State & relocation (2026)

State tax rules diverge sharply — no income tax, flat tax, or graduated brackets — and relocation can create part-year or multi-state filing obligations.

These calculators help you compare take-home across states, allocate wages when you work in more than one state, and sketch estimated payments where a state requires them.

Always verify domicile, convenience-of-employer, and reciprocity treaties with the relevant state departments of revenue before you move or change remote-work arrangements.