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Both calculators run independently — change the inputs on either side to compare results.

Business Tax Calculator

Estimate your business tax liability based on entity type — C-corp, S-corp, or sole proprietorship — after accounting for expenses, depreciation, and the 20% QBI deduction. Use this when planning quarterly payments or year-end tax strategy.

Gross Business Revenue ($)

Total Business Expenses ($)

Business Entity Type

Qualified Business Income Deduction

Depreciation Deduction ($)

Fill in the required fields to see your result.

Taxes

Payroll Tax Calculator

Calculates the combined US federal payroll tax (Social Security plus Medicare, jointly known as FICA) owed on a given block of wages, using the specified employee-side rates. Useful for paycheck planning, comparing self-employment to W-2 take-home, and verifying that an employer has withheld the correct FICA amount.

Wages ($)

Social Security Rate (%)

Medicare Rate (%)

Fill in the required fields to see your result.

Key differences

	Business Tax Calculator	Payroll Tax Calculator
Category	Taxes	Taxes
Inputs required	5	3
Result	Total Business Tax Liability ($)	Total Payroll Tax ($)
What it does	Estimate your business tax liability based on entity type — C-corp, S-corp, or sole proprietorship — after accounting for expenses, depreciation, and the 20% QBI deduction. Use this when planning quarterly payments or year-end tax strategy.	Calculates the combined US federal payroll tax (Social Security plus Medicare, jointly known as FICA) owed on a given block of wages, using the specified employee-side rates. Useful for paycheck planning, comparing self-employment to W-2 take-home, and verifying that an employer has withheld the correct FICA amount.