Skip to content
US · 2025

US State Income Tax Calculator

Calculate your combined federal and state income tax for California, New York, Texas, Florida, and Washington. Uses 2024 IRS brackets and standard deductions.

Last reviewed: 5 September 2025Source: HMRC — Tax ratesUpdated every: tax year
US State Income Tax Calculator · USUS Tax

Federal Tax

$8,341.00

State Tax

$3,128.09

Total Tax

$11,469.09

Net Income

$63,530.91

Effective Rate

15.30%

Rates & sources

UK tax rates and thresholds, as published by HMRC. Scotland and Wales have devolved rates for income tax and property transactions.

Source: HMRC — Tax rates — figures refreshed at the start of each tax year.

When to use this calculator

  • Before accepting a pay change, bonus, pension contribution, or salary-sacrifice option.
  • When you want to compare employed, self-employed, or dividend-based income scenarios.
  • When you need a simple take-home estimate before running payroll or filing returns.
  • When you are approaching the £100,000 income level and want to understand the personal allowance taper effect.
  • When you are planning a salary sacrifice arrangement and need to see the net pay impact before agreeing terms.

A realistic US planning example

Use these sample inputs as a quick scenario test, then change one variable at a time to compare outcomes.

Annual Income ($)

$55,000

Filing Status

Single

State

California

After entering these figures, review federal tax, state tax and total tax together rather than in isolation — each metric tells a different part of the story. Then rerun the tool with one input adjusted to see which variable has the biggest effect on all three outputs before you settle on a plan.

How to read your results

Federal Tax

Review this figure alongside your gross income so you can understand the true cost of deductions and plan around any thresholds before the tax year closes. If the figure looks higher than expected, check whether any pension or gift-aid contributions could reduce your taxable income.

State Tax

Review this figure alongside your gross income so you can understand the true cost of deductions and plan around any thresholds before the tax year closes. If the figure looks higher than expected, check whether any pension or gift-aid contributions could reduce your taxable income.

Total Tax

Review this figure alongside your gross income so you can understand the true cost of deductions and plan around any thresholds before the tax year closes. If the figure looks higher than expected, check whether any pension or gift-aid contributions could reduce your taxable income.

Net Income

Use this metric to compare scenarios side by side and understand how changes in the key inputs drive the final outcome. If the figure surprises you, isolate one variable at a time and rerun the calculation to identify which assumption is responsible.

Effective Rate

The effective rate lets you compare options on a true like-for-like basis rather than being misled by different compounding periods or fee structures. Use it to cut through headline marketing rates when shortlisting providers or products.

Method & assumptionsAuthoritative sources

This calculator models 2024 federal income tax using the standard deduction and the seven IRS marginal brackets, alongside state income tax for the five most populous states: California (progressive rates up to 12.3%), New York (progressive rates up to 10.9%), Texas (no state tax), Florida (no state tax), and Washington (no state tax). The federal calculation uses the 2024 standard deduction of $14,600 (single) or $29,200 (married filing jointly) and applies tax at increasing bracket rates. State tax uses each state's own standard deduction and brackets for the 2024 tax year. This calculator does not model FICA payroll taxes (Social Security at 6.2% up to $168,600 and Medicare at 1.45%), the Additional Medicare Tax of 0.9% on high earners, the Alternative Minimum Tax, or credits such as the Child Tax Credit or Earned Income Credit — all of which affect the final tax liability. Always confirm your estimated liability with a CPA or by using official IRS tools.

Common mistakes

  • !Entering gross income when you really want take-home pay, or vice versa.
  • !Ignoring pension contributions, deductions, or local tax rules that change the result.
  • !Comparing monthly and annual figures without standardising them first.
  • !Overlooking the National Insurance threshold changes that apply mid-year when rates or bands are adjusted in a Budget.
  • !Assuming a salary sacrifice benefit reduces take-home pay by the full gross amount, rather than only the after-tax cost.

What to do next

  • Check the same scenario with related pay or deduction calculators to see the full picture.
  • Keep a copy of the assumptions you used so you can compare next tax year or pay period accurately.
  • Read the related guides below if you are choosing between multiple income or deduction options.
  • If you are self-employed, run the self-employment tax calculator alongside this result to compare the net position against employed income.
  • Check whether increasing your pension contribution by even one or two percent changes the take-home significantly — use the pension calculator next.

Frequently asked

The US uses a progressive federal tax system with seven marginal tax rates ranging from 10% to 37%. You only pay each rate on income within that bracket — not on all your income. The standard deduction ($14,600 single / $29,200 married filing jointly for 2024) is subtracted from gross income before brackets are applied.

Use arrow keys to navigate items, Enter or Space to expand/collapse.