State Guide
EIN in Wisconsin (WI)
How to get an EIN for your Wisconsin business or LLC. The EIN is a federal number from the IRS, identical in all 50 states. Non-residents file Form SS-4 with a passport. $49 Standard. $97 Express.
Getting an EIN in Wisconsin follows the same federal IRS process used in every other state. The EIN is a federal number, not state-specific. You file IRS Form SS-4 once, and the same 9-digit EIN (XX-XXXXXXX) works for your Wisconsin business nationwide. Apply free at irs.gov (SSN required) or by fax to 855-215-1627. Non-residents enter a passport number on Line 7b. ein.so files it for $49 Standard (4-7 business days) or $97 Express (2-3 business days).
Wisconsin is a Midwest manufacturing and agriculture hub with a strong base of small businesses and international founders forming US LLCs. Whether you run a Milwaukee startup, a Madison consultancy, or a non-resident e-commerce company registered in Wisconsin, you need one EIN to handle federal taxes, open a bank account, and hire staff. The EIN does not change from state to state. This guide explains the federal SS-4 process, how non-residents get an EIN without an SSN, how the EIN differs from a Wisconsin state tax ID, and what to file after approval.
| Detail | Information |
|---|---|
| State | Wisconsin (WI) |
| Federal EIN format | XX-XXXXXXX (9 digits) |
| EIN issuer | Internal Revenue Service (IRS) |
| EIN cost | $0 (IRS) / $49 Standard / $97 Express (ein.so) |
| State tax authority | Wisconsin Department of Revenue |
| LLC formation authority | Wisconsin Department of Financial Institutions |
| IRS fax (international) | 855-215-1627 |
| IRS phone (international) | 800-829-4933 |
Federal vs State
Is a Wisconsin EIN Different From a Federal EIN?
A Wisconsin EIN is not a separate thing. The EIN is a single federal number issued only by the IRS. The same 9-digit EIN applies in Wisconsin, Texas, California, and every other state. Wisconsin never issues its own EIN.
Many business owners confuse the federal EIN with the Wisconsin state tax registration. These are two different identifiers from two different authorities. You use each one for a different purpose.
| Identifier | Issued By | Used For |
|---|---|---|
| Federal EIN | IRS | Federal taxes, banking, hiring, Form 5472, Form 1120 |
| Wisconsin state tax ID | Wisconsin Department of Revenue | Wisconsin sales tax, state withholding |
Your EIN does not replace state tax registration. A Wisconsin business that sells taxable goods or hires employees often needs both numbers. Get the federal EIN first, then register with the state if your activity requires it. See state tax ID for the distinction, and how to get an EIN for the federal process.
Non-Residents
Can a Non-US Resident Get an EIN for a Wisconsin LLC?
Yes. A non-US resident gets an EIN for a Wisconsin LLC without an SSN or ITIN. You enter your passport number on Form SS-4 Line 7b in place of an SSN. The IRS online tool requires an SSN, so non-residents use the fax method instead.
Non-residents form Wisconsin LLCs to invoice US clients in dollars, sell on US marketplaces, and present a US business identity. The EIN connects that LLC to the US financial system. You never need to visit the United States to get it.
No SSN or ITIN Required
Online Tool Is Blocked
Apply Entirely From Abroad
One EIN Covers Wisconsin
How to Apply
How Do You Get an EIN in Wisconsin?
You get an EIN in Wisconsin through the IRS using one of four methods. US residents with an SSN use the instant online tool. Non-residents without an SSN fax Form SS-4 to 855-215-1627 and receive the EIN in 4-7 business days.
| Method | Speed | Cost | SSN Needed |
|---|---|---|---|
| Online | Instant | $0 | Yes |
| Fax | 4-7 business days | $0 (DIY) / $49 (ein.so) | No |
| Phone | Same call | $0 | International only |
| 4-6 weeks | $0 | No |
The process is identical regardless of state. The form, the IRS fax number, and the rules do not change for Wisconsin.
Form Your Wisconsin LLC
Gather Your Documents
Complete Form SS-4
Submit by Fax and Receive Your EIN
See the full EIN application process and EIN processing time for timing details.
Cost
How Much Does an EIN Cost in Wisconsin?
The IRS charges $0 for an EIN in Wisconsin and every other state. There is no federal application fee. ein.so charges $49 for Standard filing or $97 for Express filing to prepare and fax Form SS-4 for non-residents who cannot use the online tool.
The EIN fee and the Wisconsin LLC formation fee are separate costs. The EIN is federal and free; LLC formation is a state filing paid to the Wisconsin Department of Financial Institutions. Confirm the current Wisconsin filing fee on the state website before you form.
| Cost Item | Amount | Paid To |
|---|---|---|
| Federal EIN (DIY) | $0 | IRS |
| EIN via ein.so Standard | $49 (4-7 business days) | ein.so |
| EIN via ein.so Express | $97 (2-3 business days) | ein.so |
| ITIN via ein.so | $197 Standard / $297 Express | ein.so |
| Wisconsin LLC formation | State fee (confirm with WI DFI) | WI Department of Financial Institutions |
ein.so files the EIN and does not provide tax advice. See EIN cost for the full breakdown. If you also need a personal taxpayer number, review the ITIN option, which ein.so handles for $197 Standard or $297 Express.
