Finance calculators

Federal Income Tax Calculator

Updated Sep 7, 2026 By Jehan Wadia
Rate Formulas
Tax Year 2025 — Federal Income Tax Only
Your Tax Details
Income
Enter your total wages, salary, and other ordinary income before any deductions.
Filing Status
Your status sets your tax brackets and your standard deduction amount.
Deduction
Standard deduction for your filing status: $15,750.00
Pre-Tax Contributions & Adjustments
Annual pre-tax contributions to your employer-sponsored retirement plan.
Annual contributions to a traditional IRA (subject to IRS limits).
HSA/FSA contributions, student loan interest, alimony (pre-2019), or other above-the-line deductions.
Dependents & Credits
Dependents may affect eligibility for the Child Tax Credit and other credits.
Enter the total dollar value of credits you qualify for, such as the Child Tax Credit, Earned Income Credit, or Education Credits. Credits directly reduce your tax bill.
Estimated Child Tax Credit: $2,200.00 — adjust if needed.
Withholding
Find this on your most recent pay stub under “Federal Income Tax Withheld.” This is used to estimate your refund or balance due.
Your 2025 Federal Tax Estimate

Estimated Federal Income Tax $0.00
Estimated Annual Take-Home Pay $0.00
Estimated Refund / Balance Due $0.00
Effective Federal Tax Rate 0.00%

Detailed Tax Breakdown

Federal income tax and FICA components for tax year 2025.
Tax Component Marginal Rate Amount
Federal Tax Bracket Breakdown
How your taxable income is taxed bracket by bracket.
Bracket Rate Income Taxed in This Bracket Tax for This Bracket
This is how progressive tax brackets work — only the income within each bracket range is taxed at that bracket’s rate.
Calculation Summary
Step-by-step derivation of your taxable income.
Where Your Gross Income Goes
Text alternative for the income allocation donut chart
SegmentAmountPercent of gross income
Step-by-Step Solution

Introduction

This free Federal Income Tax Calculator shows what you may owe the IRS for tax year 2025. Enter your income, filing status, and a few other details. It returns your federal tax, take-home pay, and refund or balance due.

The tool uses the 2025 tax brackets and the new standard deduction amounts. It also works out your FICA taxes for Social Security and Medicare. You can add 401(k) and IRA contributions, dependents, tax credits, and the federal tax already taken from your paychecks.

Your results come with a full breakdown. See how each tax bracket is applied, how your taxable income is found step by step, and where every dollar of your pay goes. Use it to plan ahead, check your withholding, or just understand your paycheck better.

How to use our Federal Income Tax Calculator

Enter your income, filing status, deductions, pre-tax savings, dependents, credits, and tax withheld. The calculator shows your 2025 federal income tax, FICA taxes, take-home pay, effective tax rate, tax bracket breakdown, and your estimated refund or balance due.

Gross Annual Income: Type your total pay for the year before any taxes or deductions come out. Include wages, salary, bonuses, and other regular income.

Filing Status: Pick how you file your tax return: Single, Married Filing Jointly, Married Filing Separately, Head of Household, or Qualifying Surviving Spouse. This sets your tax brackets and standard deduction.

Deduction: Choose Standard Deduction to use the set amount for your filing status. Choose Itemized Deduction if you write off things like mortgage interest, state taxes, and gifts to charity.

Total Itemized Deductions: If you picked itemized, type the total of your Schedule A write-offs. The calculator uses the standard deduction instead if it is bigger.

401(k) / 403(b) Contribution: Enter what you put into your work retirement plan this year before taxes. This lowers your taxable income.

Traditional IRA Contribution: Enter what you paid into a traditional IRA this year. Keep it within the IRS limit.

Other Pre-Tax Deductions: Add HSA or FSA money, student loan interest, and other above-the-line deductions. HSA and FSA amounts also lower your FICA wages.

Number of Qualifying Dependents: Use the plus and minus buttons to set how many dependents you claim. The tool then estimates your Child Tax Credit.

Federal Tax Credits: Enter the total dollar value of your credits, like the Child Tax Credit, Earned Income Credit, or education credits. Credits cut your tax bill dollar for dollar.

Federal Tax Already Withheld: Enter the federal income tax taken out of your pay so far this year. You can find it on your latest pay stub. This shows if you get a refund or owe money.

Calculate and Reset: Results update as you type, but you can click Calculate to refresh them. Click Reset to start over with the default numbers.

What Is Federal Income Tax?

Federal income tax is the money you pay the U.S. government each year based on what you earn. The IRS collects it. Most workers pay it a little at a time through paycheck withholding, then file a tax return to settle up. If you paid too much, you get a refund. If you paid too little, you owe the rest.

How Tax Brackets Work

The U.S. uses a progressive tax system. That means your income is sliced into pieces, and each piece is taxed at its own rate. You do not pay your top rate on every dollar you earn.

For 2025, the rates are 10%, 12%, 22%, 24%, 32%, 35%, and 37%. If you are single with $60,000 in taxable income, the first $11,925 is taxed at 10%, the next chunk at 12%, and only the last part at 22%. Your marginal rate is the rate on your last dollar. Your effective rate is the average rate you really pay, and it is always lower.

