Colorado Paycheck Calculator
Colorado taxes wages at a flat 4.4% in 2026 — but only after its own deductions come off. Here is what actually reaches your account.
| Line | Per paycheck | Per year |
|---|---|---|
| Gross pay | — | — |
| Pre-tax deductions | ||
| 401(k) | — | — |
| Health premiums | — | — |
| Taxes withheld | ||
| Federal income tax | — | — |
| Social Security (6.2%) | — | — |
| Medicare (1.45%) | — | — |
| Additional Medicare (0.9%) | — | — |
| State income tax | — | — |
Quick reference
Colorado payroll tax at a glance, 2026
| State income tax rate | 4.4% flat |
| Standard deduction — single | $16,100 |
| Standard deduction — married filing jointly | $32,200 |
| Local or city income tax | A handful of cities charge a small flat occupational privilege tax. |
| Social Security wage base (federal) | $184,500 |
| Data last checked | 20 September 2026 |
| Verification | Confirmed with the state revenue department |
How Colorado's flat tax works
Colorado applies a single rate of 4.4% to taxable income. Flat does not mean the rate hits your salary directly — the state calculates taxable income its own way first.
The standard deduction is $16,100 for a single filer and $32,200 for a married couple filing jointly. Below that threshold Colorado takes nothing at all.
Because deductions come off before the rate applies, your effective state rate is always lower than 4.4%, and it rises gradually with income. The calculator above shows both figures.
Local income taxes
A handful of cities charge a small flat occupational privilege tax.
Local taxes are not included in the estimate above, because the rate depends on the exact city, county or district. Check your own stub for a line below the state tax.
How Colorado compares next door
On a $65,000 salary, single, with no pre-tax deductions:
- Arizona leaves you $929 better off a year on $65,000 — flat 2.5%.
- Kansas leaves you $676 worse off a year on $65,000 — graduated to 5.58%.
- Nebraska leaves you $74 better off a year on $65,000 — graduated to 4.55%.
- New Mexico leaves you $262 better off a year on $65,000 — graduated to 5.9%.
- Utah leaves you $225 better off a year on $65,000 — flat 4.45%.
Moving across a state line can be worth more than a pay rise — or cost more than one. These figures cover income tax only; sales tax, property tax and cost of living all move in the opposite direction in many cases.
Working across a state line
The general rule is that you owe tax where you physically do the work, and your home state credits you for it. If you live in Colorado and work elsewhere, or the reverse, you may have to file two state returns even though you are only taxed once on the same income. Where the two states have a reciprocity agreement, you can ask your employer to withhold for your home state only.
Compare
Neighbouring states
Same salary, different state. The gap across a state line is often larger than a pay rise.
Similar systems
Other flat-rate states
Transparency
How this page is calculated
The calculation
- Annualise gross pay from the amount and frequency entered.
- Subtract the traditional 401(k) contribution and pre-tax health premiums.
- Apply the 2026 federal brackets after the federal standard deduction.
- Calculate FICA on gross pay less health premiums — 401(k) contributions are not exempt from Social Security or Medicare.
- Apply Colorado's own deductions and exemptions, then its 2026 rates.
What is not included
Local and city income taxes; state disability and paid-family-leave contributions; garnishments and child support; the flat supplemental rate on bonuses; itemised deductions above the standard deduction; credits claimed on your annual return; and multi-state withholding if you live and work in different states.
Sources and verification
The 2026 rate and deductions on this page were confirmed directly against the Colorado revenue department on 20 September 2026. Federal figures come from the IRS 2026 inflation-adjusted tables and Publication 15-T; the Social Security wage base comes from the Social Security Administration.
- Colorado: tax.colorado.gov — the page we check against
- Federal: IRS 2026 inflation adjustments and Publication 15-T
- FICA: Social Security Administration 2026 contribution and benefit base
We re-read that source on a schedule — weekly through the March-to-June legislative season, monthly the rest of the year — and update this page when it moves. Five states changed their income tax part-way through 2026, so this is not a theoretical risk.
Found a figure that is wrong or out of date? Tell us — we correct it and note the change on the page.
Colorado paycheck questions
What is Colorado's income tax rate in 2026?
A flat 4.4% on taxable income, applied after Colorado's own deductions and exemptions.
How much is $50,000 after taxes in Colorado?
About $40,863 a year for a single filer with no pre-tax deductions — roughly $1,571.67 every two weeks. Adjust the calculator for your own 401(k) and premiums.
How much is $65,000 after taxes in Colorado?
About $52,256 a year for a single filer with no pre-tax deductions — roughly $2,009.84 every two weeks. Adjust the calculator for your own 401(k) and premiums.
How much is $100,000 after taxes in Colorado?
About $75,488 a year for a single filer with no pre-tax deductions — roughly $2,903.40 every two weeks. Adjust the calculator for your own 401(k) and premiums.
Does Colorado have a local or city income tax?
A handful of cities charge a small flat occupational privilege tax.
Why doesn't this match my pay stub exactly?
Usually a local tax, a state disability contribution, or a benefit deducted post-tax rather than pre-tax. Employers also use percentage-method withholding tables that round at each step.