Moving to a new state is exciting, but it can create a surprisingly complex tax situation. You may need to file returns in two states, deal with overlapping rules, and navigate special provisions for remote workers. Here is what you need to know.
Partial-Year Residency Rules
When you move from one state to another during the year, you typically become a partial-year resident of both states. This means you file a part-year return in each state, reporting income earned while you were a resident.
Most states use the actual date of your move to split the tax year. Some key factors that determine your residency date include:
- When you physically relocated
- When you changed your driver’s license and voter registration
- Where your primary home is located
- Where your spouse and dependents live
For example, if you move from California to Texas on July 1, you would file a California part-year return reporting income earned from January through June. Since Texas has no state income tax, you would not file a Texas return.
Which State Gets to Tax What
The general rule is straightforward: each state taxes income earned while you were a resident. But complications arise with certain income types:
Wages and salary are typically allocated based on where you physically performed the work. If you worked in California through June and then in Florida starting July, California taxes the first six months of wages.
Investment income (interest, dividends, capital gains) is usually taxed by your state of residence on the date the income was received or realized.
Retirement distributions are taxed by your state of residence when received, thanks to federal law (4 U.S.C. Section 114) that prohibits states from taxing retirement income of former residents.
Rental property income is taxed by the state where the property is located, regardless of where you live.
Remote Work Complications
Remote work has created new tax headaches. If you live in one state but work for a company in another, multiple states may claim the right to tax your income.
The convenience-of-employer rule is the biggest trap. States including New York, Connecticut, Delaware, Nebraska, and Pennsylvania tax remote workers based on where their employer is located — unless you work remotely out of necessity rather than convenience. This means a New Jersey resident working from home for a New York employer may owe New York income tax on their full salary.
Most states allow a credit for taxes paid to other states, but the credit may not fully offset the double taxation, especially if your home state has a lower tax rate than the employer’s state.
No-Income-Tax State Strategies
Nine states have no individual income tax: Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming (New Hampshire taxes only interest and dividends, and that tax is fully phased out as of 2025).
Moving to one of these states can produce significant savings. A high earner paying California’s 13.3% top rate who relocates to Florida could save tens of thousands annually. However, states like California aggressively audit departing residents. To establish domicile in your new state, make sure to:
- Physically spend the majority of your time in the new state
- Update your driver’s license and voter registration
- Move your banking and professional relationships
- Sell or lease out your former home
- File a declaration of domicile if your new state offers one
California’s Franchise Tax Board may presume you are still a resident if you maintain significant ties to the state. The safe harbor requires spending fewer than 9 months in California during the tax year.
Practical Example
Sarah earns $150,000 and moves from New York (top rate 10.9%) to Florida on August 1. She worked in New York for seven months and remotely from Florida for five months.
On her New York part-year return, she reports seven months of wages: approximately $87,500. New York taxes this at her marginal rate, resulting in roughly $5,500 in state tax. The five months of Florida wages are tax-free at the state level.
Compared to staying in New York all year (approximately $9,400 in state tax), Sarah saves about $3,900 — and if she remains in Florida for a full future year, she saves the entire amount.
Key Filing Tips
- File part-year returns carefully. Most states have specific part-year resident forms. Do not file as a full-year resident in either state.
- Claim the credit for taxes paid to other states. This prevents double taxation on the same income.
- Document your move date. Keep records of your lease, utility connections, moving company receipts, and address changes.
- Check for reciprocity agreements. Some neighboring states (like Virginia and Maryland, or Illinois and Indiana) have agreements that simplify taxation for cross-border workers.
- Consider estimated tax payments. If your new state has income tax and your employer does not withhold for it, you may need to make quarterly estimated payments to avoid penalties.
Bottom Line
An interstate move can save you thousands in state taxes or create unexpected liabilities if you are not careful. The key is establishing clear residency in your new state, understanding which income each state can tax, and filing accurate part-year returns. Consult your state’s tax authority website or a tax professional if your situation involves remote work across state lines.