Steps to Find Your Tax

  1. Start with gross income. All your wages, salary, and other pay.
  2. Subtract pre-tax items. 401(k) and 403(b) contributions, traditional IRA deposits, HSA or FSA money, and other above-the-line deductions. What is left is your Adjusted Gross Income (AGI).
  3. Subtract your deduction. Either the standard deduction or your itemized total, whichever is bigger. What is left is your taxable income.
  4. Apply the brackets to taxable income to get your raw tax.
  5. Subtract tax credits to get your final federal income tax.

2025 Standard Deduction

The standard deduction is a flat amount that lowers your taxable income. For tax year 2025 it is:

  • Single or Married Filing Separately: $15,750
  • Married Filing Jointly or Qualifying Surviving Spouse: $31,500
  • Head of Household: $23,625

You can instead itemize things like mortgage interest, state and local taxes, and charity gifts. Only do that if your itemized total is larger. Most people take the standard deduction.

Deductions vs. Credits

A deduction lowers the income you are taxed on. A credit lowers your tax bill dollar for dollar, so credits are worth more. The Child Tax Credit is worth up to $2,200 per qualifying child for 2025. It starts to shrink once your income passes $400,000 (joint filers) or $200,000 (everyone else). Other common credits include the Earned Income Tax Credit and education credits.

FICA Taxes Are Separate

Your paycheck also has FICA payroll taxes, which fund Social Security and Medicare. These are not income tax, but they still come out of your pay:

  • Social Security: 6.2% on the first $176,100 of wages in 2025.
  • Medicare: 1.45% on all wages, plus an extra 0.9% on wages above $200,000 ($250,000 if married filing jointly, $125,000 if married filing separately).

401(k) and IRA contributions lower your income tax but not your FICA tax. HSA, FSA, and other Section 125 plan deductions do lower both.

Refund or Balance Due

Your employer sends money to the IRS from each paycheck. Compare that year-to-date withholding to your real tax. Withheld more than you owe? You get a refund. Withheld less? You owe the difference by the April filing deadline. If your refund or bill is big, you can change your withholding by giving your employer a new Form W-4.

Things This Estimate Does Not Cover

This is a federal estimate only. It does not include state or local income tax, self-employment tax, capital gains rates, the Alternative Minimum Tax, or special rules for some kinds of income. Use it to plan, then check with a tax pro or the IRS before you file.

Formulas used

Adjusted Gross Income (AGI)
\text{AGI} = \max\left(0,\ \text{Gross Income} - (\text{401(k)} + \text{IRA} + \text{Other Pre-Tax})\right)
Taxable Income
\text{Taxable Income} = \max\left(0,\ \text{AGI} - \max(\text{Itemized},\ \text{Standard Deduction})\right)
Progressive Bracket Tax
\text{Tax} = \sum_{i} \left[\min(\text{Taxable},\ \text{hi}_i) - \text{lo}_i\right] \times r_i \quad \text{for all brackets where Taxable} > \text{lo}_i
Federal Income Tax After Credits
\text{Federal Income Tax} = \max\left(0,\ \text{Tax} - \text{Credits}\right)
Estimated Child Tax Credit
\text{CTC} = \max\left(0,\ 2200 \times D - 50 \times \left\lceil \frac{\max(0,\ \text{AGI} - T)}{1000} \right\rceil \right)
FICA Taxes (Social Security + Medicare)
\begin{aligned} W &= \max(0,\ \text{Gross} - \text{Other Pre-Tax}) \\ \text{FICA} &= \min(W,\ 176100) \times 0.062 + W \times 0.0145 + \max(0,\ W - T_M) \times 0.009 \end{aligned}
Effective Federal Tax Rate
\text{Effective Rate} = \frac{\text{Federal Income Tax}}{\text{Gross Income}} \times 100\%
Take-Home Pay and Refund / Balance Due
\begin{aligned} \text{Take-Home} &= \text{Gross} - (\text{Federal Tax} + \text{FICA}) - \text{Pre-Tax} \\ \text{Balance} &= \text{Withheld} - \text{Federal Tax} \end{aligned}

Frequently asked questions

What are the 2025 federal income tax brackets?

For tax year 2025, single filers pay:

  • 10% on taxable income up to $11,925
  • 12% from $11,925 to $48,475
  • 22% from $48,475 to $103,350
  • 24% from $103,350 to $197,300
  • 32% from $197,300 to $250,525
  • 35% from $250,525 to $626,350
  • 37% above $626,350

Married filing jointly uses double the single amounts up to the 35% step: $23,850, $96,950, $206,700, $394,600, $501,050, and $751,600. Head of household brackets start at $17,000 and $64,850, then match the single amounts.

When are 2025 federal taxes due?

Your 2025 tax return and any tax you owe are due April 15, 2026. You can ask for a six-month extension to file, which moves the paperwork deadline to October 15, 2026. An extension does not delay payment. You still have to pay what you owe by April 15 or interest and penalties start.

How much do I have to make to file a federal tax return?

