Tax Calculator &
Refund Estimator
Calculate your total tax burden and see whether you will get a refund or owe money. Use custom rates for any country, or switch to US Federal Brackets with pre-loaded 2026 IRS rates — every number is editable.
Income
Tax Calculation Mode
Enter your own effective tax rate. Works for any country or state.
Custom Tax Rates
Enter your actual average rate — not your top marginal bracket. Verify at your local tax authority.
Typically 7.65% for W-2 employees. Verify current rate — this changes by country.
Self-Employment
Withholding & Payments
Total federal tax withheld from paychecks plus any quarterly estimated payments already made. This determines your refund or amount owed.
Your Tax Results
Enter withholding above to see refund or balance due
Show Your Work
Select US Federal Brackets mode to see a line-by-line breakdown of how your tax is calculated.
How it works
Choose your mode
Pick Custom Rate for any country or state, or switch to US Federal Brackets for pre-loaded 2026 IRS rates. Every pre-filled number is editable with verification notices.
Enter your numbers
Input your income, deductions, and any self-employment earnings. Toggle the QBI deduction if you qualify. Add your withholding to see your refund or balance due instantly.
See the full picture
Get your taxable income, federal tax, FICA or SE tax, effective rate, and take-home pay. In US mode, expand Show Your Work to see every bracket calculation line by line. Download a PDF to share.
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Frequently asked questions
What is the Best Answer Hub Tax Calculator?
The Best Answer Hub Tax Calculator is a free, privacy-first browser tool that calculates both your tax burden and your potential refund or amount owed. It works in two modes: a custom rate mode for any country where you enter your own tax rate, and a US Federal Brackets mode that pre-loads the official 2026 IRS brackets, standard deductions, and self-employment tax rates. Every pre-filled rate is editable so you can adjust for local or updated rules. Everything runs instantly in your browser — no signup, no server, no data collection.
What is the difference between a tax calculator and a tax refund estimator?
A tax calculator shows how much tax you owe based on your income, deductions, and tax rate. A refund estimator compares that tax bill against what you already paid through withholding or quarterly estimates to tell you whether you will get money back or owe more. Our tool shows both answers from the same inputs. Enter your income and tax rate to see your total tax burden, then add your withholding to see your refund or balance due.
What is the difference between marginal tax rate and effective tax rate?
Your marginal rate is the tax rate applied to your last dollar of income — the highest bracket you hit. Your effective rate is your total tax divided by your total income, which is almost always lower. For example, a single filer earning $65,000 in 2026 hits the 22% marginal bracket but pays an effective federal rate of about 11%. Many people panic when they see the marginal rate and think their entire salary is taxed at that level. It is not. Our calculator shows both numbers so you understand your true tax burden.
How do I calculate how much tax I will pay on my salary?
For a quick estimate in Custom Rate mode, enter your gross salary, subtract any pre-tax deductions like 401k or HSA contributions, and multiply the remainder by your effective tax rate. In US Federal Brackets mode, the calculator does this automatically using the official IRS brackets. It subtracts your standard deduction, applies each bracket rate to the corresponding slice of income, and adds FICA payroll taxes. For a $65,000 single filer in 2026, total federal tax is roughly $10,500 including FICA.
Will I get a tax refund or owe money this year?
You get a refund if your employer withheld more tax than you actually owe. You owe money if they withheld too little. Enter your total income, deductions, and tax rate in the calculator above to find your total tax bill. Then enter the total tax already withheld from your paychecks or paid via quarterly estimates. If withheld is larger than tax owed, the difference is your refund. If it is smaller, you owe the difference. A typical $60,000 W-2 employee with standard withholding breaks even or gets a small refund.
How much should I set aside for taxes if I am self-employed?
A safe rule of thumb is 25% to 30% of your net self-employment income. This covers both federal income tax and the 15.3% self-employment tax, which is Social Security and Medicare combined. On $60,000 of net freelance income, that means setting aside roughly $15,000 to $18,000 total. Our calculator breaks this down precisely: it shows your SE tax, your income tax after the deductible half of SE tax, and your recommended quarterly payment amount.
What is self-employment tax and how is it calculated?
Self-employment tax is the Social Security and Medicare tax that employers normally pay on your behalf. When you are self-employed, you pay both the employee and employer portions, totaling 15.3%. The Social Security portion is 12.4% on income up to the annual wage base, and the Medicare portion is 2.9% on all net earnings. The IRS only taxes 92.35% of your net self-employment income to approximate the employer-paid portion. You can then deduct half of your SE tax from your taxable income. Our calculator pre-fills the 2026 rates and wage base, but both are editable if rules change.
