Thinking about changing your state of residence? The difference in state income tax between two states can add up to tens of thousands of dollars per year. This calculator gives you a quick estimate of the dollar impact so you can make an informed decision.
How This Calculator Works
Enter your annual taxable income, select your current state, and select the state you're considering. The calculator applies each state's 2026 marginal tax brackets to compute your estimated state income tax in both states, then shows the difference.
- Marginal brackets — tax is computed using graduated brackets, not a single flat rate on all income
- Effective rate — the actual percentage of your total income paid in state tax
- Annual savings — the difference between the two states' tax bills
Your Estimated Savings
Estimate only. This calculation uses simplified 2026 brackets for single filers. Actual tax owed depends on filing status, deductions, credits, and local taxes. Consult a tax professional for precise figures.
What This Calculator Doesn't Show
State income tax is just one piece of the puzzle. Before making a move based solely on tax savings, consider these additional factors:
- Local income taxes. Some cities impose their own income tax. New York City adds up to 3.876%, and cities in Ohio, Pennsylvania, and Michigan levy local taxes. These aren't included in this calculator.
- Property taxes. No-income-tax states like Texas and New Hampshire have some of the highest property tax rates in the country. If you own a home, this can significantly reduce your net savings.
- Sales tax. States without income tax often have higher sales tax. Washington state charges 6.5% (plus local surcharges up to ~10.5%). Tennessee's combined rate can exceed 9.5%.
- Cost of living. Housing, healthcare, and general expenses vary widely between states. A lower tax bill doesn't help if rent costs 50% more.
- Departure state audits. High-tax states like New York, California, and New Jersey actively audit residents who claim to have moved. If you don't cleanly sever ties, your former state can claim you never left. See our NY audit survival guide.
How to Properly Change Your State Residency
Simply moving isn't enough. To establish residency in a new state and end it in your old one, you typically need to:
- Physically move to and spend the majority of your time in the new state
- Get a new driver's license and register to vote
- Update your address with your employer, bank, and the IRS
- Register your vehicles in the new state
- Close or minimize ties in the departure state (sell or rent your home, move bank accounts, change doctors)
- Document your days in both states — the Days in State app does this automatically
For a complete guide, see How to Prove State Residency for Tax Purposes.
This tool provides estimates for educational purposes only. It is not tax advice. State tax calculations are simplified and may not reflect your actual tax liability. Always consult a qualified tax professional for advice about your specific situation.