Get an EIN for your South Dakota business
A federal Employer Identification Number (EIN) is the IRS tax ID your South Dakota business uses for banking, payroll, and tax filing. The IRS issues EINs free · application takes 10 minutes online with immediate issuance for US founders. International founders apply by fax or mail. After your EIN, you also need to register with the South Dakota Department of Revenue via the Sales Tax License only (no state income tax).
South Dakotan EIN + state tax accounts at a glance
| Federal EIN cost | $0 (IRS direct) |
|---|---|
| Issuance time | Immediate (online for US founders) |
| South Dakota revenue agency | South Dakota Department of Revenue |
| State tax registration form | Sales Tax License only (no state income tax) |
| Sales tax permit needed? | Yes · register for sales tax permit. |
| State withholding account? | No state withholding. Skip (federal withholding still applies). |
| File.Business service fee | $0 |
How to get an EIN in South Dakota: step by step
- Form your business entity first. Your South Dakotan LLC, corporation, or other entity must exist before applying for an EIN. Form an LLC in South Dakota or form a corporation if needed.
- Pick your responsible party. The IRS requires one individual with substantial control over the entity (typically an owner with at least 25% interest) to be listed on Form SS-4.
- Apply online at irs.gov. US founders with a valid SSN or ITIN get the EIN immediately. The application is free and takes about 10 minutes.
- International founders: apply by fax or mail. Without an SSN or ITIN, the online system will not work. Fax Form SS-4 (typically 4 business days) or mail it (4 to 6 weeks). ITIN vs EIN explained.
- Register with the South Dakota Department of Revenue. Use the Sales Tax License only (no state income tax) to get your state-level tax accounts in South Dakota.
- Open a business bank account. South Dakota banks commonly used include First Premier, Great Western, Wells Fargo.
Skip the paperwork · we get your South Dakotan EIN
We prepare Form SS-4, file with the IRS, and also handle your state-level registration with the South Dakota Department of Revenue. $0 service fee. International founders supported (we file by fax to get your EIN within a week, faster than mail).
Start my South Dakotan EINSouth Dakota state tax accounts you also need
An IRS EIN is federal-only. To operate in South Dakota, you typically also need:
- State tax ID: Register with South Dakota Department of Revenue using Sales Tax License only (no state income tax).
- Sales tax permit: Yes · register for sales tax permit. Sales tax registration overview.
- State withholding account: No state withholding. Skip (federal withholding still applies).
- Unemployment insurance account: Required if you have employees in South Dakota.
- Workers compensation insurance: Required if you have employees. Business insurance overview.
South Dakotan EIN FAQ
How much does an EIN cost in South Dakota?
The IRS issues EINs free. Anyone charging you for the EIN itself is upselling. File.Business charges $0 service fee whether you have us file it or you do it yourself.
How long does the EIN take to receive?
US founders applying online: immediate. International founders applying by fax: typically 4 business days. By mail: 4 to 6 weeks.
Can I get an EIN without an SSN?
Yes. International founders apply with Form SS-4 by fax or mail. The IRS accepts foreign passport details as identification.
Do I need a separate South Dakota state tax ID?
Yes, in most cases. The South Dakota Department of Revenue requires a state-level registration via Sales Tax License only (no state income tax) for businesses operating in South Dakota.
Can I use my EIN to open a South Dakota business bank account?
Yes, your EIN is required for business banking. South Dakota banks commonly used include First Premier, Great Western, Wells Fargo.
On the $129/yr Compliance Annual Filings plan, we cover state late fees.
When you autofile your annual report through the $129/yr plan and we miss the deadline, we pay the state's late fee. The guarantee applies to that specific plan and the filings it includes. Other File.Business services are billed at the prices on this page.