State Tax Calculator
Compare a progressive state, a flat state and a no-income-tax state on the same income — then net off the property tax that no-income-tax states use to make up the difference.
State Tax Calculator
Results recalculate instantly on every keystroke. Nothing you type is transmitted.
What this result does not account for
- Results are a model, not a quotation — an institution's own figures govern.
- Every input is an assumption; change one and the answer changes with it.
- Rounding is applied only at the display layer, so totals may differ by a cent from a statement that rounds each line.
In short: On $95,000, a California-style progressive schedule costs $4,989.09 (5.25% effective against a 9.3% marginal rate) while a 4.75% flat state costs $4,512.50 and a no-income-tax state costs nothing. But a 1.1% property tax differential on a $400,000 home reclaims $4,400 of that saving, leaving just $589.09.
Formula
States that levy no income tax must raise revenue elsewhere. The comparison is only honest once property and sales taxes are netted off.
Worked Example
- Apply the state deduction. $95,000 − $5,363 = $89,637 taxable.
- Fill the progressive bands. The schedule yields $4,989.09 — a 5.25% effective rate against a 9.3% marginal band.
- Compare the flat state. 4.75% of the full $95,000 = $4,512.50, with no deduction at all.
- Net off the property tax. 1.1% more on a $400,000 home is $4,400 a year.
- Find the real saving. $4,989.09 − $4,400 = $589.09, and the break-even home value is $453,553.73.
Analyst's note. Relocating for tax is one of the most confidently made and least carefully modelled financial decisions. The headline is genuine — $4,989.09 a year, and $418,094.19 across thirty years if invested at 6%. But no-income-tax states fund themselves somehow, and property tax is the usual instrument: a 1.1% differential on a $400,000 home reclaims $4,400 of the $4,989.09, leaving $589.09. Above a $453,553.73 home value the move costs money outright. Note also the flat state's structure: 4.75% on every dollar with no deduction produces $4,512.50, remarkably close to a progressive schedule with a 9.3% top band.
Strengths & Limits Of This Model
Where this engine is strong
- Runs entirely in your browser — no figure you type is transmitted or stored.
- Shows the full working, so every number can be traced and challenged.
- Free, unmetered and free of affiliate incentives.
Where it stops
- Generalised assumptions cannot capture every individual circumstance.
- Jurisdiction-specific rules and mid-year changes may not be reflected.
- A model output is not a substitute for a professional review of your position.
Practical Use Cases
Evaluating a relocation for tax reasons
Enter your income and the home you would buy. The break-even home value tells you the point at which the property tax differential consumes the entire income tax saving — which for many buyers arrives sooner than expected.
Comparing job offers in different states
A higher gross in a high-tax state can net less than a lower gross in a no-tax one, or the reverse once housing is counted. Convert both to take-home with the Paycheck Calculator before deciding.
Understanding your marginal state rate
Progressive state schedules have many narrow bands, so the marginal rate of 9.3% sits far above the 5.25% effective rate. Use the marginal figure when valuing a raise or a deductible contribution.
Methodology & Editorial Standards
The progressive schedule uses California's 2024 single-filer brackets as a representative high-tax structure, with a simplified standard deduction and without the mental health services surcharge on income above $1m. The flat comparison applies a single rate to gross income with no deduction, which matches several states' treatment but not all — some flat states allow personal exemptions. State definitions of taxable income diverge substantially from federal and from each other, so this is a structural comparison rather than a filing estimate for any specific state. The property tax differential is a user input because effective rates vary enormously by county and by assessment practice, and some states cap annual assessment growth. Sales tax, local income taxes levied by cities, and estate taxes are not modelled and all shift the comparison further. The engine implements the standard published formula for this calculation. Inputs are validated for domain and sign before evaluation, and any undefined case returns an em-dash rather than a spurious value.
Computation runs in IEEE-754 double precision at full internal precision; rounding to two decimal places occurs strictly at the display layer, so no cumulative drift enters the result. All monetary outputs use accounting presentation — grouped thousands, two decimals, negatives in parentheses — so figures can be transcribed directly into a model or working paper. Division-by-zero and out-of-domain inputs return an em-dash rather than a misleading number.