Banking & Payments
How Do You Use a Wisconsin LLC EIN for Banking and Payments?
You use a Wisconsin LLC EIN to open a US business bank account and connect payment processors. The EIN is the federal tax ID that links your LLC to US banks. Mercury, Relay, and Wise approve most non-resident LLC owners remotely within a few business days.
US Business Bank Account
Stripe Payments
PayPal Business
US Marketplaces
Together, a Wisconsin LLC, an EIN, and a US bank account let you invoice American clients in dollars and accept card payments through US processors.
Compliance
What Do You File After Getting a Wisconsin EIN?
After getting a Wisconsin EIN, you complete federal compliance, register for state taxes if required, and file a BOI report. A foreign-owned single-member LLC also files Form 5472 with a pro-forma Form 1120 each year. The penalty for missing Form 5472 is $25,000.
Form 5472 + Form 1120
BOI Report to FinCEN
Wisconsin State Registration
Open Your Bank Account
Annual filing for foreign-owned LLCs
- File Form 5472 with a pro-forma Form 1120 each year ($25,000 penalty for non-filing).
- File the FinCEN BOI report and keep ownership details current.
- Confirm Wisconsin state tax registration needs with the Department of Revenue.
ein.so handles the EIN application and does not provide tax advice. Work with a US CPA familiar with non-resident matters. See EIN without SSN and EIN for non-residents for more.
Next Steps
After Getting Your EIN in Wisconsin
- Open a US bank account — Mercury, Relay, and Wise accept non-resident LLC owners
- File your BOI report — required for most LLCs with FinCEN
- Set up payments — connect your EIN to Stripe or PayPal
- File Form 5472 — annually for foreign-owned LLCs ($25,000 penalty for non-filing)
- Review the SS-4 form guide and EIN without SSN for non-resident filing
Other states: Minnesota | Missouri | Oregon | South Carolina. Browse all on EIN by State.
Frequently Asked Questions
Is a Wisconsin EIN different from a federal EIN?
No. The EIN is a federal number issued by the IRS, not by Wisconsin. It is the same 9-digit number (XX-XXXXXXX) in all 50 states. Wisconsin does not issue its own version of an EIN. You apply once through the IRS, and that single EIN works for your Wisconsin business nationwide for federal tax purposes.
How do I get an EIN in Wisconsin?
Apply through the IRS one of four ways: online at irs.gov (instant, SSN required), by fax to 855-215-1627 (4-7 business days), by phone at 800-829-4933 (international applicants), or by mail (4-6 weeks). Non-residents without an SSN use the fax method. ein.so files Form SS-4 for $49 Standard or $97 Express.
Can a non-US resident get an EIN for a Wisconsin LLC?
Yes. Non-US residents form a Wisconsin LLC and get an EIN without an SSN or ITIN. You enter your passport number on Form SS-4 Line 7b instead of an SSN. The IRS online tool requires an SSN, so non-residents use the fax method. ein.so handles the full filing remotely for $49.
Do I need an SSN to get an EIN in Wisconsin?
No. An SSN is not required for an EIN. The IRS online tool requires an SSN, but the fax method on Form SS-4 does not. Non-residents write their passport number on Line 7b. ein.so files this fax application for you for $49, so you never need an SSN or ITIN.
How much does it cost to get an EIN in Wisconsin?
The IRS charges $0 for an EIN. There is no federal fee in any state. ein.so charges $49 (Standard, 4-7 business days) or $97 (Express, 2-3 business days) to prepare and fax Form SS-4 for non-residents. Wisconsin LLC formation has a separate state filing fee paid to the Department of Financial Institutions.
Does Wisconsin have a state tax ID separate from the EIN?
Yes. Wisconsin issues its own state tax registration through the Wisconsin Department of Revenue. This is separate from your federal EIN. You use the EIN for federal tax filing and the state registration for Wisconsin sales tax and withholding. Many businesses need both. Confirm your specific obligations with a CPA.
How long does it take to get an EIN for a Wisconsin business?
Online with an SSN, the EIN is instant. By fax, the IRS returns the EIN in about 4-7 business days. By mail, it takes 4-6 weeks. Through ein.so, Standard delivery is 4-7 business days ($49) and Express is 2-3 business days ($97). Non-residents use the fax route.
Does a foreign-owned Wisconsin LLC have to file Form 5472?
Yes. A foreign-owned single-member US LLC files Form 5472 with a pro-forma Form 1120 each year, regardless of the state of formation. The penalty for not filing is $25,000. This is an information return, not always a tax bill. Confirm your filing duties with a US CPA familiar with non-resident matters.
Can I open a US bank account with a Wisconsin LLC EIN?
Yes. A Wisconsin LLC with an EIN opens a US business bank account. Mercury, Relay, and Wise accept non-resident LLC owners with an EIN and passport, often within a few business days. You receive US account and routing numbers for ACH and wires. The EIN is required before any bank approval.
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