a $60,000 reduction is roughly $324 a year. That doesn't sound dramatic until you remember two things: reductions are usually a percentage of value, and the savings recur.
| Home actual value | 10% reduction | Approx. annual savings* | Two-year cycle |
|---|---|---|---|
| $500,000 | $50,000 | $270 | $540 |
| $750,000 | $75,000 | $405 | $810 |
| $1,000,000 | $100,000 | $540 | $1,080 |
| $1,500,000 | $150,000 | $810 | $1,620 |
*Assumes a ~80-mill levy and the 6.75% residential assessment rate. Your county's mill levy may be higher or lower — higher mills mean bigger savings from the same reduction.
How big are typical reductions?
It varies by county and by how thin the comp pool was when the assessor valued your block, but successful residential appeals commonly land in the 5–15% range, and condition- or record-error cases can go higher. The two ingredients are the size of the over-valuation and the strength of your evidence — our evidence guide covers what actually moves the number.
Find your real number
Rather than guess, pull your county's actual recorded value and mill levy and run the math on your specific home. Enter your address and we'll show your assessor's value, your tax history, and an honest savings estimate in about a minute — and if you don't have a case, we'll tell you. There's no upfront fee; we only get paid if your taxes actually drop.
Is your home overassessed? Find out free.
We pull your county's actual records, show your tax history, and estimate your savings — no upfront fees, ever.