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South Dakota Has No State Income Tax — File Your Federal Return Free*

South Dakota has no state income tax, so you only need to file federal. With TaxAct Free Edition, that's $0 — simple, accurate, done.

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Get the full breakdown of your state's tax situation, what it means for filing, and how to file your federal return for free.

Does South Dakota Have a State Income Tax?

No income tax and retirement-friendly. Read the full guide to South Dakota taxes.

States With No Income Tax

The complete guide to all 9 states that don't charge state income tax and what it means for your filing.

How to File Your Federal Tax Return for Free

Find out if you qualify for free federal filing and what's included in TaxAct Free Edition.

Frequently Asked Questions

You can file for free yourself with TaxAct's Free Edition if you meet the qualifications below, including filing using IRS Form 1040 only without having to attach any forms or schedules. Only certain taxpayers are eligible.

Situations covered (assuming no added tax complexity):

  • W-2 income, Unemployment income, Retirement income

  • Earned Income Tax Credit, Child Tax Credit

  • Dependents

  • Current Students

  • Student loan interest

Situations not covered:

  • Investment income: Stock, interest, dividends, crypto, or capital gains/losses

  • Sale of home, real estate taxes, mortgage interest, or rental property income

  • Royalty, trusts, and foreign accounts

  • Business and farm income

  • Itemized deductions

  • Adoption credits and child and dependent care

  • Health Savings Account (HSA)

  • Freelance, contractor, side hustle, or self-employed income and expenses

About 40% of users qualify. If you don’t qualify for a basic federal tax return, we have other paid tax filing options to help you easily file taxes online with TaxAct.