2026 tax year · Colorado
1099 tax calculator for Colorado
Colorado taxes income at a flat 4% for 2026, applied on top of federal income tax and self-employment tax.
Switching state opens that state's page.
Enter your numbers and press Calculate to see your 2026 estimate.
How 1099 tax works in Colorado
Colorado applies a single 4% rate to taxable income for 2026, so every extra dollar of 1099 profit is taxed at the same state rate.
On top of that sits the federal layer, which is the same wherever you live: self-employment tax plus federal income tax. The 1099 tax calculator hub works through how that half is built.
Worked example: $50,000 of 1099 income in Colorado
A single filer with $50,000 of net 1099 income and no W-2 wages, taking the standard deduction, owes an estimated:
| Self-employment tax | $7,065 |
| Federal income tax | $2,667 |
| Colorado state income tax | $1,859 |
| Total tax | $11,591 |
| Effective rate | 23.2% |
| After-tax income | $38,409 |
What the rate alone doesn't tell you about Colorado
Colorado is one of the twelve states that still taxes Social Security benefits, which matters if you are drawing benefits alongside self-employment income.
Colorado against the states it borders
On $50,000, Colorado charges $2,000 of state income tax. Of the 6 states it borders, Wyoming is the lightest at nothing at all and Kansas the most expensive at $2,460, a spread of $2,460 on the same income.
| State | Tax on $50,000 | vs Colorado |
|---|---|---|
| Wyoming | No income tax | −$2,000 |
| Nebraska | $1,974 | −$26 |
| New Mexico | $2,160 | +$160 |
| Oklahoma | $2,215 | +$215 |
| Utah | $2,250 | +$250 |
| Kansas | $2,460 | +$460 |
- Wyoming has no income tax at all, so the same work done there costs $2,000 less in state tax than it does in Colorado.
- Nebraska would take $26 less, $1,974 against Colorado's $2,000.
- New Mexico would take $160 more, $2,160 against Colorado's $2,000.
- Oklahoma would take $215 more, $2,215 against Colorado's $2,000.
- Utah would take $250 more, $2,250 against Colorado's $2,000.
- Kansas would take $460 more, $2,460 against Colorado's $2,000.
What this estimate assumes
- Single filer, $16,100 federal standard deduction, net profit after expenses.
- No local income tax is modeled.
- No Colorado credits are applied beyond the deductions in its own rules.
Colorado 1099 tax questions
Does Colorado tax 1099 income?
Yes. Colorado taxes net profit from 1099 work the same way it taxes other income, at a flat 4%. On the $50,000 example above the state share is $1,859.
How much should a 1099 worker in Colorado set aside?
About 23% of net profit, based on the $50,000 single-filer example above ($11,591 of federal, self-employment and Colorado state tax combined). Your own rate moves with filing status, other income and deductions, run the calculator with your numbers.
Are there local income taxes in Colorado?
The estimate above models federal, self-employment and state income tax only, it does not include any city, county or school-district income tax. The 2026 dataset carries no local-tax note for Colorado, so check with the municipality where you live and work before relying on the state figure alone.
Do I owe Colorado tax on work done for an out-of-state client?
Colorado has no wage reciprocity agreements in the 2026 dataset. As a resident you generally report all your 1099 profit to Colorado regardless of where the client is, and claim a credit for income tax paid to another state on work performed there.
When are quarterly estimated payments due?
Federal 1040-ES payments for the 2026 tax year are due April 15, 2026, June 16, 2026, September 15, 2026, January 15, 2027. Colorado requires its own estimated payments; the 2026 dataset does not yet carry state-specific due dates, so confirm them with the Colorado tax agency.