Colorado / passenger vehicles
Colorado Vehicle Registration Fee Calculator
The line called a registration fee is the smallest part of a Colorado bill. On a new car it is about $9.00; the specific ownership tax beside it is roughly 90 percent of the illustrated subtotal.
Statutes read September 20, 2026 from Colorado Revised Statutes 2024, titles 42 and 43. Independent calculator, not a government service.
The calculation
From $597.50 to $60.00 on the same car
The table below holds one vehicle constant — a $30,000.00 car weighing 3,500 pounds — assumes an agency-confirmed $18 bridge charge and varies only its year of service. Everything except the ownership tax and the age fee stays fixed. [1]
| Year of service | Ownership tax | Everything else | Known subtotal |
|---|---|---|---|
| First year | $535.50 | $62.00 | $597.50 |
| Second year | $382.50 | $62.00 | $444.50 |
| Third year | $306.00 | $62.00 | $368.00 |
| Fourth year | $229.50 | $62.00 | $291.50 |
| Fifth through ninth year | $114.75 | $62.00 | $176.75 |
| Tenth and later years | $3.00 | $57.00 | $60.00 |
Worked example: that car has an illustrated subtotal of $597.50 in its first year, of which $535.50 is specific ownership tax, $9.00 is the weight-based registration fee, $23.00 is the road safety surcharge, $18.00 is the assumed agency-confirmed bridge safety surcharge and $12.00 is the age-based fee. By the tenth year the same car has an illustrated subtotal of $60.00.
The statutes
What C.R.S. §§42-3-107, 42-3-306, 43-4-804 and 43-4-805 say
Buying the car used does not lower the ownership tax. Section 42-3-107(9)(a) fixes the taxable value of Class C property at “eighty-five percent of the manufacturer’s suggested retail price.” That is the price when the vehicle was new, so it is a historical fact about the vehicle, not a reflection of what anyone paid for it or what it is worth now. Depreciation is expressed entirely through the rate table in subsection (10)(a), not through the value. Paying half price for a two-year-old car gets you the second-year rate, not a halved tax.
The rate falls fast, then falls off a cliff. Subsection (10)(a) charges 2.10 percent in the first year of service, 1.50 in the second, 1.20 in the third, .90 in the fourth, .45 for the fifth through ninth, and then a flat $3.00 from the tenth year onward. The step from the ninth year to the tenth takes the tax on our example car from $114.75 to $3.00. Unlike the Class A schedule in subsection (2), the Class C table has no $10.00 floor before that point.
Two dated provisions have already expired, and both raise the bill. Section 42-3-306(2)(b)(V) set the age-based fee at $9.00, $7.00 and $5.00 notwithstanding subsection (2)(b)(II), but subsection (2)(b)(VII) repeals (V) and (VI) “effective July 1, 2026”. From that date the (2)(b)(II) amounts of $12.00, $10.00 and $7.00 govern, and those are what this page uses. Separately, section 43-4-804(1)(a)(VIII) reduced every road safety surcharge by $11.10 — but only “for any registration period that begins on or after January 1, 2022, but before January 1, 2024.” That discount is gone, so the full $23.00 applies to a car in our example’s weight band.
The bridge surcharge is a ceiling, not a fixed amount. Section 43-4-805(5)(g)(I) authorises the bridge enterprise to impose the surcharge “as necessary for the achievement of its business purpose” and provides that the amount “must not exceed” $13.00, $18.00, $23.00, $29.00 or $32.00 by weight band. The road safety surcharge in section 43-4-804(1)(a)(I) is worded differently — “the amount of the surcharge is” — and is therefore fixed. The worksheet requires the actual assessed bridge amount. The example explicitly assumes $18; it does not establish what the bridge enterprise will assess on your notice.
The registration fee itself rounds up, and jumps at 4,500 pounds. Section 42-3-306(2)(b)(I) charges $6.00 up to 2,000 pounds, then $6.00 plus twenty cents per hundred pounds “or fraction thereof” to 4,500 pounds, then $12.50 plus sixty cents per hundred above that. Because a fraction of a hundred pounds counts as a whole one, a single pound over a boundary costs a full step. Crossing 4,500 pounds triples the marginal rate.
Read the text in the 2024 printout of title 42 and title 43.
Before you use the estimate
Why is my Colorado bill so much higher than the registration fee?
Because the registration fee is a small weight charge. The specific ownership tax under section 42-3-107(10)(a) is the dominant line, about 90 percent of a first-year bill on our example car. [1]
I bought the car cheaply. Does that help?
No. Taxable value is 85 percent of the original manufacturer’s suggested retail price under section 42-3-107(9)(a). What you paid does not enter the calculation.
What counts as my year of service?
How many registration years the vehicle has been in service, counting the first as one. The tenth and each later year is the flat $3.00 rate.
Could my actual bill be a little lower than this?
The illustrated bridge amount is an assumed confirmed $18. Your actual assessment and other charges can differ; enter the amount on your notice rather than treating the statutory cap as the charge.
What is not included?
County and authorized-agent charges, additional fees for plug-in electric vehicles, and sales or use tax and title charges on a purchase. They are listed as unresolved rather than estimated.
A bridge ceiling is not an assessed fee
Section 43-4-805 authorizes bridge safety surcharges up to weight-band maximums of $13, $18, $23, $29 or $32. The enterprise may impose a smaller amount. Enter the actual bridge line from the notice; the tool checks that it does not exceed the statutory band maximum. Leaving it blank keeps that line unresolved rather than adding a maximum as though it were the amount owed.
Updated · Published by DMV Fee Calculator Editorial Team.