Iowa 1099 taxes: a 2026 guide for the self-employed
Keeper StaffKeeper is a delightfully smart tax filing software that's especially useful for people with 1099 contracting and freelance income. Our blog breaks down IRS guidance with real-world examples and analysis by tax professionals — empowering taxpayers to save money and take control of their finances.
Krislyn ChanKrislyn is Chief Growth Officer at Keeper. At Keeper, she strives to make expert-level tax strategies that used to require a traditional CPA accessible to all. Prior to Keeper, she was at Curology, where she helped bring custom, prescription-grade skincare out of the dermatologist's office to millions of faces.
Key takeaways
- 1099 income in Iowa is subject to three taxes: 15.3% federal self-employment tax, 10% to 37% federal income tax, and a flat 3.8% Iowa income tax.
- Set aside 20–25% of your profit in a high-yield savings account, so the money earns interest until your tax payments are due. For a single filer with no other income, total tax runs from 20.1% of profit at $40,000 to 29.3% at $200,000.
- Iowa taxes the same income the IRS does. It starts from your federal taxable income, so you keep the federal standard deduction and the QBI deduction on your Iowa return.
- Iowa estimated payments are due at the end of the month. If you expect to owe $1,000 or more, pay Iowa by April 30, June 30, and September 30, 2026, and February 1, 2027, about two weeks after the federal dates.
- Many school districts add a surtax. It’s a percentage of your Iowa income tax, set by each district, and you pay it on your Iowa return.
How much tax do 1099 workers pay in Iowa?
These tables show estimated 2026 tax on self-employment profit, the amount left after business expenses. They assume this is your only income, you take the standard deduction, and you have no kids or tax credits.
Single filer, 2026
| 1099 profit | Total tax | % of profit | Self-employment tax | Federal income tax | Iowa income tax |
|---|---|---|---|---|---|
| $40,000 | $8,028 | 20.1% | $5,652 | $1,775 | $601 |
| $60,000 | $13,203 | 22.0% | $8,478 | $3,559 | $1,166 |
| $80,000 | $18,378 | 23.0% | $11,304 | $5,344 | $1,731 |
| $100,000 | $24,660 | 24.7% | $14,130 | $8,235 | $2,296 |
| $150,000 | $41,316 | 27.5% | $21,194 | $16,413 | $3,708 |
| $200,000 | $58,552 | 29.3% | $28,234 | $25,196 | $5,121 |
Married filing jointly, one self-employed spouse, 2026
| 1099 profit | Total tax | % of profit | Self-employment tax | Federal income tax | Iowa income tax |
|---|---|---|---|---|---|
| $40,000 | $6,121 | 15.3% | $5,652 | $398 | $71 |
| $60,000 | $10,999 | 18.3% | $8,478 | $1,885 | $636 |
| $80,000 | $16,055 | 20.1% | $11,304 | $3,550 | $1,201 |
| $100,000 | $21,230 | 21.2% | $14,130 | $5,335 | $1,766 |
| $150,000 | $34,169 | 22.8% | $21,194 | $9,795 | $3,179 |
| $200,000 | $49,298 | 24.6% | $28,234 | $16,472 | $4,592 |
How Iowa taxes 1099 income
If you’re a freelancer, independent contractor, gig worker, or solo business owner in Iowa, your net profit (1099 income minus business expenses) is taxed three ways:
- Federal self-employment tax: 15.3% on most of your profit (92.35% of it). That’s 12.4% for Social Security, on earnings up to $184,500 in 2026, plus 2.9% for Medicare with no cap. It replaces the payroll taxes an employer would split with you. Estimate it with the self-employment tax calculator.
- Federal income tax: 10% to 37% on what’s left after three deductions: the $16,100 standard deduction ($32,200 married filing jointly), half of your self-employment tax, and the 20% QBI deduction.
- Iowa income tax: a flat 3.8% on that same federal taxable income, minus a $40 credit for each person on your return. You report it on Form IA 1040.
What’s different about Iowa
- Every federal deduction carries over. Iowa is one of the few states that starts from federal taxable income instead of federal AGI. That means the $16,100 standard deduction and the QBI deduction lower your Iowa tax too. At $80,000 of profit, the QBI deduction alone saves you about $443 of Iowa tax.
- One flat rate. Every dollar of taxable income is taxed at 3.8%. Iowa has used the flat rate since 2025.
- A school district surtax. Many Iowa school districts add a surtax of up to 20% of your Iowa income tax, based on where you lived on December 31. Look up your district’s rate in the Iowa Department of Revenue’s surtax table.
