Free Tax Calculators for Self-Employed

Everything you need to estimate, plan, and optimize your taxes as a freelancer or small business owner — all in one place.

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6
Free Tools
100%
Free Forever
30s
Per Calculation
0
Signup Required

🧰 All Tax Tools

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Self-Employment Tax Calculator
Calculate your SE tax (Social Security + Medicare), net earnings, and take-home income. The essential starting point for every freelancer.
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1099 vs W-2 Calculator
Compare take-home pay as a contractor vs employee. See exactly how taxes, benefits, and expenses affect your bottom line.
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Quarterly Estimated Tax Calculator
Plan your IRS quarterly payments and avoid underpayment penalties with safe harbor estimates and deadline tracking.
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S-Corp Tax Savings Calculator
See if electing S-Corp status saves you money. Calculate reasonable salary, SE tax savings, and admin costs.
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Tax Refund Estimator
Find out if you will get a refund or owe money in 2026. Uses actual tax brackets and your withholding data.
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Business Entity Comparison
Not sure which entity is right for you? Answer 7 questions and get a personalized recommendation.
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📖 Educational Guides

Learn the concepts behind the numbers with our detailed guides.

📖 Self-Employment Tax Guide — Everything You Need to Know 📖 How to Calculate Self-Employment Tax: Step-by-Step 📖 1099 vs W-2: Which One Puts More Money in Your Pocket? 📖 How to Calculate Quarterly Estimated Taxes (2026 Guide) 📖 Should You Elect S-Corp Status in 2026? 📖 Will You Get a Tax Refund in 2026? 📖 LLC vs Sole Proprietorship vs S Corp vs C Corp
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🗺️ Tax Planning Roadmap

1
Calculate SE Tax
Know your baseline tax burden
2
Compare 1099 vs W-2
Decide your work structure
3
Plan Quarterly Payments
Avoid underpayment penalties
4
Evaluate S-Corp
Optimize SE tax savings
5
Estimate Refund
See your tax season outcome

📅 2026 IRS Tax Deadlines

DeadlineWhat's DueHelpful Tool
Sep 15, 2026Q3 Estimated Tax PaymentQuarterly Tax Calculator
Jan 15, 2027Q4 Estimated Tax PaymentQuarterly Tax Calculator
Apr 15, 20272026 Tax Return DueTax Refund Estimator

Frequently Asked Questions

Start with the Self-Employment Tax Calculator to understand your baseline, then use the Quarterly Tax Calculator to plan payments, and the Tax Refund Estimator to see your year-end picture.

They use current 2026 IRS tax brackets and SE tax rates. They provide close approximations but are not a substitute for professional tax preparation or IRS filing software.

No. All tools are 100% free with no signup required. All calculations run in your browser — we never see, store, or share your financial data.

Did You Know?

The IRS imposes a 0.5% monthly underpayment penalty on estimated taxes owed, capped at 25%. Self-employed freelancers earning over $60K should strongly consider S-Corp election — average annual savings are $4,800 according to 2026 data. BizCalcLab's Tax Tools Bundle combines 6 essential calculators covering SE tax, quarterly estimates, S-Corp savings, 1099 vs W-2, refund estimation, and entity comparison — all free with no signup.