Estimate state income tax liability based on income and state of residence.
Estimates state income tax based on your total income and state of residence. State income tax rates vary dramatically, from 0% in states like Texas and Florida to 13.3% in California. This skill helps you approximate your state tax bill for planning and quarterly payment purposes.
spending_summary — Pull total income (wages, self-employment, investment) for the tax yeartransaction_search — Find state tax payments already made (withholding or estimated payments)export_transactions — Export income and payment data for state return preparationspending_summary to determine total gross income for the tax year.transaction_search to find state tax payments already made (look for state tax authority names, "state withholding," or similar).These states impose no state income tax on earned income:
Alaska, Florida, Nevada, New Hampshire (interest/dividends only, fully repealed as of 2025), South Dakota, Tennessee, Texas, Washington, Wyoming.
Note: Washington imposes a 7% capital gains tax on gains exceeding $270,000. New Hampshire historically taxed interest and dividends but phased this out entirely by 2025.
| State | Top Marginal Rate | Structure | Notes |
|---|---|---|---|
| California | 13.3% | Progressive (10 brackets) | Highest in the nation; 1% mental health surcharge above $1M |
| New York | 10.9% | Progressive (9 brackets) | NYC adds 3.078-3.876% |
| New Jersey | 10.75% | Progressive | Kicks in above $1M |
| Oregon | 9.9% | Progressive (4 brackets) | No sales tax offsets higher income tax |
| Minnesota | 9.85% | Progressive (4 brackets) | |
| Massachusetts | 5% flat + 4% surtax | Flat + surtax | 4% surtax on income above $1M (effective 2023) |
| Illinois | 4.95% | Flat rate | |
| Colorado | 4.4% | Flat rate | Reduced from 4.55% in 2024 |
| Arizona | 2.5% | Flat rate | Reduced to flat rate in 2023 |
| North Carolina | 4.5% | Flat rate | Phasing down to 3.99% by 2026 |
| Pennsylvania | 3.07% | Flat rate | One of the lowest flat rates |