What you owe on 1099 income
Income reported on a 1099 has no tax taken out. You owe three things on the profit, which is income minus business expenses:
- Self-employment tax of 15.3%. This covers Social Security and Medicare, both the employee and employer halves, on 92.35% of profit.
- Federal income tax. Figured with the 2026 brackets after the standard deduction and the deduction for half of your self-employment tax.
- State income tax. New Jersey and New York use the 2026 rate schedules; for another state, enter its flat rate.
How to use the "set aside" percentage
The set-aside figure is your total estimated tax divided by your 1099 income. Move that share of every client payment into a separate savings account, and use it to make quarterly estimated payments. Try the quarterly estimated tax calculator for the payment dates and the amount that avoids an underpayment penalty.
What this estimate leaves out
- The qualified business income (QBI) deduction, itemized deductions and tax credits. They can lower your tax, so the estimate errs high.
- Other income such as a W-2 job or a spouse's wages. Those change your bracket and the Social Security wage base. Use the quarterly calculator if you have them.
- New York figures are an estimate. This uses a simplified estimating schedule: the full return also adds an extra charge for higher incomes (the tax-benefit recapture).
Also useful
- CalculatorQuarterly estimated tax calculatorYour four 2026 estimated payments and their due dates, federal and NJ/NY, with the amount that avoids an underpayment penalty.
- CalculatorMileage deduction calculatorBusiness miles times the 2026 IRS standard rates, including the July rate change.
- CalculatorHome office deduction calculatorCompare the simplified ($5 per sq ft) and regular home office methods.
Sources
- IRS: Self-employment tax (Social Security and Medicare taxes)
- IRS: Form 1040-ES, Estimated Tax for Individuals (2026)
- Social Security Administration: Contribution and benefit base
- IRS Rev. Proc. 2025-32: 2026 inflation-adjusted tax figures
- NJ Division of Taxation: NJ-1040-ES instructions
- NY Tax Department: IT-2105 estimated tax instructions (2026)
Facts checked against the sources above as of October 20, 2026. Educational information, not tax or legal advice. Results are estimates based on the information you enter; your situation may differ. Using this tool doesn't create a client relationship.