How to Obtain an EIN in Wisconsin | A Comprehensive Guide

Obtain an EIN in Wisconsin

In starting an LLC in Wisconsin, it is crucial to understand the importance of an Employer Identification Number (EIN) and how it impacts your business operations. An EIN is a unique nine-digit number the Internal Revenue Service (IRS) assigns to businesses operating in the United States for identification purposes. This number is essential for running a business, such as filing taxes, opening bank accounts, and hiring employees.

This article will explore the complete guide to obtaining an EIN in Wisconsin and the responsibilities and requirements associated with having an EIN.

Webinarcare Editorial Team will help you understand the process of obtaining an EIN. You must be guided by all the factors gathered in this article.

EIN Definition and Purpose

To form an LLC, an EIN is necessary for your business. An Employer Identification Number (EIN) is a federal tax identification number used by the Internal Revenue Service (IRS) to identify businesses in the United States. It is similar to a Social Security Number (SSN) for individuals but is specifically designed for businesses. The main purpose of an EIN is to help the IRS track and administer taxes for companies.

In Wisconsin, businesses are required to have an EIN if they meet any of the following criteria:

  • Have employees
  • Operate as a Partnership or Corporation in Wisconsin
  • File tax returns for employment, excise, or Alcohol, Tobacco, and Firearms (ATF) taxes
  • Withhold taxes on income, other than wages, paid to a non-resident alien
  • Have a Keogh plan (a tax-deferred pension plan for self-employed individuals or unincorporated businesses)
  • Are involved with trusts, estates, real estate mortgage investment conduits, non-profit organizations, farmers’ cooperatives, or plan administrators

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How to Obtain an EIN in Wisconsin

Obtaining an EIN in Wisconsin is a straightforward process; several methods are available to apply for one. However, if you want to be at ease with the process you can hire an LLC Services in Wisconsin, with add-ons of obtaining an EIN.

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Online Application Process

The easiest and fastest way to obtain an EIN is by applying online through the IRS website. The online application is available for businesses in Wisconsin and the rest of the United States.


To apply for an EIN online, follow these steps:

  1. Visit the IRS EIN Assistant webpage.
  2. Click “Apply Online Now” and follow the prompts to complete the application.
  3. Provide the necessary information, such as your legal name, trade name (if applicable), business address, and the responsible party’s Social Security Number or Individual Taxpayer Identification Number.
  4. Select the appropriate legal structure for your business (e.g., sole proprietorship, general partnership, corporation, etc.).
  5. Provide additional information as required, such as the number of employees, the reason for applying, and the primary business activity.
  6. Review and submit your application.

Upon successful completion of the application, you will receive your EIN immediately. Save or print a copy of the confirmation notice for your records.

Other Application Methods

If you prefer not to apply online or are unable to access the online application, you can also obtain an EIN through the following methods:

  • Fax: Complete Form SS-4 (Application for Employer Identification Number) and fax it to the appropriate fax number listed on the IRS website. You should receive your EIN within four business days.
  • Mail: Complete Form SS-4 and mail it to the appropriate address on the IRS website. The processing time for mailed applications is approximately four weeks.
  • Telephone: International applicants can apply for an EIN by calling the IRS at 267-941-1099 (not a toll-free number) from 6:00 a.m. to 11:00 p.m. Eastern Time, Monday through Friday.

After you have your EIN number, you can benefit in several ways. It will give your Wisconsin LLC the final advantage necessary to operate fully without legal or judicial issues.

If you have a Registered Agent, he can file an EIN for your business. Also, if you are planning to file for an LLC in Wisconsin, your Registered Agent should file for the Articles of Organization in Wisconsin.

Uses of EIN in Wisconsin

An EIN must run a business in Wisconsin. Some of the primary uses for an EIN include:

Opening a Business Bank Account

Banks typically require an EIN to open a business bank account, which is essential for separating your personal and business finances. With a business bank account, you can accept payments, deposit funds, and manage your company’s finances more efficiently.

