Salary calculators give rough numbers. ProSalaryTax gives the exact breakdown — federal, state, FICA, take-home — for all 50 US states, 2026 brackets. Features: salary + freelancer + bonus calculators, state comparison, 401(k) support, English/Spanish, free. $100k in Texas = $84,088 take-home. Same salary in California = $74,178. That $10K gap changes everything.