Colorado vs Wyoming Income Tax — 2026
A single filer earning $100,000 pays $3,692 less per year in Wyoming than in Colorado — $308 a month. Colorado charges $3,692; Wyoming charges $0.
Why this pair has a page: bordering states.
Colorado at $100K
$3,692
3.69%
Wyoming at $100K
$0
0.00%
Annual difference
$3,692
$308 a month
National ranks
25 vs 9
of 50, lowest tax first
The bill at every income
Single filer, standard deduction, no dependents. State income tax only.
| Gross income | Colorado tax | Wyoming tax | Difference |
|---|---|---|---|
| $50,000 | $1,492 | $0 | $1,492 less in WY |
| $75,000 | $2,592 | $0 | $2,592 less in WY |
| $100,000 | $3,692 | $0 | $3,692 less in WY |
| $150,000 | $5,892 | $0 | $5,892 less in WY |
| $250,000 | $10,292 | $0 | $10,292 less in WY |
| $500,000 | $21,292 | $0 | $21,292 less in WY |
| $1,000,000 | $43,292 | $0 | $43,292 less in WY |
How the two systems differ
| Colorado | Wyoming | |
|---|---|---|
| Tax structure | Flat rate | No income tax |
| Top marginal rate | 4.4% | None |
| Number of brackets | 1 | — |
| Standard deduction (single) | $16,100 | — |
| Personal exemption | None | — |
| Local income taxes | No | No |
| Capital gains | ordinary | none |
| Population (2024) | 5,957,493 | 587,618 |
By filing status
| Filing status | Colorado | Wyoming | Difference |
|---|---|---|---|
| Single | $3,692 | $0 | $3,692 less in WY |
| Married filing jointly | $2,983 | $0 | $2,983 less in WY |
| Married filing separately | $3,692 | $0 | $3,692 less in WY |
| Head of household | $3,337 | $0 | $3,337 less in WY |
Change the assumptions
Adjust income and filing status, or swap either state. The URL updates so you can share the exact comparison.
At $100,000 as a single filer, Wyoming costs $3,692 less per year than Colorado — $308 a month.
| Colorado | Wyoming | Difference | |
|---|---|---|---|
| State income tax | $3,692 | $0 | $3,692 |
| Per month | $308 | $0 | $308 |
| Effective rate | 3.69% | 0.00% | 3.69 pts |
| Marginal rate | 4.4% | None | 4.40 pts |
| Standard deduction | $16,100 | — | $16,100 |
| Taxable income | $83,900 | — | $83,900 |
| Tax structure | Flat rate | No income tax | |
| Local income taxes | No | No |
Full detail: Colorado · Wyoming · methodology
What this comparison leaves out
Sources for both states
- 1.Colorado Department of RevenueState revenue department2026 Colorado Withholding Worksheet for Employers (DR 1098, rev. 10/21/25)Retrieved · Worksheet 1 line 2c: "Multiply line 2b by 4.40% (0.044)" for tax year 2026.
- 2.Wyoming State LegislatureState statuteWyoming Statutes Title 39 - Taxation and RevenueRetrieved · Chapter 7 (Income Taxes): "39-7-101. Repealed By Laws 1998, ch. 5, s 4." Chapter 12 (Income Tax), 39-12-101 Preemption by state: "The state of Wyoming does hereby preempt for itself the field of imposing and levying income taxes, earning taxes, or any other form of tax based on wages or other income and no county, city, town or other political subdivision shall have the right to impose, levy or collect such taxes."
Figures on this page were last checked against these sources on . Found something wrong? Report it.