This engine was reconciled against an independent reference implementation and hand-verified for the worked example above before release. Our full five-stage review process is published on the About Us page.
Disclaimer. This calculator is provided for informational and modelling purposes only and does not constitute financial, tax, legal, medical, or engineering advice. Verify all figures with a qualified professional before acting on them.
State Tax Calculator — 20 Expert FAQs
20 analyst-written answers to the questions practitioners actually ask — optimised for voice and answer-engine retrieval.
Which states have no income tax?
Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington and Wyoming. Each raises revenue through some combination of property, sales and severance taxes instead.
Is moving to a no-tax state actually worth it?
Less than the headline suggests. The $4,989.09 income tax saving here nets to $589.09 once a 1.1% property tax differential on a $400,000 home is counted — and above $453,553.73 of home value the move costs money.
How do no-income-tax states fund themselves?
Primarily through property and sales taxes, and in some cases severance taxes on oil and gas. Texas and New Hampshire have notably high property taxes; Washington relies on a high sales tax.
What is the difference between effective and marginal state rate?
The same distinction as federal. A 9.3% marginal band produces a 5.25% effective rate here, because the lower bands tax most of the income. Use marginal for decisions, effective for description.
Are flat taxes fairer?
That is a political question, but the arithmetic is instructive: a 4.75% flat rate on gross produces $4,512.50, close to a progressive schedule with a 9.3% top band, because the flat rate allows no deduction and taxes every dollar.
Do I pay state tax where I live or where I work?
Generally where you live, with a credit for tax paid to the state where you work. Reciprocity agreements between neighbouring states simplify this, but remote workers crossing state lines frequently face genuinely complicated filings.
Does working remotely change my state tax?
It can, substantially. Some states tax income earned by remote workers whose employer is located there, and a few apply a convenience-of-the-employer rule. Establishing residency requires more than changing a mailing address.
Can I deduct state tax from my federal return?
Yes, but the state and local tax deduction is capped at $10,000, which for most high-tax-state residents means the deduction no longer offsets much of the burden. This cap is what made state tax differentials so much more visible.
Which state has the highest income tax?
California, with a top marginal rate of 13.3% including the mental health surcharge. Hawaii, New York and New Jersey follow. Top rates apply only to very high incomes, so effective rates are far lower.
How does property tax vary?
Enormously — from under 0.3% in Hawaii to over 2% in New Jersey and Illinois, and assessment practices vary within states. This is why the differential is a user input rather than a fixed assumption.
Should I consider sales tax too?
Yes, particularly in states with no income tax. A high sales tax on a large share of your spending can match a moderate income tax. The Sales Tax Calculator quantifies it for a given purchase pattern.
What about local income taxes?
Some cities levy their own — New York City, Philadelphia and several Ohio municipalities among them. These are additional to state tax and are not modelled here, so verify local rates before comparing.
Do retirees pay state tax on pensions?
It varies dramatically. Several states exempt Social Security entirely, others exempt pension income up to a threshold, and a few tax both fully. This frequently matters more than the headline rate for anyone near retirement.
Is the thirty-year figure realistic?
It assumes the saving is invested at 6% and that rates and your income stay constant, neither of which holds. Treat $418,094.19 as an illustration of compounding, not a forecast.
How accurate is this for my state?
It is a structural comparison using a representative progressive schedule, not a filing estimate. State definitions of taxable income, credits and exemptions differ widely, so check your own state's rules before acting.
Is this state tax calculator free to use?
Yes. It is free, requires no account, and has no usage limits. ApexConverter is funded by contextual advertising, never by selling user data.
Is my data sent to a server?
No. The engine runs as Vanilla JavaScript inside your browser under our Zero-Server Client-Side Execution model. Your figures are computed locally and are never transmitted, logged, or stored.
How accurate is this calculator?
It applies the standard closed-form formula in IEEE-754 double precision, rounding only at the display layer. The engine is reconciled against an independent reference implementation before release.
Does it work on mobile?
Yes. The interface is mobile-first with numeric keypad hints and is tested down to a 320-pixel viewport with no horizontal scrolling.
Can I use it offline?
Largely, yes. Because computation is client-side, the page continues to calculate without a network connection once it has loaded.