Calculator Comparison

Business Income Tax Calculator vs Self-Employment Tax Calculator

Not sure which calculator to use? Here's a side-by-side comparison of the Business Income Tax Calculator and Self-Employment Tax Calculator to help you pick the right one for your needs.

Business Income Tax Calculator

Tax

Estimate your business income tax based on entity type, revenue, expenses, and deductions. Compare tax liability across different business structures.

What you enter

Gross Revenue
Total Business Expenses
Business Entity Type

What you get

Estimated Tax(primary)
Net Profit
Effective Tax Rate
After-Tax Income

Includes visual pie chart breakdown

Use Business Income Tax Calculator

Self-Employment Tax Calculator

Tax

Calculate your self-employment tax (Social Security and Medicare) as a freelancer, contractor, or small business owner.

What you enter

Net Self-Employment Income
Other W-2 Income
Filing Status

What you get

Self-Employment Tax(primary)
Social Security (12.4%)
Medicare (2.9%)
Deductible Portion (50%)

Use Self-Employment Tax Calculator

Key Differences

Feature	Business Income Tax Calculator	Self-Employment Tax Calculator
Category	Tax	Tax
Inputs	3 required fields	3 required fields
Outputs	4 results	4 results
Chart	pie chart	No chart
FAQs	3 answered	3 answered

Input Comparison

Only in Business Income Tax Calculator

Gross Revenue
Total Business Expenses
Business Entity Type
Owner Salary (S-Corp only)

Only in Self-Employment Tax Calculator

Net Self-Employment Income
Other W-2 Income
Filing Status

Which Calculator Should You Use?

Use the Business Income Tax Calculator if you need to:

Calculate estimated tax
When you know your gross revenue and total business expenses
Want a visual pie chart breakdown

Use the Self-Employment Tax Calculator if you need to:

Calculate self-employment tax
When you know your net self-employment income and other w-2 income

Frequently Asked Questions

What is the corporate tax rate?

C-Corporations pay a flat 21% federal income tax rate on taxable income. Pass-through entities (sole proprietorships, LLCs, S-Corps) pay tax at the owner's individual rate. The 20% QBI deduction can reduce the effective rate for pass-through income.

How are S-Corps taxed differently?

S-Corp profits pass through to owners' personal returns, avoiding corporate double taxation. Owners pay themselves a 'reasonable salary' (subject to payroll tax), and remaining profits are distributed without self-employment tax. This can save 15.3% SE tax on distributions.

What is self-employment tax?

Self-employment tax is 15.3% (12.4% Social Security + 2.9% Medicare) applied to 92.35% of your net self-employment income. It's the self-employed equivalent of FICA taxes that employers normally split.

Can I deduct self-employment tax?

Yes, you can deduct 50% of your self-employment tax on your Form 1040 as an adjustment to income. This reduces your adjusted gross income, lowering your overall income tax.

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Bottom Line

Choose the Business Income Tax Calculator if you need to calculate estimated tax. Use the Self-Employment Tax Calculator if you need to calculate self-employment tax. Both calculators are free and require no sign-up.

Use Business Income Tax Calculator Use Self-Employment Tax Calculator

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