Moving States: Tax Guide

Tax domicile is your legal home for tax purposes. You can have multiple residences (homes) but only one domicile. States determine domicile using a multi-factor test that examines where you spend most of your time, where your family lives, where you work, and where your financial and social ties are located.

You establish domicile by: (1) moving your primary residence to the new state, (2) moving your family and employment to the new state, (3) spending 183+ days in the new state during calendar year (or consecutive 12-month period), (4) establishing financial and social ties (bank accounts, clubs, voter registration). Breaking domicile means abandoning all these ties; physical departure alone is insufficient.

If you change domicile during the calendar year, you must file part-year resident returns in both your former and new states. This prevents double taxation by allocating income to the state where it was earned. Part-year returns report only income earned during the portion of the year you were a resident of each state.

Allocating income correctly is critical. Income from employment is sourced to the state where you perform the work. Self-employment income may be sourced to where the business is located or where services are performed (depends on state law and type of business). Investment income (interest, dividends, capital gains) is usually sourced to the state of your domicile on the day the income is earned.

The 183-day rule is not an IRS law but a practical guideline. States often use 183 days (over half a year) in a state as a bright-line test for establishing residency. However, states do not uniformly apply this rule; some use 180 days, others use multi-factor test regardless of days. If audited, the best defense is documented proof of days in each state.

Days present in a state for purposes of the 183-day test count any day (or partial day) you are physically present. In-and-out same day counts as one day. Exception: some states allow days present for temporary travel not to count (vacations). Generally, safer to assume all days count. Use a calendar app (Google Calendar, Outlook) to track days by location.

California, New Jersey, and New York do not have formal "exit taxes," but they are highly aggressive in claiming resident status and taxing departing high-net-worth individuals. These states use multi-factor tests and have been known to pursue audits of relocated residents for years, attempting to prove they remained domiciled in the state and owe back taxes.

New Jersey and New York employ similar aggressive tactics. New Jersey Taxation and Revenue Division audits residents who move claiming they remained NJ domiciled. New York Department of Taxation and Finance targets NYC residents. Both use primary residence location and days present as key factors, but also examine family, employment, and financial ties. High-income movers to no-tax states (FL, NV, TX) are primary targets.

Remote work creates nexus (tax connection) in multiple states. If you live in one state but work for a company in another state, income sourcing depends on where services are performed. Generally, income is sourced to the state where the employee resides and performs work.

However, some states use "source state" rules differently. New York, for example, applies 'convenience of employer' doctrine: if employee could work remotely but chooses to be in NY, income sourced to NY (even if work performed in home). This is aggressive interpretation. Safest: ensure you actually perform work outside high-tax state (document time tracking, Slack history, location data).

Nine states impose zero income tax on wages and salaries: Alaska, Florida, Nevada, South Dakota, Tennessee (phased out by 2026), Texas, Washington, and Wyoming. Two states (New Hampshire, Tennessee) tax only dividends and interest, not wages. These states offset the lack of income tax with higher sales tax, property tax, or other fees.

Trade-offs vary: Florida has no income or sales tax but high property tax (homestead exemption provides relief). Texas has high sales tax (8.25% top) but low property tax and no income tax. Nevada has no income tax and low property tax but high sales tax (8.25%). Factor in total tax burden (income + sales + property + local), not just income tax.

Most states have safe harbors (legal protections) if you meet specific requirements for establishing new domicile. Safe harbors provide objective tests, reducing audit risk. Some states offer explicit safe harbors (e.g., CA Prop 63 safe harbor, though bill was vetoed); others rely on published guidelines.

California repealed its formal safe harbor law (Prop 63 vetoed 2022), but FTB still respects similar safe harbor practices. New York and New Jersey rely on IRS guidance and multi-factor tests; no formal safe harbors, but FTB generally respects clear breaks from former state (all the steps above).