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Both calculators run independently — change the inputs on either side to compare results.
Taxes
Self-Employment Tax Calculator
Calculate self-employment tax — the Social Security and Medicare contributions that self-employed people pay on net business earnings, equivalent to both the employee and employer share of FICA combined. Use it to estimate quarterly tax payments and plan for the SE tax liability that's often the biggest tax surprise for new freelancers and business owners.
Fill in the required fields to see your result.
Financial
Tax Bracket Calculator
Estimate the percentage of your gross income that remains taxable after applying deductions. Use it as a rough proxy for tax exposure — though it does not compute the actual US federal income tax (which is progressive across brackets, not a single flat rate).
Fill in the required fields to see your result.
Key differences
| Self-Employment Tax Calculator | Tax Bracket Calculator | |
|---|---|---|
| Category | Taxes | Financial |
| Inputs required | 1 | 2 |
| Result | Self-Employment Tax ($) | Effective Tax Rate (%) |
| What it does | Calculate self-employment tax — the Social Security and Medicare contributions that self-employed people pay on net business earnings, equivalent to both the employee and employer share of FICA combined. Use it to estimate quarterly tax payments and plan for the SE tax liability that's often the biggest tax surprise for new freelancers and business owners. | Estimate the percentage of your gross income that remains taxable after applying deductions. Use it as a rough proxy for tax exposure — though it does not compute the actual US federal income tax (which is progressive across brackets, not a single flat rate). |