If you are planning a bank for your Wisconsin business, you can check out the Best Banks in Wisconsin, which offer the best combination of fees, services, and convenience for your business needs.

Filing State and Federal Taxes

Businesses in Wisconsin must file taxes with both the state and federal governments, and an EIN is necessary to report and pay these taxes. Your EIN is used on various tax forms, such as income tax returns, employment tax returns, and excise tax returns which you can pay in Wisconsin Department of Revenue.

Payroll and Employee Tax Reporting

If your business has employees, you will need an EIN to report wages and other compensation paid to your workers. Additionally, an EIN is required for withholding and remitting federal income and payroll taxes on your employees’ behalf.

If you hire an employee for your business, you must request that your employees complete the following forms:

  • Employment Eligibility Form
  • Federal Tax Withholding Form
  • W-4 Form
  • Workers Compensation Claim Form
  • Disability Self-Identification Form
  • U.S. Citizenship and Immigration Services Form

Applying for Business Licenses and Permits

An EIN is often required when applying for business licenses and permits in Wisconsin. These licenses and permits may be necessary for various aspects of your business operations, such as zoning approval, health permits, or sales tax registration.

In Wisconsin, business license fee costs around the range of $50 – $300. You can check out Wisconsin Business Licenses to learn more about licenses and permits.

Establishing Credit and Securing Loans

An EIN can help your business establish credit, as it serves as an identifier for your company in the eyes of financial institutions. Additionally, lenders may require an EIN when applying for business loans or lines of credit.

Responsibilities and Requirements for EIN Holders in Wisconsin

As an EIN holder in Wisconsin, you are responsible for several tasks related to maintaining and managing your EIN. Some of these responsibilities and requirements include:

Updating the IRS on Changes to Business Information

If your business undergoes significant changes, such as a change in address, legal structure, or a responsible party, you must inform the IRS by filing the appropriate forms. This ensures the IRS has accurate and up-to-date information about your business and can properly administer taxes.

update my information

You can go to the Update My Information website of the Internal Revenue Service.

Required Tax Filings and Payments

With an EIN, your business is responsible for filing various tax returns and making tax payments to federal and state governments. Be informed about the specific tax obligations for your business type and industry in Wisconsin.

To keep your business in good standing in Wisconsin, you must file an Annual Report with the Wisconsin Secretary of State. The annual report provides updated information about your LLC, such as changes in address, members, or Registered Agent.

Record-Keeping Requirements

Proper record-keeping is essential for businesses with an EIN, as it helps ensure accurate tax reporting and compliance with laws and regulations. Maintain records of your company’s income, expenses, and other financial transactions to facilitate accurate tax filing and minimize potential issues with the IRS.

Establish a reliable accounting system to track income, expenses, and tax obligations. You can manage your finances using spreadsheets, accounting software, or hiring a professional accountant.

Closing an EIN Account

Suppose your business ceases operations or no longer requires an EIN. In that case, you must notify the IRS by submitting a letter containing your complete legal name, EIN, business address, and the reason for closing the account. This allows the IRS to update its records and prevent future tax-related issues.

cancel EIN

If you have a copy of the EIN Assignment Notice that was issued when your EIN was assigned, include that when you write it to the IRS with the below mailing address:

  • Internal Revenue Service MS 6055 Kansas City, MO 64108
  • Internal Revenue Service MS 6273 Ogden, UT 84201

Or, you can check out Canceling an EIN via the IRS for further information.

