Self-Employment Tax in Colorado
What a freelancer or 1099 contractor really owes in Colorado, the 15.3% self-employment tax, federal income tax, and Colorado's state income tax. Real numbers, instant, no sign-up.
What Colorado self-employed taxes look like
Estimated 2026 total tax for a single filer, net self-employment profit, Colorado.
| Net profit | Total tax | Colorado state tax | Effective rate |
|---|---|---|---|
| $40,000 | $9,063 | $1,636 | 22.7% |
| $75,000 | $18,562 | $3,067 | 24.7% |
| $120,000 | $33,369 | $4,907 | 27.8% |
Tell us about your year
Enter your self-employment income to see your estimated federal + state tax, self-employment tax, and quarterly payments, instantly.
Colorado self-employment tax, in plain terms
Self-employment tax, 15.3% of your net earnings for Social Security and Medicare, is federal and the same in every state. What differs in Colorado is the income-tax layer. Colorado taxes your self-employment profit at its own rates on top of federal income tax, so your all-in effective rate runs a few points higher than in a no-income-tax state. The calculator above already applies Colorado's brackets, so the number you see is the real one.
Frequently asked
Does Colorado have a state income tax for the self-employed?
Yes. On top of federal income tax and the 15.3% self-employment tax, Colorado taxes your self-employment income at its state rates. On a $100,000 self-employed income, Colorado's income tax works out to roughly 4.1% of income in this estimate.
How much self-employment tax will I owe in Colorado?
Self-employment tax itself is the same everywhere, 15.3% of 92.35% of your net profit, for Social Security and Medicare. What changes by state is the income-tax layer on top. Use the calculator above with your own numbers; it already applies Colorado's brackets.
Do I pay quarterly estimated taxes in Colorado?
If you expect to owe $1,000 or more in federal tax, the IRS wants quarterly estimated payments (mid-April, June, September, and January). Colorado generally has its own quarterly estimates too when you owe state tax. The calculator shows your next federal quarterly amount.