Free tools for the self-employed and 1099 contractors: estimate your self-employment tax, total tax owed, quarterly estimated payments, and whether an S-corp would save you money.
The four numbers every freelancer needs.
Your SE tax (Social Security + Medicare) and the deductible half.
Open calculator →Total tax on 1099 income, SE tax plus federal income tax.
Open calculator →Your four estimated quarterly payments.
Open calculator →How much an S-corp election could save you.
Open calculator →Work for yourself and you owe the full 15.3% self-employment tax on top of income tax, and the IRS wants it quarterly. These tools turn that into clear numbers so April never surprises you.
Authoritative U.S. government sources for further reading and to verify the figures on this page: