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The Role of EINs for Your LLC - Obtaining and Managing Your Tax ID Number

By: Jack Nicholaisen author image
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Starting a new business can be both exciting and overwhelming, with numerous considerations to take into account. One crucial aspect of setting up a Limited Liability Company (LLC) is obtaining an Employer Identification Number (EIN).

In this comprehensive article, we’ll explore the significance of EINs in your LLC, the requirements, application process, and uses.

We’ll also provide practical tips for obtaining and managing your EIN, as well as case studies to highlight the importance of this unique tax ID number.

By the end, you’ll be well-equipped to handle your EIN with confidence and ease.

Do I Need an EIN for My LLC?

If you’re starting a new business and forming an LLC, it’s important to determine whether or not you need to apply for an EIN. In general, if your LLC has more than one member, you’ll need to obtain an EIN from the IRS. This is because the IRS considers multi-member LLCs as partnerships for tax purposes.

Even if your LLC has only one member, there are still some situations where you may need an EIN. For example, if you plan on hiring employees in the future or opening a business bank account, most financial institutions will require you to have an EIN.

Additionally, if your LLC is taxed as a corporation (either S Corporation or C Corporation), you’ll need to have an EIN.

Overall, obtaining an EIN is a crucial step in setting up your LLC and ensuring that you’re compliant with tax regulations. It’s always best to consult with a legal or tax professional to determine whether or not your specific situation requires an EIN.

Benefits of Getting an EIN for Your LLC

Overall, obtaining an EIN is a wise decision that offers many benefits to LLC owners. It streamlines the process of managing finances and legal obligations while protecting personal information from potential threats.

Having an EIN for your LLC can bring several benefits, including:

1. Separation of Personal and Business Finances

Having an EIN allows you to separate your personal and business finances, which is essential for maintaining accurate accounting records. By using a unique tax ID number for your LLC, you’ll be able to keep track of income and expenses more easily, making it simpler to file your taxes at the end of the year.

2. Hiring Employees

If you plan on hiring employees in the future, having an EIN is crucial. It’s required by law to have one if you plan on paying wages or salaries to employees. By obtaining an EIN early on in your business journey, you’ll be prepared when the time comes to expand your team.

3. Building Business Credit

When you have an EIN, it’s easier to establish credit in your business’s name. This can be useful when applying for loans or opening new lines of credit with vendors or suppliers. Additionally, building business credit can help improve your company’s financial standing over time.

4. Protecting Your Privacy

Using an EIN instead of your social security number (SSN) helps protect your privacy while doing business. When you use your SSN for business transactions, it increases the risk of identity theft and fraud.


If you’re a sole proprietor or single-member LLC, you may wonder if there are any benefits to using your Social Security Number (SSN) instead of an EIN for tax purposes.

While it’s legal to use your SSN, there are some significant drawbacks…

One disadvantage is that using your SSN may put your personal information at risk. Your SSN is a sensitive piece of information that should be protected from identity theft and fraud. By using it for business purposes, you increase the likelihood of it being compromised.

Another disadvantage is that using your SSN can limit your ability to establish business credit. Building business credit is essential for securing financing and establishing credibility with vendors and suppliers. By using an EIN, you can separate your personal and business finances, making it easier to build a strong credit history.

Finally, using an EIN can make it easier to manage your taxes and comply with IRS regulations. An EIN allows you to file taxes separately from your personal taxes, simplifying the process and reducing the risk of errors or audits.

Overall, while it may be tempting to use your SSN for tax purposes, obtaining an EIN offers many benefits for small business owners. Protecting your personal information, building business credit, and simplifying tax management are just a few reasons why obtaining an EIN is worth considering.

EIN Requirements

An EIN, also known as a Federal Tax Identification Number, is a unique nine-digit number assigned by the Internal Revenue Service (IRS) to businesses operating in the United States. It is used to identify your business for tax purposes, and is required for several reasons, including:

1. Filing tax returns and other business-related forms

2. Opening a business bank account

3. Applying for business licenses and permits

4. Complying with IRS regulations, such as hiring employees and paying payroll taxes

Most LLCs are required to have an EIN, even if they do not have employees. However, there are some exceptions. For example, a single-member LLC without employees or excise tax liability may use the owner’s Social Security Number (SSN) instead of an EIN. It’s essential to check the IRS guidelines to determine if your LLC needs an EIN.

How Long does it Take t get an EIN?

The process of obtaining an EIN for your LLC is relatively straightforward, and you can do it online or by mail. If you apply online, you can receive your EIN immediately after completing the application. On the other hand, if you apply by mail, it can take up to four weeks to receive your EIN.

It’s essential to note that the processing time may be longer during peak filing season (January through April). Therefore, it’s crucial to plan accordingly and apply for your EIN well in advance to avoid any delays in setting up your business.

Application Process -

Applying for an EIN is a straightforward process that can be done online, by mail, or by fax. Here are the steps for each method:

Online Application

The quickest and easiest way to obtain an EIN is through the IRS website. The online application is available for businesses located in the United States or its territories. Follow their step-by-step instructions, and upon completion, your EIN will be issued immediately.

Mail or Fax Application

If you prefer to apply by mail or fax, download and complete Form SS-4. Mail the completed form to the following address:

Internal Revenue Service Attn: EIN Operation Cincinnati, OH 45999

Alternatively, you can fax the form to (855) 641-6935.

The processing time for mail applications is approximately four weeks, while faxed applications typically take four business days.

Uses of an EIN

Aside from meeting IRS requirements, an EIN offers several benefits for your LLC:

1. Establishing business credit: An EIN helps you build your business’s credit history, separate from your personal credit. This can lead to better financing options and interest rates for your business.

2. Maintaining privacy: Using an EIN instead of your SSN can help protect your personal information from potential identity theft.

3. Adding legitimacy: Having an EIN demonstrates that your business is a separate legal entity, giving customers and partners more confidence in your professionalism.

4. Simplifying tax preparation for multi-member LLCs: If your LLC has more than one member, each member’s share of the profits and losses needs to be reported on their individual tax returns. An EIN makes it simpler to track these figures and ensures that each member receives the appropriate documentation needed for their taxes.

Practical Tips for Obtaining and Managing Your EIN

  • Apply early: Obtain your EIN as early as possible to avoid delays in opening a bank account or filing tax returns.

  • Keep your EIN secure: Treat your EIN with the same care as your SSN, as it can be used to access sensitive business information.

  • Update the IRS: If your business information changes, such as your address or responsible party, inform the IRS using Form 8822-B.

  • Closing an EIN: If you need to close your EIN, notify the IRS by mail, including a letter explaining your reason for closing the account and any relevant tax return forms.

EINs play a crucial role in the success of both large and small businesses alike. Many companies rely on their EINs to manage their tax obligations, open bank accounts, and conduct other essential business operations. EINs also contribute to a company’s credibility and professionalism, attracting both customers and business partners.

Obtaining and managing your EIN is a critical aspect of running a successful LLC. It not only meets IRS requirements but also provides benefits such as establishing business credit and protecting your personal information.

By following the steps outlined in this article, you can confidently obtain and manage your EIN, setting your business up for success.

Don’t wait any longer…

Reach out so we can help you start your EIN application today!


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About the Author

jack nicholaisen
Jack Nicholaisen

Jack Nicholaisen is the founder of After acheiving the rank of Eagle Scout and studying Civil Engineering at Milwaukee School of Engineering (MSOE), he has spent the last 4 years disecting the mess of informaiton online about LLCs in order to help aspiring entrepreneurs and established business owners better understand everything there is to know about starting, running, and growing Limited Liability Companies and other business entities.