Colorado income tax calculator
An effective rate of 3.46%, with 4.4% on the next dollar. That is the 25th-largest state income tax bill on $75,000 of the 51 jurisdictions.
- Top rate
- 4.4%
- Rate on your last dollar
- 4.4%
- State taxable income
- $58,900
- Effective rate
- 3.46%
Colorado taxes every dollar of state taxable income at a single rate of 4.4% — the 30th-highest top rate of the 51 jurisdictions. A single filer subtracts a $16,100 standard deduction before the rates are applied. Because the rate itself never changes, the effective rate moves only as those fixed dollar amounts shrink against a bigger salary — 2.63% on $40,000, rising to 3.93% on $150,000.
Colorado 2025 tax rate
One rate, applied to state taxable income after the deductions below.
Single · Married filing jointly · Head of household
| State taxable income | Rate |
|---|---|
| All state taxable income | 4.4% |
Colorado deductions and exemptions
| Amount | Single | Married filing jointly | Head of household |
|---|---|---|---|
| Standard deduction | $16,100 | $32,200 | $24,150 |
Work out your own Colorado tax
Already set to Colorado and the 2026 federal schedule. Change the income, the filing status or the year and everything below updates.
Wages, interest, business income, etc. Exclude pre-tax 401(k) and HSA contributions.
Adds state income tax using that state's own rate schedule and standard deduction. Pick the last option to type a flat rate instead.
- Effective federal tax rate
- 10.23%Federal tax as a share of the income you entered.
- Marginal bracket
- 22%The rate on your next dollar of taxable income.
- State income tax
- $2,591.60From the selected state's rate schedule, or your flat rate.
- Federal + state income tax
- $10,261.60
- Income after income tax
- $64,738.40
- Taxable income
- $58,900.00
- Deduction applied
- $16,100.00
Assumptions
- Ordinary-income rate schedules only; no credits, AMT, capital-gains rates, QBI deduction or the 2025–2028 senior deduction.
- Standard deduction (plus additional amounts for 65+/blind) or your itemized figure, whichever is larger; no dependent-filer limitation.
- Married filing separately uses half the joint federal thresholds, per the IRS schedule, and the state's single-filer schedule.
- State tax uses each state's published rate schedule, standard deduction and personal exemption for the tax year shown with the results; the source URL and year for the state you pick are printed above the results, along with the simplifications made for that state.
- State figures exclude county, municipal and city income taxes, itemized deductions, retirement and capital-gains exclusions, and credits that phase out. Unlisted states fall back to the flat rate you enter.
| Taxable income | Rate | Your income in this bracket | Tax |
|---|---|---|---|
| $0 – $12,400 | 10% | $12,400 | $1,240 |
| $12,400 – $50,400 | 12% | $38,000 | $4,560 |
| $50,400 – $105,700 | 22% | $8,500 | $1,870 |
| $105,700 – $201,775 | 24% | $0 | $0 |
| $201,775 – $256,225 | 32% | $0 | $0 |
| $256,225 – $640,600 | 35% | $0 | $0 |
| Over $640,600 | 37% | $0 | $0 |
Colorado income tax at other incomes
| Gross income | Single | Effective | Married jointly | Effective |
|---|---|---|---|---|
| $30,000 | $612 | 2.04% | $0 | 0.00% |
| $50,000 | $1,492 | 2.98% | $783 | 1.57% |
| $75,000 | $2,592 | 3.46% | $1,883 | 2.51% |
| $100,000 | $3,692 | 3.69% | $2,983 | 2.98% |
| $150,000 | $5,892 | 3.93% | $5,183 | 3.46% |
| $250,000 | $10,292 | 4.12% | $9,583 | 3.83% |
State income tax only, filing status as shown, after Colorado’s own deductions. Federal tax is on top of every figure here.
How the neighbours compare
Colorado borders 7 other jurisdictions. Moving across a state line is the one way most people can actually change which of these schedules applies to them, so here is the same income run through each of them.
| State | Rate structure | $50,000 | $75,000 | $150,000 |
|---|---|---|---|---|
| Colorado | Flat 4.4% | $1,492 | $2,592 | $5,892 |
| Arizona | Flat 2.5% | $856 | $1,481 | $3,356 |
| Kansas | 5.2% – 5.58% | $1,990 | $3,385 | $7,570 |
| Nebraska | 2.46% – 4.55% | $1,395 | $2,533 | $5,945 |
| New Mexico | 1.5% – 5.9% | $1,201 | $2,376 | $6,036 |
| Oklahoma | 0.25% – 4.75% | $1,837 | $3,025 | $6,587 |
| Utah | Flat 4.5% | $1,718 | $3,168 | $6,750 |
| Wyoming | No income tax | $0 | $0 | $0 |
State income tax on a single filer, after each state’s own deductions. Federal tax is identical wherever you live, so the difference between these rows is the whole difference.
What these Colorado figures leave out
Recorded against Colorado in the data rather than glossed over, because they change real bills.
- Colorado starts from federal taxable income, so the deduction applied is the federal one. The standard deduction is the federal amount this state adopts: $16,100 single, $32,200 married filing jointly, $24,150 head of household for 2026 (IRS Rev. Proc. 2025-32 §4.14).
- Colorado's published rate table stops at tax year 2025; the 2026 rate had not been posted when this was compiled.
- Filers with federal AGI above $300,000 must add back part of their federal deduction, and Colorado levies its own alternative minimum tax. Neither is modelled.
Frequently asked questions
▸Does Colorado have a state income tax?
Yes. Colorado taxes state taxable income at a flat 4.4%, whatever you earn and whichever status you file under.
▸How much state income tax would I pay on $75,000 in Colorado?
About $2,592 for a single filer — an effective rate of 3.46%. That is $75,000 less $16,100 of state deductions, leaving $58,900 of taxable income taxed at 4.4% at the margin.
▸What is the top income tax rate in Colorado?
4.4% — there is only one rate, which makes it the 30th-highest top rate among the 50 states and the District of Columbia.
▸What is the Colorado standard deduction?
$16,100 for a single filer and $32,200 for a couple filing jointly, for tax year 2025.
▸Are these Colorado figures up to date?
They are the tax year 2025 figures, taken from Colorado Department of Revenue — Individual Income Tax Guide and last checked on 2026-09-09. Colorado had not published a 2026 schedule when this was compiled, so the 2025 one is shown rather than an estimate.
Source
Colorado Department of Revenue — Individual Income Tax Guide
Tax year 2025 figures — Colorado had not published a 2026 schedule when this page was compiled, so the 2025 one is used rather than an estimate. Last checked against the source on 2026-09-09.
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Colorado income tax calculator: Colorado income tax on $75,000, filing single is $2,592. Source: https://www.calculateitnow.dev/colorado-income-tax-calculator