Personal Taxes Without a State Income Tax Return
South Dakota residents do not file a state income tax return, because the state has no individual income tax. Personal tax preparation here centres on the federal return, on income earned in states that do tax it, and, for many people, on proving that South Dakota really is home. BOMCAS prepares federal returns for South Dakota residents and handles the other-state returns and records that go with them.
What South Dakota Residents Usually File
- Federal Form 1040, with schedules for business, rental, farm, investment and retirement income.
- Nonresident returns in states where income is earned, such as wages for work performed in Minnesota or Iowa, or rent from property in another state.
- A final part-year resident return in the former state for the year of a move to South Dakota.
- Quarterly federal estimated tax payments when wages are not the main source of income.
Federal Changes for Current Returns
Recent federal legislation changed several personal tax items. For tax year 2026, the standard deduction is $16,100 for single filers, $32,200 for married couples filing jointly and $24,150 for heads of household. From 2025 through 2028, several new deductions are available:
- An extra $6,000 deduction for each taxpayer age 65 or older, phasing out above $75,000 of modified adjusted gross income ($150,000 for joint filers).
- A deduction of up to $25,000 for qualified tips received in occupations the IRS lists as customarily receiving tips, which matters to restaurant and hospitality workers in tourist areas such as the Black Hills.
- A deduction for the premium portion of qualified overtime pay, up to $12,500 ($25,000 for joint filers).
The tips and overtime deductions phase out above $150,000 of modified adjusted gross income ($300,000 for joint filers) and require a Social Security number. We check each one against the W-2s and 1099s, rather than assuming it applies.
Full-Time Travelers, RVers and South Dakota Domicile
South Dakota is a popular legal home for full-time RVers, travel nurses and others who live on the road, using a mail-forwarding address. To get a South Dakota driver license, a full-time traveler using a personal mailbox provides the usual identity and address documents plus a receipt for an overnight stay in South Dakota within the past year, a piece of mail showing the South Dakota mailbox address, and a completed residency affidavit.
Voting rules changed in 2025. Since July 1, 2025, a voter's residence for South Dakota election purposes is a fixed dwelling where the person lives and usually sleeps for at least 30 consecutive days. From January 1, 2026, someone who registers with only a mail-forwarding or post office box address, without describing where they actually live, can be registered only as a federal voter.
A driver license and vehicle registration help, but they do not settle residency for tax purposes in the state you left. A former state can look at where your home, spouse, business interests, doctors and time actually are. We help travelers keep a domicile file: the license, registration, mailbox agreement, campground receipts, a log of days by state, and proof that ties to the former state were cut. We also prepare the former state's final return so that the move date is clearly reported.
Moving to South Dakota From a Taxing State
The year of a move is usually the most complicated return. Income before the move date may be taxable in the former state, and some income, such as a bonus earned before the move, may still be sourced there after it. Selling a home, exercising stock options or taking a large retirement distribution near the move date can change the result. We look at timing before the move when possible, then prepare the part-year return and the federal return together so the figures match.
Farm and Ranch Families
Many South Dakota households report farm income on Schedule F. Farm income averaging on Schedule J can spread a high-income year over the three prior years at lower rates. Farmers who earn at least two-thirds of their gross income from farming have a special estimated tax rule: they can make one payment by January 15 or file and pay in full by March 1 instead of making quarterly payments. We prepare farm returns with depreciation schedules and inventory records that also support any lender reporting.
Self-Employed and Gig Income
Independent contractors, drivers and online sellers owe self-employment tax on net earnings in addition to income tax, and they usually need quarterly estimated payments. Payment platforms now generally issue Form 1099-K only above $20,000 and 200 transactions, but all income is still reportable. We organize expenses, calculate the home office and vehicle deductions where they qualify, and set realistic estimates for the coming year.
Retirees and Investors
With no state tax on pensions, Social Security, IRA withdrawals or capital gains, the federal return is the only income tax return for most retired South Dakotans. We review required minimum distributions, the taxable portion of Social Security, and charitable giving from IRAs, and coordinate with any other-state income such as rental property.
How It Works
You upload your slips and documents securely. We review last year's return, ask focused questions, prepare the return, and go over it with you before e-filing. If you are traveling, the whole process can be done from the road.
South Dakota Personal Tax Preparation Questions
Do I need to file a South Dakota state income tax return?
No. South Dakota has no individual income tax, so there is no state income tax return. You still file a federal return, and you may need returns in other states where you earn income.
Does a South Dakota driver license make me a resident for tax purposes?
It helps, but the state you left can still look at where your home, family, business and time actually are. Keep records showing your ties to South Dakota and that ties to the former state ended.
I travel full time in an RV. What do I need for a South Dakota license?
In addition to identity and address documents, full-time travelers using a personal mailbox provide a receipt for an overnight stay in South Dakota within the past year, mail showing the South Dakota mailbox address, and a completed residency affidavit.
Can I deduct tips or overtime on my federal return?
From 2025 through 2028, eligible workers can deduct up to $25,000 of qualified tips and up to $12,500 of qualified overtime premium ($25,000 joint), with phase-outs above $150,000 of modified AGI ($300,000 joint).
Talk to BOMCAS About Personal Tax Preparation in South Dakota
If you also run a business, your return connects to business tax preparation and, when the records need attention, bookkeeping. Families who employ a caregiver or nanny can hand us the household payroll. New residents often want tax planning around the move itself, anyone with missed years can begin with back taxes and late filing, and Canadians moving to or from South Dakota should read about cross-border tax. Selling goods or taxable services on the side also brings sales and use tax into the picture. For a summary of how South Dakota taxes businesses and residents, see the South Dakota accounting and tax overview or our United States services.
Tell us what you need help with and we will reply with next steps. Contact BOMCAS, use the contact form below, call 780-667-5250 or email info@bomcas.ca. You can also go back to the South Dakota overview. This page is general information, not advice for a particular situation.