Your Pay Details
Your Take-Home Pay
| Gross Pay | $0 |
| Federal Income Tax | –$0 |
| Social Security (6.2%) | –$0 |
| Medicare (1.45%) | –$0 |
| Colorado State Tax (4.4%) | –$0 |
| Take-Home Pay | $0 |
How Your Colorado Paycheck Works
Colorado uses a flat 4.4% state income tax rate applied to your federal taxable income (after the federal standard deduction), making the effective rate on gross pay somewhat lower than 4.4%.
Federal Income Tax
Calculated using 2025 federal brackets from 10% to 37%, applied to your taxable income after the standard deduction.
Social Security
6.2% of your gross pay up to $176,100. Funds the Social Security retirement and disability program.
Medicare
1.45% of all gross pay with no income cap. High earners over $200K pay an additional 0.9% surtax.
Colorado State Tax
Colorado taxes income at a flat 4.4% applied after the federal standard deduction. Your effective state tax rate on gross pay is slightly lower than 4.4%.
2025 Federal Tax Brackets
The US uses a progressive tax system — you only pay each rate on income within that bracket, not your entire salary.
Single Filers
| Rate | Income Range |
|---|---|
| 10% | $0 – $11,925 |
| 12% | $11,926 – $48,475 |
| 22% | $48,476 – $103,350 |
| 24% | $103,351 – $197,300 |
| 32% | $197,301 – $250,525 |
| 35% | $250,526 – $626,350 |
| 37% | Over $626,350 |
Married Filing Jointly
| Rate | Income Range |
|---|---|
| 10% | $0 – $23,850 |
| 12% | $23,851 – $96,950 |
| 22% | $96,951 – $206,700 |
| 24% | $206,701 – $394,600 |
| 32% | $394,601 – $501,050 |
| 35% | $501,051 – $751,600 |
| 37% | Over $751,600 |
Major Cities in Colorado
Whether you live in Denver, Colorado Spgs, or anywhere else in Colorado, state tax rates apply uniformly — your city does not change your paycheck calculation. Local taxes and cost of living vary by city, as shown below.
* Population from U.S. Census estimates. Home prices and rent are 2023–2024 estimates. Local income tax applies to residents unless noted.
Frequently Asked Questions
What is Colorado's state income tax rate?
Colorado has a flat 4.4% state income tax rate, applied to your federal taxable income (gross income minus the federal standard deduction). For a single filer, the first $15,000 is deducted before the 4.4% rate applies.
What percentage of my paycheck goes to taxes in Colorado?
In Colorado, a single filer earning $55,000/year pays roughly 3.3–3.8% in effective state income tax (since the standard deduction reduces the base) plus federal taxes and FICA. Total deductions typically run 24–27% of gross pay.
What is FICA and how much is it?
FICA covers Social Security (6.2% up to $176,100) and Medicare (1.45% with no cap). Together that's 7.65% of gross pay. Every US worker pays these regardless of state.
How do pre-tax deductions like a 401(k) reduce my taxes?
Pre-tax deductions reduce your federal taxable income, lowering your tax bill. A $5,000 annual 401(k) contribution could save $600–$1,100 in federal taxes depending on your bracket.
How accurate is this calculator?
This calculator uses 2025 federal brackets and the state's current flat rate. Results are close estimates — your actual paycheck may vary based on W-4 elections and employer deductions.