Freelance Income
Self-Employment Tax
Calculate your SE tax obligation and the deductible portion that reduces your adjusted gross income.
Self-employment tax
$0
Social Security + Medicare on SE income
Deductible half
$0
Net SE tax impact
$0
SE tax: gross vs net after deduction
💡 SE tax insight
Self-Employment Tax Calculator
The Self-Employment Tax Calculator quantifies what self-employment tax actually costs you after the deduction for the employer-half portion. You enter your net self-employment income, any W-2 income that has already paid into Social Security, and your marginal income tax bracket. The calculator returns the gross SE tax, the deductible half, and the net SE tax impact after the income tax savings on the deduction. Use it during quarterly tax planning. The biggest misunderstanding is that SE tax replaces, rather than adds to, regular income tax; it does not. SE tax is on top of federal and state income tax, and treating it that way during cash planning prevents the most common freelance underpayment mistake.