This Colorado paycheck calculator 2026 shows your CO take-home pay under Colorado's flat 4.40% state income tax. Colorado is unusual in that it starts from your federal taxable income, so it effectively uses the federal standard deduction before applying its single rate. Combined with federal income tax and FICA, this Colorado net pay calculator makes your take-home easy to estimate. Enter your gross pay below to see your CO paycheck for 2026 with a full deduction breakdown for hourly or salary workers.
Colorado applies a single flat income-tax rate of 4.40%, but unlike most flat-tax states it begins from your federal taxable income — meaning the federal standard deduction is already baked in. This Colorado paycheck calculator annualizes your pay, subtracts the federal standard deduction ($16,100 single / $32,200 joint) to approximate Colorado taxable income, applies the flat 4.40%, then layers on 2026 federal income tax and the 7.65% FICA tax, dividing back to your pay frequency.
| Deduction | Rate / basis (2026) | On $70,000 salary |
|---|---|---|
| CO state income tax | 4.40% flat (on federal taxable income) | $2,372 |
| Federal income tax (single) | 2026 brackets | $6,570 |
| FICA | 7.65% | $5,355 |
| Net take-home | $55,703 |
A single Coloradan earning $70,000 takes home about $55,703 a year, or roughly $2,142 per biweekly paycheck — an effective tax rate near 20.4%.
Colorado uses a flat 4.40% individual income tax for 2026, applied to Colorado taxable income. Because the rate is flat, every Colorado worker pays 4.40% on taxable income regardless of total earnings. Colorado's unusual feature is that it starts from federal taxable income, so the generous federal standard deduction flows through — which is why Colorado's effective rate on gross wages is lower than the headline 4.40% suggests. The table below compares Colorado to other flat-tax states.
| State | Flat income-tax rate (2026) |
|---|---|
| Arizona | 2.5% |
| North Carolina | 3.99% |
| Colorado | 4.40% |
| Georgia | 5.19% |
Colorado is one of a handful of states (with Idaho, Iowa, Montana, New Mexico, North Dakota, and South Carolina) that includes the federal standard deduction in its income starting point. For 2026 that is $16,100 single / $32,200 joint. This means Colorado does not have its own separate standard deduction figure; it inherits the federal one. The calculator approximates Colorado taxable income by subtracting the federal standard deduction from gross wages before applying the 4.40% rate.
Hourly workers can switch the pay type to "Hourly" and enter their rate and weekly hours. The calculator annualizes (rate × hours × 52), applies the flat CO tax plus federal and FICA, and divides back to your pay frequency. A $25/hour full-time worker ($52,000/year) nets roughly $42,400 a year in Colorado after all taxes.
Federal income tax uses the 2026 brackets and the $16,100 single / $32,200 joint standard deduction. FICA is the standard 7.65% — 6.2% Social Security up to the $184,500 wage base, plus 1.45% Medicare with no cap (and 0.9% additional Medicare on wages over $200,000). These apply identically in every state; the CO 4.40% flat tax is the Colorado-specific line.
| Annual salary | Approx. CO net (single) | Per biweekly check |
|---|---|---|
| $50,000 | ~$40,800 | ~$1,569 |
| $70,000 | ~$55,703 | ~$2,142 |
| $90,000 | ~$68,900 | ~$2,650 |
| $120,000 | ~$88,700 | ~$3,411 |
Figures assume the single federal standard deduction as the Colorado starting point, the 2026 federal brackets, and standard FICA. Your actual paycheck may vary with pre-tax deductions, additional withholding, TABOR refunds, and state-specific subtractions.
Two fully worked 2026 examples for a single Colorado filer, using the flat 4.40% rate on federal taxable income:
| Item | Salary ($70,000/yr) | Hourly ($25/hr, 40 hrs) |
|---|---|---|
| Annualized gross | $70,000 | $52,000 |
| CO taxable (after $16,100) | $53,900 | $35,900 |
| CO income tax (4.40%) | $2,372 | $1,580 |
| Federal income tax | $6,570 | $4,060 |
| FICA (7.65%) | $5,355 | $3,978 |
| Net per year | $55,703 | $42,382 |
| Net per biweekly check | $2,142 | $1,630 |
Colorado's Taxpayer Bill of Rights (TABOR) caps state revenue growth and can require the state to refund surplus collections to taxpayers. In some years the refund has come partly as a temporary income-tax rate reduction (for example to 4.25% or 4.40% depending on the year) or as a flat refund on your return. This does not change your paycheck withholding directly, but it can lower your effective Colorado tax when you file. The calculator uses the standard 4.40% rate for 2026.
