If I work in a different state than I live, do I need to file state income taxes for each state?

It really depends on how long you lived in each state during the tax period, and how much income you earned while living in that state. If you are not a resident of the state where you worked, you are subject to state tax on any income you receive from the state sources. If for example, you move into or out of New York State, you are subject to New York State tax on any income you receive while you are a New York State resident.

In either case, you must file Form IT-203, Nonresident and Part-Year Resident Income Tax Return, Nonresident and Part-Year Resident Income Tax Return. It is different for each state. For New Jersey: Any person who became a resident of New Jersey or moved out of the State during the year and whose income from all sources for the entire year is greater than $20,000 ($10,000 if filing status is single or married/CU partner, filing separate return) must file a New Jersey resident income tax return (Form NJ-1040) and report that portion of their income received while a resident of New Jersey.

A part-year resident who received income from New Jersey sources while a nonresident of this State must also file a New Jersey nonresident return (Form NJ-1040NR) if their income from all sources for the entire year exceeds the filing threshold above. Part-year residents (and part-year nonresidents) must prorate all income, exemptions, deductions, and credits, as well as the pension and other retirement income exclusions, if applicable, to reflect the period covered by the return. It really depends on how long you lived in each state during the tax period, and how much income you earned while living in that state.

If you are not a resident of the state where you worked, you are subject to state tax on any income you receive from the state sources. If for example, you move into or out of New York State, you are subject to New York State tax on any income you receive while you are a New York State resident. In either case, you must file Form IT-203, Nonresident and Part-Year Resident Income Tax Return, Nonresident and Part-Year Resident Income Tax Return.

It is different for each state. For New Jersey: Any person who became a resident of New Jersey or moved out of the State during the year and whose income from all sources for the entire year is greater than $20,000 ($10,000 if filing status is single or married/CU partner, filing separate return) must file a New Jersey resident income tax return (Form NJ-1040) and report that portion of their income received while a resident of New Jersey. A part-year resident who received income from New Jersey sources while a nonresident of this State must also file a New Jersey nonresident return (Form NJ-1040NR) if their income from all sources for the entire year exceeds the filing threshold above.

Part-year residents (and part-year nonresidents) must prorate all income, exemptions, deductions, and credits, as well as the pension and other retirement income exclusions, if applicable, to reflect the period covered by the return.