Common Issues and Solutions for EIN in Wisconsin

Business owners in Wisconsin may encounter issues related to their EIN, such as losing or misplacing the number, incorrect information on the EIN application, or changes in business structure or ownership. Here are some solutions to common EIN-related problems:

  • Lost or Misplaced EIN: If you lose or misplace your EIN, you can contact the IRS by calling their Business & Specialty Tax Line at 1-800-829-4933. The IRS representative can provide you with your EIN after verifying your identity.
  • Incorrect Information on EIN Application: Suppose you discover an error on your EIN application, such as an incorrect business name or address. In that case, you can correct the information by submitting a letter to the IRS detailing the changes. Be sure to include your EIN, the incorrect information, and the correct information in your letter.
  • Change in Business Structure or Ownership: If your business undergoes a significant legal structure or ownership change, you may need to obtain a new EIN. Consult the IRS guidelines to determine if a new EIN is necessary.
  • Dealing with Identity Theft or Fraud: If you suspect your EIN has been compromised or used fraudulently, immediately report the issue to the IRS. The IRS can guide you through the steps to secure your EIN and protect your business from potential tax-related issues.

State-Specific EIN Information and Resources

To further assist businesses in Wisconsin, here are some state-specific resources and information related to EINs and taxation:

  • State Tax Agency Information: The Wisconsin state tax agency can provide information on state tax requirements, forms, and filing deadlines. Be sure to familiarize yourself with the state tax obligations for your business type and industry.
  • Business Registration Requirements: In addition to obtaining an EIN, businesses in Wisconsin must also register with the appropriate state agencies. This may include registering your business name, obtaining necessary licenses and permits, and registering for state taxes.
  • Employer Tax Obligations and Filings: Employers in Wisconsin must comply with various state tax obligations, such as withholding state income tax from employee wages and reporting these withholdings to Wisconsin Department of Revenue. Research your business’s specific employer tax requirements in Wisconsin.
  • Local Resources and Assistance for Businesses in Wisconsin: Many local organizations and government agencies in Wisconsin offer resources and assistance for small business owners. These resources may include business counseling, training, and financial assistance programs.

Do I Need to Apply for an EIN If I Also Have Business In Other States?

Yes, if you are operating a business with employees, have a corporation or partnership, or are required to file employment, excise, or alcohol, tobacco, and firearms tax returns, you will need an EIN (Employer Identification Number). If your business operates in multiple states, you only need one EIN for federal tax purposes. However, you may need to register for state-specific tax identification numbers in each state where you conduct business. Check with the Wisconsin Department of Revenue to determine their requirements.


