Tools · Self-Employment Tax
Iowa 1099 Tax Calculator (2026)
Estimate what you owe on 1099 or self-employment income in Iowa for 2026. Enter your income and business expenses to see your self-employment tax, federal income tax, Iowa state income tax, and a rough quarterly payment.
Iowa self-employment tax calculator
- Net profit (income − expenses)
- $60,000
- Self-employment tax (15.3%)
- −$8,478
- Federal income tax
- −$4,511
- Iowa income tax
- −$2,280
- Total estimated tax
- $15,269
Iowa taxes self-employment profit as ordinary income. Iowa finished its move to a flat tax in 2026: all taxable income is taxed at 3.8%. The rate was 8.53% at the top as recently as 2022. Retirement income is exempt for filers 55 and older.
Federal: IRS Revenue Procedure 2025-32 (IR-2025-103) · Social Security Administration. State: Iowa Department of Revenue.
Estimate for 2026. Self-employment tax is 15.3% on 92.35% of net profit (Social Security capped at the annual wage base); half of it is deducted before federal income tax. Excludes the qualified business income deduction, retirement contributions, health-insurance deduction, credits, and local taxes. This is a planning estimate for general information, not tax advice. Consult a tax professional before making quarterly payments.
How 1099 tax works in Iowa
Self-employed people pay self-employment tax: 15.3% (Social Security + Medicare) on 92.35% of net profit, with the Social Security portion capped at the annual wage base. Half of that SE tax is deductible before your federal income tax is figured on the rest. Iowa then taxes your profit as ordinary income. Iowa finished its move to a flat tax in 2026: all taxable income is taxed at 3.8%. The rate was 8.53% at the top as recently as 2022. Retirement income is exempt for filers 55 and older.
Because no employer withholds for you, the IRS expects quarterly estimated payments. The calculator divides the annual total by four as a starting point. Your actual quarters can vary with income timing and credits.
This is a planning estimate, not your final return. It excludes the qualified business income deduction, retirement and health-insurance deductions, and credits. It is general information, not tax advice. Consult a tax professional before making quarterly payments. Federal figures: IRS Revenue Procedure 2025-32 (IR-2025-103) · Social Security Administration.
1099 tax calculators for other states
Same 2026 engine, each with its own state rules.