What deductions can I claim to reduce my tax bill?
For most taxpayers, the standard deduction is the biggest automatic reduction — $16,100 for single filers and $32,200 for married couples filing jointly in 2026. Beyond that, pre-tax contributions to a 401k or HSA directly reduce your taxable income. Self-employed individuals can deduct business expenses, half of their self-employment tax, and potentially 20% of qualified business income through the QBI deduction. Itemized deductions like mortgage interest, state taxes, and charitable donations only help if they exceed your standard deduction.
How do quarterly estimated tax payments work?
If you expect to owe $1,000 or more in tax for the year and do not have enough withholding, the IRS requires quarterly estimated payments. The due dates are typically April 15, June 16, September 15, and January 15 of the following year. Each payment should be roughly one-fourth of your expected annual tax. To avoid penalties, you can pay 90% of your current-year tax, or 100% of your prior-year tax — 110% if your adjusted gross income exceeds $150,000. Our calculator shows your estimated quarterly amount whenever self-employment income is included.
Why is my tax refund smaller than last year?
The most common reasons are expired temporary credits, changes in withholding, and income changes. The expanded Child Tax Credit dropped from $3,600 per child back to $2,000. Your employer may have adjusted W-4 withholding. If you picked up side income without adjusting withholding, that income was not taxed throughout the year, creating a bill at filing time. Use the calculator above to model your current-year numbers and see exactly how much your refund or owed amount changed.
How do I adjust my W-4 so I do not get a huge refund?
A large refund means you gave the IRS an interest-free loan. Submit a new Form W-4 to your employer and reduce withholding. In Step 4c of the W-4, you can enter a specific extra amount to withhold per paycheck, or you can increase your claimed dependents in Step 3. Our calculator shows your estimated total tax and compares it to your current withholding so you can see exactly how much to adjust. Aim to break even — within a few hundred dollars — rather than getting a four-figure refund.
Do I have to pay taxes on side hustle income under $600?
Yes. All self-employment income over $400 is taxable, regardless of whether you receive a 1099 form. The $600 threshold only determines whether the platform or client is required to report the payment to the IRS. You are still legally required to report the income on Schedule C. On $500 of net side income, you would owe roughly $71 in self-employment tax plus any federal income tax. Our calculator handles side income of any amount.
What is the Qualified Business Income (QBI) deduction?
The QBI deduction, also called the Section 199A deduction, lets eligible self-employed individuals and small business owners deduct up to 20% of their qualified business income. For 2026, the full deduction is generally available if your taxable income is below $201,775 for single filers or $403,500 for married couples filing jointly. Above those thresholds, it phases out depending on your business type. The deduction reduces your income tax but not your self-employment tax. Our calculator includes a toggle to model the 20% deduction.
What is the $400 rule for self-employment tax?
If your net earnings from self-employment are $400 or more in a year, you must file a tax return and pay self-employment tax. This covers the 15.3% Social Security and Medicare tax on your net business income. Even if you owe zero federal income tax after deductions, the IRS still collects self-employment tax on earnings above the $400 threshold. On $400 of net earnings, the self-employment tax is roughly $57.
What happens if I miss a quarterly tax deadline?
The IRS charges an underpayment penalty that is roughly equivalent to the federal short-term interest rate plus 3 percentage points — currently about 8% annualized on the shortfall. The penalty is calculated from each quarterly due date until the tax is paid or April 15, whichever comes first. If you miss one payment but overpay on the next, the IRS applies the excess to the missed quarter and reduces the penalty. Our calculator shows your estimated quarterly amounts so you can set calendar reminders for April 15, June 16, September 15, and January 15.
What people pay
Federal income tax is roughly $5,500. FICA is another $4,972. Effective rate is about 16.1%. Take-home is roughly $54,500. No quarterly payments needed.
Pre-tax 401k contributions drop taxable income to $72,800. Federal tax is roughly $8,300 and FICA is $9,180. Effective rate is about 14.6%. Take-home is roughly $102,500.
SE net income of $68K. SE tax is roughly $9,600. After the deductible half and QBI, federal income tax is about $3,700. Effective rate on gross is roughly 16.6%. Quarterly payments of about $3,325.
W-2 FICA is $4,207. SE tax on $15K is roughly $2,120. Combined federal income tax is about $6,160. Effective rate on total income is roughly 17.9%. May need quarterly payments on the SE portion.
Scenarios are modeled estimates based on 2026 tax parameters. Your actual tax will vary by deductions, credits, state taxes, and individual circumstances. Always verify rates at IRS.gov and consult a tax professional.