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Small Business Tax Calculator

Estimate taxes for pass-through business entities.

United StatesCorporate TaxLast updated: July 28, 2026

Overview

This calculator helps you estimate your tax liability. Enter your details below for an estimate based on current tax rules.

Calculator Input

Your calculation results will appear here.

Enter your details above and click Calculate to see your estimated tax.

Example Calculation

$100,000 Taxable Income, C-Corp, 2025

Taxable Income:100000
Entity Type:c_corp
Tax Year:2025

Result

Corporate Tax:$21,000.00
After-Tax Income:$79,000.00
Effective Rate:21%

C-Corp pays 21% entity-level tax.

Calculation Methodology

Pass-Through

Income passes to owners — taxed at individual rates

S-corps and LLCs

C-Corp Tax

Taxable Income x 21%

Flat federal corporate tax rate

How to Use

Estimate taxes for pass-through business entities.

Understanding Results

Corporate Tax: 0% for pass-through.

Formula

Pass-through entities are not taxed at the entity level.

Example Calculation

Example: with an annual income of $50,000, the estimated tax would be calculated using the applicable rates. Use the calculator above for your specific situation.

Benefits of Using This Calculator

  • Instant tax estimates
  • Up-to-date rates
  • Easy to use
  • Helps with financial planning

Limitations

  • This is an estimate only
  • Does not cover all deductions or credits
  • Tax laws change frequently
  • Consult a professional for complex situations

Tax Slabs

C-Corp: 21% flat. Pass-through: taxed at individual rates.

Common Mistakes

  • Confusing entity-level and owner-level tax.

Frequently Asked Questions

What is the standard tax rate?
Rates vary by income level and jurisdiction.
How accurate is this calculator?
This calculator provides estimates based on current tax rules. For precise calculations, consult a tax professional.

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Suggested Articles

Income Tax Guide

Payroll Tax Guide

Capital Gains Tax Guide

Related Country

Explore tax calculators for other countries.

Official Resources

IRS

Educational Disclaimer

This calculator is for informational and educational purposes only. It does not constitute legal or tax advice. Always consult a qualified professional.