Income Tax Calculator
Tax Information
Tax Calculation Results
Enter your income details and click "Calculate Tax" to see your estimated tax liability.
Understanding Your Tax Calculation
How Tax Brackets Actually Work
The US uses a progressive tax system, which means your income gets sliced into chunks and each chunk is taxed at its own rate. The first slice is taxed at the lowest rate, the next slice at a higher rate, and so on up the ladder. You never pay your top rate on all of your income.
This is also why a raise can't leave you with less take-home pay. Landing in a higher bracket only changes the rate on the dollars above that threshold - everything below it is taxed exactly as it was before.
Marginal vs. Effective Tax Rate
Your marginal rate is the tax on your last dollar earned - the highest bracket you reach. Your effective rate is your total tax divided by your total income, and it's always lower because most of your income was taxed in cheaper brackets on the way up.
Use your marginal rate when weighing decisions like whether an extra 401(k) contribution is worth it. Use your effective rate when you want an honest picture of what taxes cost you overall.
Deductions and Credits
A deduction shrinks the income that gets taxed. A credit cuts your tax bill directly, dollar for dollar - which makes a credit more valuable than a deduction of the same size. Most filers take the standard deduction, a flat amount based on filing status, rather than itemizing individual expenses like mortgage interest and charitable gifts.
The right move is simple: add up what you could itemize, compare it to the standard deduction, and take the bigger number.
FICA: The Tax People Forget
Social Security and Medicare taxes (together called FICA) come out of every paycheck before income tax even enters the picture. Employees pay 6.2% toward Social Security on wages up to an annual cap, plus 1.45% for Medicare with no cap - and your employer matches both.
If you're self-employed, you cover both halves yourself, though you get to deduct the employer portion. Either way, FICA is a real cost worth including when you estimate take-home pay.
State Income Taxes
State taxes vary enormously. A handful of states charge no income tax on wages at all, some use a single flat rate, and others run progressive brackets that can add meaningfully to your total bill.
Keep in mind that no-income-tax states often make up the difference elsewhere - higher sales taxes or property taxes are common. Select your state above to see how it changes the picture.
Why Withholding Rarely Matches Your Bill
Your employer withholds tax from each paycheck based on your W-4, but it's only an estimate. Side income, a second job, a working spouse, or big bonuses can all throw it off - which is how people end up owing money in April despite paying taxes all year.
A large refund isn't a win either; it just means you gave the government an interest-free loan. Running your numbers here once or twice a year helps you adjust your W-4 before surprises pile up.
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Frequently Asked Questions
What's the difference between marginal and effective tax rate?
Your marginal rate is the rate charged on your last dollar of income - the top bracket you reach. Your effective rate is total tax divided by total income, and it's always lower because your earlier dollars were taxed at lower rates. The effective rate is the better measure of what you actually pay.
Will a raise push me into a higher tax bracket and cost me money?
No - this is probably the most common tax myth. Only the dollars above a bracket threshold get taxed at the higher rate. Everything below is taxed the same as before, so a raise always increases your take-home pay. The rare exceptions involve income limits on certain credits, not the brackets themselves.
What is FICA tax and why is it taken from my paycheck?
FICA funds Social Security and Medicare. Employees pay 6.2% toward Social Security (up to an annual wage cap) and 1.45% for Medicare (no cap), and employers match both amounts. It comes out of every paycheck regardless of your deductions, which is why gross pay and take-home pay differ so much.
Should I take the standard deduction or itemize?
Take whichever is larger. The standard deduction is a flat amount based on your filing status. Itemizing means adding up specific expenses - mortgage interest, state and local taxes, charitable donations, large medical bills. Since the standard deduction is fairly generous, most filers come out ahead just taking it.
Which states have no income tax?
Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming don't tax wages. Before you pack the moving truck, though, remember these states typically raise revenue through higher sales taxes, property taxes, or other fees instead.
Why do I owe taxes when my employer already withholds them?
Withholding is just an estimate based on your W-4. Freelance income, a second job, a working spouse, investment gains, or an outdated W-4 can all cause under-withholding. If you owe every year, update your W-4 or make quarterly estimated payments to close the gap.
How can I lower my taxable income?
Pre-tax contributions are the biggest lever for most people: traditional 401(k) contributions, HSA contributions, and traditional IRA contributions (if you qualify) all reduce taxable income directly. FSAs and dependent care accounts help too. These reduce the income tax you owe without you spending a dollar more than you would have anyway.
What's the difference between a tax deduction and a tax credit?
A deduction reduces the income that gets taxed, so it's worth your marginal rate - a $1,000 deduction at a 22% marginal rate saves $220. A credit reduces the tax bill itself, so a $1,000 credit saves the full $1,000. Credits win every time, dollar for dollar.