Mostly no. A few Colorado cities — Denver, Aurora, Glendale, Greenwood Village, and Sheridan — levy a small flat Occupational Privilege Tax (OPT), typically a few dollars per month per employee who works in the city. There is no broad local income tax in Colorado. Your main Colorado income tax is the state flat 4.40%; the OPT, where it applies, is a small fixed monthly amount, not a percentage of wages.
Colorado's FAMLI program funds paid family and medical leave through a payroll premium split between employer and employee. The employee share is a small percentage of wages (the total premium is set annually and roughly half is paid by employees at larger employers). It appears as a separate line on Colorado pay stubs and slightly reduces take-home pay. The calculator focuses on income tax and FICA; check your pay stub for the FAMLI line.
| State | State income tax on $70,000 | Approx. net |
|---|---|---|
| Wyoming (no income tax) | $0 | ~$58,075 |
| Arizona (2.5% flat) | ~$1,541 | ~$56,534 |
| Colorado (4.40% flat) | ~$2,372 | ~$55,703 |
| New Mexico (graduated) | ~$2,900 | ~$55,200 |
Colorado's 4.40% flat rate is middle-of-the-pack in the Mountain West — higher than no-income-tax Wyoming and low-flat Arizona, but its federal-taxable-income starting point keeps the effective burden moderate.
Colorado uses Form DR 0004 alongside the federal W-4 to fine-tune state withholding. You can use it to set an annual withholding allowance or request additional Colorado withholding. Accurate elections matter so you neither over-withhold (giving the state an interest-free loan) nor under-withhold (risking a balance due). Because Colorado's tax is a flat 4.40% on federal taxable income, withholding is fairly predictable. The calculator uses the federal standard deduction as the starting point; your actual withholding depends on your DR 0004 election.
Self-employed Coloradans owe the flat 4.40% on Colorado taxable income, plus federal self-employment tax (15.3%) and federal income tax. Because no employer withholds, you generally pay Colorado and federal tax through quarterly estimates. This calculator is built for employees; self-employed filers should also budget for quarterly payments to avoid penalties.
For the most accurate result, enter figures straight from your own documents rather than estimates. Pull your gross pay and pay frequency from a recent pay stub, your filing status from your most recent tax return, and any pre-tax deductions (retirement, health, HSA) from your benefits enrollment. Small differences in these inputs — especially filing status and pre-tax contributions — can change your take-home by hundreds or thousands of dollars a year. The calculator uses verified 2026 federal brackets, the $184,500 Social Security wage base, and Colorado's 4.40% rate, so matching its inputs to your actual situation gives a reliable estimate you can plan around.
Tax brackets, the standard deduction, the Social Security wage base, and TABOR-driven rate adjustments all change over time. Using a calculator built on the correct 2026 numbers — rather than a prior-year tool — matters because the differences compound across a full year of pay. This page reflects the 2026 federal standard deductions ($16,100 single / $32,200 joint), the 2026 bracket thresholds, the $184,500 Social Security wage base, and Colorado's 4.40% flat rate. When the IRS and Colorado DOR announce the following year's figures, the inputs here will be updated so your estimate stays current.
Colorado has a flat 4.40% state income tax for 2026. The flat rate applies to Colorado taxable income, which starts from federal taxable income (so it incorporates the federal standard deduction). TABOR refunds can temporarily lower the effective rate in some years.
About $55,703 a year for a single filer in 2026, or roughly $2,142 per biweekly paycheck. That reflects $2,372 Colorado income tax (4.40% of taxable income), about $6,570 federal tax, and $5,355 FICA, for an effective rate near 20.4%.
Yes. Colorado starts its income tax from federal taxable income, so it effectively includes the federal standard deduction ($16,100 single / $32,200 joint for 2026). Colorado then applies its flat 4.40% rate to that figure, with some state-specific additions and subtractions.
A few Colorado cities (such as Denver, Aurora, and Glendale) levy a small flat Occupational Privilege Tax - a few dollars per month per employee - but Colorado has no broad local income tax. Your main Colorado income tax is the flat 4.40% state rate.
Colorado's Taxpayer Bill of Rights (TABOR) can require the state to refund surplus revenue, sometimes via a temporary income-tax rate reduction. This does not change paycheck withholding directly but can lower your effective Colorado tax when you file. The 4.40% rate is the standard 2026 rate.
Federal tax does not depend on your state. On $70,000 a single filer owes about $6,570 in 2026 federal income tax after the $16,100 standard deduction, plus $5,355 FICA. Only the 4.40% Colorado flat tax is state-specific.