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How do you calculate state income tax on a paycheck?

Short answer

Nine states charge nothing; the rest use either a flat rate or brackets. Flat-rate example: Illinois takes 4.95% of taxable pay — about $99 of a $2,000 biweekly check. Bracketed states like California range from 1% to 13.3% depending on income.

State tax on a $2,000 biweekly check ($52,000/year), single (2025)

State	System	Tax per check
Texas / Florida	No income tax	$0
Illinois	4.95% flat	≈ $92 after exemption
New York	Brackets 4%–10.9%	≈ $86
California	Brackets 1%–13.3%	≈ $42 at this income
Pennsylvania	3.07% flat	≈ $61

How to read this table

Most rows are ranges, not single figures. The low end usually reflects a weaker month, a softer audience geography, or an unoptimised setup; the high end reflects a well-run, well-targeted operation of the same size.
With 5 reference points in the "state tax on a $2,000 biweekly check ($52,000/year), single (2025)" table, the fastest way to use this page is to find the closest row, take its system, then stress-test it ±30% before you build a plan on it.

Context

Three wrinkles catch people: some states (Pennsylvania) tax gross with almost no deductions; some cities add their own income tax (New York City adds ~3–4%, Detroit 2.4%); and working remotely across state lines can create withholding in two states, usually settled by a credit on your home-state return. Nine states have no wage income tax: Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming.

What moves this number

Filing status and W-4 settings

Married filing jointly roughly doubles bracket widths and the standard deduction, so the same salary withholds very differently by status. Dependents, second jobs, and extra-withholding entries on the W-4 move every paycheck.

State and local taxes

Nine states levy no wage income tax while top marginal rates elsewhere exceed 10%, and cities like New York add their own layer. The same salary can differ by hundreds of dollars per month purely on location.

Pre-tax benefits

Traditional 401(k), HSA, and health premiums come out before income tax, shrinking both taxable income and the withholding on each check — a raise in contributions costs less take-home than the headline amount.

Methodology

Estimates use 2025 state rates and standard exemptions/standard deductions where applicable, annualized from a $2,000 biweekly check. Local taxes excluded unless noted.

Assumptions and caveats

Figures use current-year federal brackets and standard deductions; your actual withholding depends on your W-4 and state.
Estimates exclude credits (Child Tax Credit, EITC), which can materially change the final number.
This is educational arithmetic, not tax advice — confirm decisions with a tax professional.
This page was last reviewed on 2026-10-01. Ranges are updated as new data lands, so re-check before using them in a contract or a plan.
Use these numbers as a starting range, not a guarantee — your own historical data always beats a benchmark.

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