The layer on top of the federal bill.

Nine states tax nothing, a few tax plenty, and the rest are somewhere specific in between. The estimator applies your state's actual structure.

Your state's real rules

Flat, progressive, or none — the engine carries each state's structure and applies the one you live under.

Federal plus state in a single estimate, which is the number that actually determines what a raise or a move is worth.

Comparing two states side by side turns “I hear Texas is cheaper” into an actual figure on your actual income.

State rules shift year to year; the engine's tests pin the current ones. Local city taxes aren't modelled.