Get an EIN for Your Wisconsin LLC — Free at IRS.gov
Your EIN is your LLC's federal tax ID — required for banking, hiring, and Wisconsin Department of Revenue registration. It's 100% free at IRS.gov and takes about 15 minutes. Here's the Wisconsin sequence, including the no-SSN path.
Apply for your EIN free at IRS.gov — never pay a third party. With an SSN or ITIN, the online application takes about 15 minutes and issues your EIN immediately. Without one, file Form SS-4 by fax (≈4+ business days) or mail (≈4+ weeks). Apply after your Articles are approved so IRS records match your exact legal name and formation date. Then register with the Wisconsin Department of Revenue (a separate agency from the DFI, which handled your formation) — for sales tax if selling taxable goods, or withholding if hiring.
- Cost
- $0 — always free
- Where
- IRS.gov only
- Online time
- ~15 minutes
- Online issuance
- Immediate
- No SSN? (SS-4 fax)
- ~4+ business days
- After EIN
- WI Dept. of Revenue — separate from DFI
What an EIN Is (and Why Every Wisconsin LLC Needs One)
An EIN (Employer Identification Number) is the nine-digit federal tax ID the IRS assigns your business. You need one even with zero employees:
- Open a business bank account — every bank wants the EIN letter, your confirmed Articles, and your operating agreement.
- Register with the Wisconsin Department of Revenue — for sales tax if selling taxable goods, or withholding if hiring. Note: this is a different agency from the DFI, which handled your LLC formation.
- File federal taxes — including 15.3% self-employment tax.
- Protect your SSN — put your EIN on W-9s instead of your personal number.
Never pay for an EIN. The IRS charges nothing. Sites charging $50–$300 for "EIN filing" resell a free government form, often styled to look official. The only site you need is IRS.gov.
Which Application Method Should You Use?
EIN Path Picker — Wisconsin Edition
2 questions · your exact path, timeline, and Wisconsin next step
The IRS online assistant runs Mon–Fri during posted hours and issues one EIN per responsible party per day. All methods are free.
The Online Application, Step by Step
Wait for approval first
Your EIN must match your final legal name and formation date. File through the DFI first.
Go to the IRS EIN Assistant
IRS.gov → "Apply for an Employer ID Number." Choose "Limited Liability Company," then Wisconsin.
Enter members and responsible party
Member count sets your default classification — disregarded entity for one member, partnership for two-plus — and the responsible party provides their SSN/ITIN.
Complete in one session
The application times out after 15 idle minutes with no save. Keep your confirmed Articles in front of you.
Download the CP 575 immediately
Your confirmation letter displays once. Banks will ask for it; a replacement means calling the IRS for Letter 147C.
No SSN? You Can Still Get an EIN
Non-US founders complete Form SS-4, write "Foreign" on line 7b, and submit by fax (~4+ business days) or mail (~4+ weeks). Line-by-line help in our guides to EINs without an SSN and foreign-owned LLCs. Foreign-owned single-member LLCs: remember Form 5472 — a $25,000 penalty applies even at zero income.
After You Get Your EIN — the Wisconsin Sequence
- Open your business bank account — CP 575, confirmed Articles, operating agreement.
- Register with the Wisconsin Department of Revenue — a separate agency from the DFI — for sales tax if selling taxable goods, and withholding if hiring.
- Note your formation quarter for your Step 6 obligations.
Ahmad Adil's Take: the EIN is the one step where "cheap" and "right" are the same thing — free, from the source, in fifteen minutes. If any site or upsell asks you to pay for it, that tells you exactly how they make money. Worth flagging again here: your EIN registration flows to the Department of Revenue, a genuinely different Wisconsin agency from the DFI that handled your formation. Two agencies, two systems — keep that straight and the rest of Wisconsin's process stays simple.
- ✓Forms your Wisconsin LLC for $39 + the $130 state fee
- ✓Files online with the Department of Financial Institutions
- ✓Free Wisconsin registered agent the first year
- ✓No upsells · No data selling · Privacy by Default
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Wisconsin LLC — FAQ
Ahmad Adil is the founder and CEO of LLC School. The figures here — the $130 online Articles of Organization, the $25 annual report, and Wisconsin’s quarterly filing deadline system — reflect current Wisconsin Department of Financial Institutions guidance. This is educational content, not legal or tax advice.
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