How Do You File Taxes If You Lived in Two States During the Year?
Moving to a new state partway through the year changes more than an address — it usually changes how many state tax returns get filed and how income gets divided between them. Instead of one full-year return, most movers end up filing two partial-year returns.
The short answer
Someone who lived in two different states during the same year generally files a part-year resident return in each state, reporting the portion of income earned or received while living there. Depending on the states involved, a resident credit can help prevent the same income from being taxed twice.
How income typically gets divided
Each state generally wants to tax income connected to the time someone was a resident there, plus any income sourced to that state even during the part of the year spent living elsewhere, such as wages from a job physically performed in that state before the move. Payroll records, moving dates, and sometimes a manual allocation based on where income was earned all come into play, since W-2s and 1099s don’t automatically split themselves by state of residence. This is different from a full-year resident return, which simply reports everything in one place without needing to divide it. It’s also different from how active-duty military filers are often treated, since federal protections can let a service member keep a single state of legal residence even through a permanent-change-of-station move that would otherwise look like a two-state year for a civilian.
Why double taxation is a real risk
Because two different states can each have a legitimate claim on a piece of the same income, particularly income sourced to a state where someone worked but no longer lives, there’s a real risk of that income getting taxed twice without something to offset it. Many states address this through a resident credit, which allows a taxpayer’s home state to give credit for tax paid to another state on the same income. Not every state pair works the same way, and the credit doesn’t always cover the full amount, so the exact result depends on the specific states and their agreements with each other.
A simplified example
Someone who earns income and lives in one state for the first half of the year, then moves and does the same in a second state for the rest of the year, would typically report the first half of income to state one and the second half to state two, each as a part-year resident. If a chunk of income straddles the move, such as a bonus paid after the relocation for work done before it, sourcing rules determine which state has the stronger claim.
What to gather before filing
- Moving date documentation. Lease agreements, utility start dates, or a driver’s license update can help establish exactly when residency changed.
- Income timing records. Pay stubs or employer statements showing which pay periods correspond to which state help with an accurate split.
- Any state reciprocity details. A handful of neighboring states have agreements that simplify how commuters or short-distance movers are taxed, which can change the filing approach entirely.
- Prior W-2 or 1099 forms, similar to what’s compared when 1099-NEC and 1099-MISC forms get sorted out, since accurate source documents make the state allocation far easier.
What to weigh
The mechanics of a two-state year get more complicated when someone also changes jobs, works remotely for an out-of-state employer, or has income types beyond wages, since how taxable income gets calculated can vary by state even before residency splitting comes into play. Rules on part-year filing, resident credits, and reciprocity agreements are set individually by each state and change over time, so what applied in a past move isn’t a reliable guide to how a new one will play out.
The takeaway
A year split between two states usually means two returns, each covering its own slice of time and income, with a resident credit doing the work of preventing double taxation where the rules allow it. Keeping clear records of the move date and income timing makes that split far more manageable when it’s time to file.