Most people must file once their income passes the standard deduction for their filing status. For 2025 that is about $15,750 for single filers under 65, $31,500 for married filing jointly, and $23,625 for head of household. Married filing separately must file at just $5. If you earned $400 or more from self-employment, you must file no matter what. Even if you are not required to file, you should file to get back any tax that was withheld or to claim refundable credits.

If a raise puts me in a higher tax bracket, will I take home less money?

No. This is the most common tax myth. Only the dollars inside the higher bracket are taxed at the higher rate. If you are single and jump from $48,000 to $52,000 of taxable income, just the amount over $48,475 gets taxed at 22%. Everything below still gets taxed at 10% and 12%. A raise always leaves you with more money in your pocket.

What is the difference between AGI and taxable income?

AGI is your gross income minus above-the-line items like 401(k) money, traditional IRA deposits, HSA money, and student loan interest. Taxable income is your AGI minus your standard or itemized deduction. Tax brackets are applied to taxable income, not AGI. But AGI is what decides if you qualify for many credits and deductions, so both numbers matter.

How much can I put in a 401(k) and an IRA in 2025?

The 2025 employee 401(k) limit is $23,500. If you are 50 or older you can add a $7,500 catch-up, and workers ages 60 to 63 can add $11,250 instead. The traditional IRA limit is $7,000, or $8,000 if you are 50 or older. IRA deductions can be limited if you or your spouse has a plan at work and your income is high.

How much federal income tax will I pay on a $75,000 salary?

A single filer with $75,000 in wages and no pre-tax savings takes the $15,750 standard deduction, leaving $59,250 in taxable income. The tax works out to about $7,949: $1,192.50 at 10%, $4,386 at 12%, and $2,370.50 at 22%. That is a 22% top bracket but only about a 10.6% effective rate on gross pay. FICA taxes of roughly $5,738 come out on top of that.

Who counts as a qualifying child for the Child Tax Credit?

For 2025 the child must be under 17 at the end of the year, be your son, daughter, stepchild, sibling, or a descendant of one of them, and live with you more than half the year. You must provide over half their support, claim them as a dependent, and they need a valid Social Security number. The credit is worth up to $2,200 per child and starts shrinking at $200,000 of income ($400,000 for joint filers).

Is there an extra standard deduction if you are 65 or older?

Yes, and for 2025 there are two. The long-standing age-65 add-on is $2,000 for single or head of household filers and $1,600 per qualifying spouse for married filers. On top of that, a new $6,000 senior deduction is available for each person 65 or older for tax years 2025 through 2028. It phases out once income passes $75,000 ($150,000 for joint filers). Blind filers get an extra amount too.

Are bonuses taxed at a higher rate?

Not really. Bonuses are taxed the same as regular pay at the end of the year. They just get withheld differently. Employers usually hold back a flat 22% of a bonus (37% on amounts over $1 million) plus FICA. If your real tax rate is lower than 22%, you get the extra back as part of your refund when you file.

Is there really no tax on tips and overtime in 2025?

It is a deduction, not a full pass. For 2025 through 2028, workers can deduct up to $25,000 of qualified tips and up to $12,500 of overtime premium pay ($25,000 for joint filers). Both shrink at higher incomes, starting at $150,000 ($300,000 joint). Tips and overtime still count for Social Security and Medicare taxes, and they still show up on your W-2.

Why do I owe taxes this year when I got a refund last year?

Usually your withholding no longer matches your tax. Common causes are a raise or bonus, a second job, a working spouse, self-employment or gig income with no withholding, a child aging out of the Child Tax Credit, or a W-4 that was filled out wrong. Compare the federal tax withheld on your pay stub to your estimated yearly tax, then hand your employer a new Form W-4 to fix it.

How can I lower my federal income tax?

The simplest moves are pre-tax savings. Adding money to a 401(k), a traditional IRA, or an HSA lowers your taxable income dollar for dollar. Also check whether itemizing beats the standard deduction, and make sure you claim every credit you qualify for, such as the Child Tax Credit, the Earned Income Tax Credit, or education credits. Credits cut your bill more than deductions do because they come off the tax itself.

What happens if I owe federal tax and cannot pay it?

File your return on time anyway. The penalty for not filing is 5% of the unpaid tax per month, ten times bigger than the 0.5% per month penalty for paying late. The IRS offers payment plans: a short-term plan gives you up to 180 days, and a long-term installment agreement lets you pay monthly. Interest keeps running until the balance is gone, but a plan stops the harsher collection steps.

How long does a federal tax refund take?

The IRS sends most refunds within 21 days when you e-file and pick direct deposit. Paper returns can take six weeks or more. If you claim the Earned Income Tax Credit or the Additional Child Tax Credit, the law blocks your refund until mid-February. You can track it with the IRS “Where’s My Refund?” tool about 24 hours after e-filing.

Can I file as head of household?

You need to meet three tests. You must be unmarried or considered unmarried on the last day of the year, you must pay more than half the cost of keeping up your home, and a qualifying person, usually your child or another dependent relative, must live with you for more than half the year. Head of household gives you a bigger standard deduction ($23,625 for 2025) and wider brackets than filing single.

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