Who is eligible to apply for an EIN in Wisconsin?
Any business owner carrying out trade or business operations in Wisconsin may apply for an EIN.
How do I apply for my Wisconsin EIN?
You can apply for a Wisconsin EIN by mail, fax, or online at the IRS website.
Is there a fee to apply for an EIN in Wisconsin?
No. Applying for an EIN in Wisconsin is completely free.
Can I use my Wisconsin EIN for multiple businesses?
No, each business must have its own EIN, even if they share the same ownership.
Can I get my Wisconsin EIN right away?
Yes, if you apply online at the IRS website you will receive your EIN immediately.
Do I need an EIN if I am the only employee of my business in Wisconsin?
If you are operating as a sole proprietorship, you may use your social security number as your business’s tax ID number instead of an EIN.
How long does it take to get my Wisconsin EIN if I apply by mail?
It can take up to 4 weeks to receive your EIN if you apply by mail.
How long is my Wisconsin EIN valid for?
Your EIN will always be valid but you may need to update your information if your business structure changes.
Is a Wisconsin state tax ID number the same as an EIN?
No, a Wisconsin state tax ID number is different than an EIN.
Can I cancel my Wisconsin EIN?
No, EINs cannot be cancelled, but you can close your business and stop using the EIN.
Do LLCs in Wisconsin need an EIN?
Yes. An LLC in Wisconsin is required to have an EIN.
Can I get a Wisconsin EIN with just a name reservation?
No, you need to have a completed and approved business formation document to apply for a Wisconsin EIN.
Can I change my Wisconsin business’s EIN?
Generally, a business cannot change its EIN except in certain circumstances such as a change in ownership.
What is required to apply for an EIN in Wisconsin?
You need to provide basic information about your business, such as the legal name, address, and type of entity.
Can I get my Wisconsin EIN over the phone?
No, you cannot obtain an EIN over the phone.
Do all businesses in Wisconsin need an EIN?
No, not all Wisconsin businesses require an EIN. Sole proprietorships can use their social security number instead.
Can I apply for a Wisconsin EIN for a nonprofit organization?
Yes, nonprofit organizations in Wisconsin are required to have an EIN.
What happens if I forget my Wisconsin EIN?
You can always retrieve your Wisconsin EIN by contacting the IRS.
Is my Wisconsin EIN confidential?
Yes, your Wisconsin EIN is confidential and should not be shared without authorization.
How can I check the status of my Wisconsin EIN application?
You can call the IRS hotline or check your application status online to see if your EIN has been processed.
Is there a requirement to display my Wisconsin EIN publicly?
No, you do not have to display your Wisconsin EIN publicly, but it should be kept on record for tax purposes.
Can I apply for a Wisconsin EIN as a foreign business owner?
Yes, foreign business owners can apply for a Wisconsin EIN as long as they have an ITIN or social security number.
If I move my business outside of Wisconsin, do I have to get a new EIN?
No, as long as your business structure remains the same, you can keep the same EIN even if you move your business to a different state.
How can I get a copy of my Wisconsin EIN confirmation letter?
You can request a copy by calling the IRS hotline or completing a Form SS-4 with your information.
Is there any limit on the number of EINs I can apply for in Wisconsin?
No, there is no limit. You can apply for as many EINs as you need, as long as each is for a separate business operation.
Can I have multiple EINs for the same business in Wisconsin?
No, you cannot have multiple EINs for the same business, even if it is going through a corporate reorganization.
If I lost my Wisconsin EIN, can I get another one with the same number?
No, you cannot obtain a new EIN with the same number.
What happens if I make a mistake on my Wisconsin EIN application?
You can contact the IRS hotline or submit a written request to correct any mistakes on your EIN application.
Will I receive a physical copy of my Wisconsin EIN?
No, once you receive your EIN, you will only have a digital copy.
What is an EIN in Wisconsin?
An Employee Identification Number (EIN) is a unique identification number that is assigned to businesses by the Internal Revenue Service (IRS) for tax purposes.
Who needs an EIN in Wisconsin?
Businesses, estates, trusts, churches, and non-profit organizations that have employees need an EIN in Wisconsin.
How can I apply for an EIN in Wisconsin?
You can apply for an EIN in Wisconsin online, by fax, by mail or by telephone.
What is the cost to apply for an EIN in Wisconsin?
The application process is free of charge.
Is there a deadline to apply for an EIN in Wisconsin?
There is no deadline to apply for an EIN in Wisconsin.
How long does it take to get an EIN in Wisconsin?
It takes about 15 minutes to apply for an EIN online in Wisconsin. If you apply by mail or fax it can take up to a few weeks to receive your EIN.
What are the requirements to apply for an EIN in Wisconsin?
The only requirements to apply for an EIN in Wisconsin are a valid taxpayer identification number and adopt a principle of public leadership.
Can I use my social security number instead of an EIN in Wisconsin?
Yes, but it is not recommended as it can put your personal information at risk.
How do I make changes to my EIN in Wisconsin?
You can make changes to your EIN in Wisconsin by contacting the IRS.
How long is an EIN valid in Wisconsin?
An EIN is valid indefinitely as long as you keep your business active and comply with applicable tax laws and regulations.
Do I need an EIN for a sole proprietorship in Wisconsin?
No, you can use your social security number for tax purposes or apply for an EIN if you prefer.
How often do I need to renew my EIN in Wisconsin?
There is no need to renew your EIN in Wisconsin. You only need to notify the IRS if your business structure or ownership changes.
Can I use my Wisconsin EIN in other states?
Yes, an EIN is valid in all states.
Where can I get help with my EIN application in Wisconsin?
You can seek help from the IRS or a tax professional in Wisconsin.
Do I need an EIN for a nonprofit organization in Wisconsin?
Yes, a nonprofit organization with employees in Wisconsin needs an EIN.
How can I verify my EIN in Wisconsin?
You can verify your EIN in Wisconsin by contacting the IRS.
What is the purpose of an EIN in Wisconsin?
An EIN is used for federal tax purposes, including filing tax returns and making deposits.
Can I cancel my EIN in Wisconsin?
Yes, you can cancel your EIN in Wisconsin by contacting the IRS and explaining why you want to cancel it.
Can I apply for an EIN for my child’s business in Wisconsin?
Yes, if your child has a business with employees in Wisconsin, they need an EIN.
Can non-US residents or non-US citizens apply for an EIN in Wisconsin?
Yes, as long as they meet the requirements for obtaining an EIN in Wisconsin.
Can I use a PO Box as my address on my EIN application in Wisconsin?
Yes, you can use a PO Box as your address on your EIN application in Wisconsin.
How can I get a copy of my EIN in Wisconsin?
You can request a copy of your EIN notice from the IRS.
When do I need to provide my EIN to employees in Wisconsin?
You need to provide your EIN to employees on their W-2 forms.
Can I change my business name using my EIN in Wisconsin?
No, you need to notify the IRS separately when changing your business name in Wisconsin.
What is the phone number to apply for an EIN in Wisconsin?
The phone number to apply for an EIN in Wisconsin is 1-800-829-4933.
How can I correct my EIN when I entered the wrong information in Wisconsin?
You can correct your EIN by making the necessary changes and notifying the IRS of the mistake.
Can I apply for an EIN when my business hasn’t started yet in Wisconsin?
Yes, you can apply for an EIN for your planned business in Wisconsin.
What if I need to file taxes but don’t have an EIN yet in Wisconsin?
You can use your social security number on your tax return until you receive your EIN in Wisconsin.

