How much self-employment tax will I owe in New Jersey?

Self-employment tax is federal, not state, the rate is 15.3% (12.4% Social Security + 2.9% Medicare) on 92.35% of your net self-employment income. On top of that you'll owe federal income tax and, if applicable, New Jersey state income tax. Enter your net income above to see the full breakdown.

Do I have to pay quarterly estimated taxes?

If you expect to owe $1,000 or more in federal tax for the year, yes, the IRS wants estimated payments on April 15, June 15, September 15, and January 15. Many states with income tax require the same. Missing a quarter triggers an underpayment penalty even if you pay in full by April.

Can I deduct half of my self-employment tax?

Yes. The employer-equivalent half of your SE tax (7.65% of the SE base) is deductible from your adjusted gross income. This calculator applies that deduction automatically before computing federal and state income tax.

Is this calculator accurate enough for filing?

It is an estimate, good for quarterly planning, pricing your rates, and setting aside tax reserves. For your actual return, use tax software or a CPA; individual credits, deductions, and multi-state work can shift the final number materially.

What is the New Jersey income tax rate for freelancers in 2026?

New Jersey uses graduated Gross Income Tax rates from 1.4% to 10.75%. This calculator estimates the state component after a $1,000 single-filer taxpayer exemption.

Does New Jersey charge a separate self-employment tax?

No. New Jersey does not add a separate state self-employment tax like federal Social Security and Medicare. Freelancers may owe New Jersey Gross Income Tax and federal self-employment tax.

New Jersey Self-Employment Tax Calculator