A self-employed person in Iowa at $80,000 pays $18,378: about $882 less than in California and $1,731 more than in Texas, which has no income tax.
Example: Iowa tax on $80,000 of 1099 income
Here’s the math for a single self-employed person in Des Moines with $80,000 of profit and no other income, before any school district surtax.
| Step | Amount |
|---|---|
| Self-employment tax: $80,000 × 92.35% × 15.3% | $11,304 |
| $80,000 minus half of self-employment tax | $74,348 |
| Income the IRS and Iowa tax: $74,348 minus the $16,100 standard deduction and $11,650 QBI deduction | $46,599 |
| Federal income tax | $5,344 |
| Iowa income tax: 3.8%, minus the $40 personal credit | $1,731 |
| Total 2026 tax | $18,378 (23.0%) |
Self-employment tax is the biggest piece. Every dollar you write off as a business expense lowers all three taxes, since your self-employment tax, federal income tax, and Iowa income tax are all based on your profit after expenses.
What tax write-offs can I claim?
How to lower your Iowa 1099 tax bill
At $80,000 of profit, every $1,000 of business expenses you deduct cuts about $259 from your total tax. Common write-offs for self-employed people in Iowa include:
- Your phone and internet, for the share you use for work
- Car expenses, using a set rate per mile or your actual costs (compare the two)
- A home office, if you use part of your home regularly and only for work (estimate yours)
- Software, equipment, and supplies you buy for your business
- Health insurance premiums you pay as a self-employed person
- Retirement contributions to a SEP-IRA or Solo 401(k)
Most of these are small purchases spread across a year of bank and card statements, which is where they get missed. See the full list of tax write-offs for self-employed people.
Track and claim every eligible deduction with Keeper
Keeper scans your accounts for write-offs and files your return — with tax pros reviewing every one.
Try it freeIowa estimated tax payments
If you expect to owe $1,000 or more in Iowa tax for 2026 on income with nothing withheld, make estimated payments to the Iowa Department of Revenue through GovConnectIowa or with Form IA 1040ES. Iowa’s due dates are later than the federal ones:
| Payment | Iowa due date | Federal due date |
|---|---|---|
| 1st | April 30, 2026 | April 15, 2026 |
| 2nd | June 30, 2026 | June 15, 2026 |
| 3rd | September 30, 2026 | September 15, 2026 |
| 4th | February 1, 2027 | January 15, 2027 |
- New for 2026: the threshold rose to $1,000, up from $200, so fewer part-time self-employed people have to pay Iowa quarterly.
- To avoid a penalty for paying too little, pay at least 90% of this year’s Iowa tax or 100% of last year’s, whichever is less, in on-time payments. If your 2025 federal AGI was over $150,000 ($75,000 married filing separately), the prior-year amount rises to 110%. The penalty works like interest, at 10% a year for 2026.
Get your payment amounts with the Iowa quarterly tax calculator.
Should you form an LLC or S corp in Iowa?
You don’t need one to work as an independent contractor. If you work for yourself without forming a business, you report 1099 income on Schedule C, part of your regular tax return, and pay the taxes above. Iowa is one of the cheapest states to set one up:
- LLCs cost $50 to form and $30 every two years for the biennial report if you file online ($45 on paper).
- S corps can make sense once your profit is around $80,000, when the self-employment tax savings get significant. You pay yourself a reasonable salary and take the rest as profit payouts (distributions) that aren’t subject to self-employment tax.
Run the numbers for your income to see what you’d save.
Do self-employed people in Iowa charge sales tax?
Sometimes. Iowa taxes more services than most states, about 75 of them, including software as a service, photography, landscaping, janitorial work, and many repair services. Writing, design, consulting, and most professional services aren’t on the list. The rate is 6%, plus a 1% local option tax in most places.
8 sources
- 2026 IA 1040ES instructions · revenue.iowa.gov
- Line 4: Iowa taxable income (IA 1040 expanded instructions) · revenue.iowa.gov
- Estimated income tax payments · tax.iowa.gov
- School district surtax rates for 2025 · revenue.iowa.gov
- Iowa sales and use tax: taxable services · revenue.iowa.gov
- Business entity forms and fees (Iowa Secretary of State) · sos.iowa.gov
- IRS releases tax inflation adjustments for tax year 2026 · irs.gov
- Contribution and benefit base · ssa.gov
This article is for informational purposes only and isn’t tax, legal, or financial advice. Tax rules change and depend on your situation, so talk to a tax professional about yours.
