F-1 OPT · Colorado
F-1 OPT take-home pay in Colorado (2026)
Pick a salary to see the full breakdown — federal income tax, FICA, Colorado state income tax, and your annual / monthly / bi-weekly net.
| Gross salary | Take-home | Monthly | Effective rate | |
|---|---|---|---|---|
| $60,000 | $49,448 | $4,121 | 17.6% | Details → |
| $80,000 | $64,168 | $5,347 | 19.8% | Details → |
| $100,000 | $78,888 | $6,574 | 21.1% | Details → |
| $120,000 | $93,322 | $7,777 | 22.2% | Details → |
| $150,000 | $114,802 | $9,567 | 23.5% | Details → |
| $180,000 | $136,282 | $11,357 | 24.3% | Details → |
| $220,000 | $163,464 | $13,622 | 25.7% | Details → |
| $280,000 | $200,911 | $16,743 | 28.2% | Details → |
| $350,000 | $243,331 | $20,278 | 30.5% | Details → |
| $500,000 | $334,231 | $27,853 | 33.2% | Details → |
How Colorado state income tax works for F-1 OPT holders
State tax structure
Flat 4.40%
State standard deduction
Conforms to federal / no separate amount
Colorado charges a single flat rate of 4.40% on taxable income. Unlike the federal system, there are no brackets — every dollar of taxable income is taxed at the same rate. This makes the state tax math simple: $F-1 OPT take-home in Colorado is dominated by federal tax + FICA, with the flat state component layered on top.
What's different for F-1 OPT holders in Colorado?
State income tax generally does not distinguish between visa categories — it only looks at where you live and where you work, not your immigration status. A few practical notes for F-1 OPT holders specifically:
- Residency. Most states deem you a tax resident if you are domiciled in the state or spend more than 183 days there during the calendar year, regardless of visa type.
- FICA exemption (federal) ≠ state-tax exemption. Even though you are FICA-exempt at the federal level for 5 years, Colorado still taxes your wages on its own rules.
- Standard deduction. Many states tie their standard deduction to federal rules — if you can't claim the federal standard deduction as a NRA, you may also be limited at the state level.