Also Read

How to Save Money While Getting Ein for Wisconsin LLC

One of the first steps to saving money while getting an EIN for your Wisconsin LLC is to do your research. There are many online resources available that can guide you through the process of obtaining an Employer Identification Number (EIN) for your business. By taking the time to educate yourself on the necessary steps and requirements, you can avoid wasting money on unnecessary services or assistance.

Another way to save money is to consider using a reliable online filing service to obtain your EIN. These services typically offer flat-rate or low-cost options for obtaining an EIN, making them a more affordable alternative to hiring a lawyer or accountant to assist with the process. Additionally, using an online filing service can save you time and effort, as you can complete the entire process from the comfort of your own home.

When it comes to applying for your EIN, be sure to accurately fill out the necessary forms and provide all the required information. Making mistakes or leaving out important details can result in delays or additional fees, so it’s essential to double-check your application before submitting it. By being thorough and precise in your EIN application, you can avoid costly errors that could set back your business plans.

Another way to save money on your Wisconsin LLC formation is to consider purchasing a package deal that includes the filing of your EIN along with other necessary documents. Many online filing services offer bundled packages that provide everything you need to establish your LLC at a discounted rate. By taking advantage of these package deals, you can save money on individual services and ensure that you have all the paperwork you need to start your business.

Finally, consider reaching out to local business resources or organizations for assistance with obtaining your EIN. Many community groups, small business development centers, and chambers of commerce offer free or low-cost services to help entrepreneurs start and grow their businesses. By networking with other business owners and seeking assistance from these resources, you may be able to access valuable support and guidance without breaking the bank.

In conclusion, there are several ways to save money while getting an EIN for your Wisconsin LLC. By doing your research, using online filing services, accurately completing your application, purchasing package deals, and seeking assistance from local resources, you can minimize your expenses and streamline the process of establishing your business. With a bit of planning and resourcefulness, you can set yourself up for success without overspending on your EIN and LLC formation.


Understanding the importance and uses of an EIN in Wisconsin is crucial for the successful operation of your business. By obtaining and maintaining your EIN, you can ensure compliance with federal and state tax laws, establish a strong financial foundation for your company, and access various resources and opportunities for growth. Be sure to utilize the available resources and support for businesses in Wisconsin to maximize your chances of success.

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