Live in Iowa, work in South Dakota
Your work state has no tax on wages, so you pay only your home state.
Official tax guidance for both states
Check withholding, filing requirements and current forms with each state's tax agency.
- Iowa: Iowa Department of Revenue (opens in new tab)
- South Dakota: Department of Revenue (opens in new tab)
Agency directory checked 2026-10-01 against the IRS state-government directory. This verifies the agency links, not an individual tax result. Use forms for the year you are filing.
Before you use this estimate
This model assumes a full-year resident of Iowa, ordinary employee wages and all workdays physically in South Dakota. Check exemption eligibility before treating a work-state amount of $0 as your own result. Withholding is a prepayment, not final tax liability. Other income, a move during the year, remote work and separate local taxes or credits can change the result.
State income tax: $3,148 a year
Modeled annual state income tax for living in Iowa and working in South Dakota: about $3,148 on $100,000 of wages.
Your work state has no tax on wages, so you pay only your home state.
Tax guide and official sources: live in Iowa, work in South Dakota
Official agency starting points: Iowa tax agency (opens in new tab) · South Dakota tax agency (opens in new tab). These directory links identify the selected states' agencies, not your filing obligations. Check their individual-tax guidance and forms for the year you are filing.
This is the usual filing pattern, not a determination that you must file. Filing thresholds, age or dependent status, other income and withholding refunds can change which returns you need.
How this $100,000 estimate adds up
These steps follow the selected home, work state, salary and filing status. They reconcile the model's annual liability, not the amounts withheld from your paycheck.
| Step | South Dakota work state | Iowa home state |
|---|---|---|
| Tax before the modeled other-state credit | $0 | $3,148 |
| Modeled other-state credit subtracted | $0 | $0 |
| Tax after that credit | $0 | $3,148 |
Total: $0 + $3,148 = $3,148 a year. Amounts are rounded for display. Work-state wage exemptions, when applicable, are already reflected in the first row; they are not an other-state credit.
No other-state credit is subtracted in this selected scenario. Included county components stay in these amounts; excluded local taxes and credits stay excluded. Federal income tax, payroll programs and refund eligibility are outside this reconciliation.
State tax at different salaries
| Wages | To SD | To IA | Modeled total | If you worked in IA |
|---|---|---|---|---|
| $50,000 | $0 | $1,248 | $1,248 | $1,248 |
| $75,000 | $0 | $2,198 | $2,198 | $2,198 |
| $100,000 | $0 | $3,148 | $3,148 | $3,148 |
| $150,000 | $0 | $5,048 | $5,048 | $5,048 |
| $250,000 | $0 | $8,848 | $8,848 | $8,848 |
Single filer, all wages earned in South Dakota, 2026 state tax rules, standard deductions. Local income taxes not included.
What to do
- Make sure your employer withholds Iowa tax, since nothing is withheld for South Dakota.
- Keep a record of the days you work in each state, especially if you sometimes work from home.
Local income taxes
- Iowa: School district income surtax on residents only (percentage of state tax); does not affect nonresident commuters.
Frequently asked questions
Do I pay South Dakota income tax if I live in Iowa?
No. Your work state has no tax on wages, so you pay only your home state.
Do I have to file taxes in both Iowa and South Dakota?
Usually you file only one state return (a resident return in Iowa), though some states still require a nonresident return to get a refund of any wrongly withheld tax.
Will I be taxed twice?
No. South Dakota doesn't tax these wages at the state level; the modeled Iowa tax is about $3,148 on $100,000. Local taxes need a separate check.
Related
- Live in South Dakota, work in Iowa
- Moving from Iowa to South Dakota
- Moving from South Dakota to Iowa
- Live in Iowa, work in Illinois
- Live in Iowa, work in Minnesota
- Live in Iowa, work in Missouri
- Live in Iowa, work in Nebraska
- Live in Iowa, work in Wisconsin
Rules reviewed 2026-09-24 from state revenue departments and the Tax Foundation. Estimates only; confirm with each state's revenue department.