When you’re researching a company, one important piece of information you might encounter is its Employer Identification Number (EIN).

This unique nine-digit number is assigned by the Internal Revenue Service (IRS) to business entities operating in the United States for identification purposes.

But what if you have an EIN and need to find the company associated with it? That’s where a reverse EIN lookup comes in handy.

What Is a Reverse EIN Lookup?


A reverse EIN lookup is a process that allows you to find a company’s name and related information using its Employer Identification Number (EIN).

An EIN is a unique nine-digit number assigned by the Internal Revenue Service (IRS) to businesses operating in the United States for identification purposes.

When your goal is to discover the name of a company with only its EIN, a reverse EIN lookup can be quite helpful.

There are several reasons you might want to conduct a reverse EIN lookup, such as:

  • Verifying the authenticity of a company
  • Researching potential business partners
  • Ensuring compliance with tax regulations

To perform a reverse EIN lookup, you can use various resources, both online and offline. These may include:

  1. Commercial databases: Some organizations compile databases containing EINs and related information, which can be accessed through paid subscription services. Be cautious about using any services that claim to offer “free” reverse EIN lookups, as they may have inaccurate data or pose privacy risks.
  2. Public records: If the company you’re researching is publicly traded, you may be able to find EIN information in their filings with the Securities and Exchange Commission (SEC). This can include annual reports, quarterly financial statements, and other required disclosures.
  3. Government agencies: In some cases, you may need to contact the IRS directly to obtain information about a company using its EIN. However, this method may have limitations due to privacy concerns and the IRS’s workload.

By conducting a reverse EIN lookup, you can unlock important information about a business entity and ensure its credibility.

Just remember to use reputable sources and respect privacy regulations when searching for a company’s EIN and related information.

Why Would Someone Need a Reverse EIN Lookup?

Verifying Business Information

A reverse EIN lookup can be beneficial when you need to verify information about a company.

With the company’s EIN in hand, you can look up the organization’s name, address, and contact information.

This can be especially helpful when dealing with multiple companies with similar names or when you need to confirm the legitimacy of a company you’re considering partnering with or working for.

Preventing Fraud

Another essential use case for reverse EIN lookups is in preventing fraud.

By checking a company’s EIN against the business information provided to you, you can detect inconsistencies that could indicate fraudulent activity.

For instance, you may receive a suspicious invoice from a vendor claiming to be a well-established organization.

By cross-referencing the EIN on the invoice with a reverse EIN lookup, you can quickly determine whether the business is genuine or an impostor attempting to defraud you.

Performing Due Diligence

Finally, one of the most crucial applications of reverse EIN lookups is performing due diligence on companies you plan to work alongside or invest in.

By using a reverse EIN lookup to access a business’s historical records, you can review essential information such as their past revenue levels, financial status, and any litigation they may have been involved in across their history.

This information is invaluable when making critical business decisions and can help you make informed choices for your company’s future.

How to Do a Reverse EIN Lookup

Online Public Databases

To conduct a reverse EIN lookup, first try searching through online public databases.

Many government and nonprofit websites provide searchable databases, and entering the Employer Identification Number (EIN) will yield the associated company’s information.

For instance, the Internal Revenue Service (IRS) allows EIN lookup by calling their Business & Specialty Tax Line at 800-829-4933 (Monday through Friday, 7:00 a.m. – 7:00 p.m. local time).

Keep in mind that only authorized persons can receive the information over the phone.

Using Third-Party Companies

Another option for conducting a reverse EIN lookup is by using third-party companies, such as LexisNexis.

These companies often have more comprehensive databases and can provide more detailed information about the company you’re searching for.

To use LexisNexis, you’ll need to:

  1. Register for an account
  2. Pay for a membership (fees vary based on the number of reverse lookups you need)
  3. Enter the EIN into the search bar and check the company’s information

Keep it brief and avoid making exaggerated or false claims when using these services. Remember to use a friendly tone of voice, there are humans on the other end of the line. Happy searching!

Limitations of Reverse EIN Lookups

Accuracy of Information

One limitation you might face while performing a reverse EIN lookup is the accuracy of the information obtained.

Due to a variety of factors, including outdated databases and clerical errors, the information associated with an EIN might not always be up-to-date or correct.

This could lead to confusion and potential issues for your business.

Privacy Concerns

Another concern associated with reverse EIN lookups is privacy. In most cases, it’s not possible to perform a reverse lookup using a business’s tax ID number, especially if it’s a private entity.

This helps protect the privacy of businesses and their proprietary information.

Non-profit organizations, on the other hand, are generally required to disclose their EIN to donors, making it somewhat easier to access information about them.

Nonetheless, be sure to respect the privacy of these organizations by only using their EIN for legitimate purposes, such as verifying their tax-exempt status.

Alternative Methods for Obtaining Business Information

In addition to reverse EIN lookups, there are several other ways you can find information about a business. Here are a couple of alternative methods:

Searching by Business Name

You can often find valuable information by searching for a business using its name. Start by using search engines like Google or business directories such as Yelp, LinkedIn, or the Better Business Bureau.

These websites may provide details like:

  • Contact information
  • Physical and business addresses
  • Reviews and ratings

Another source you can tap into are online databases like Dun & Bradstreet or Hoovers.

These resources contain comprehensive information about companies, including their financials, employee headcounts, and executive information.

Contacting Government Agencies

If your search by business name doesn’t yield the desired results, consider contacting government agencies for help.

Many businesses are required to register their details with state or federal agencies, and that information may be accessible to the public. Here are a few examples of government resources you can use:

  • Secretary of State’s Office: In most states, businesses register their name and other details with the Secretary of State. Visit their website or call the office for information on how to perform a business search.
  • City or County Clerk’s Office: Depending on the location, some businesses may be registered with local agencies such as a city or county clerk’s office. They can provide information about business licenses and possibly even ownership data.
  • Internal Revenue Service (IRS): Though this method may be less direct, you can sometimes request information from the IRS related to a business, such as the Tax Exempt Organization search. It’s important to note that the IRS won’t provide all details, and this approach may be limited in scope.

Keep in mind that obtaining business information via government agencies may require filling out forms, paying fees, or submitting any identification to prove your eligibility for accessing the data.

Quick Summary

In the world of business and tax administration, you might come across something called a reverse EIN lookup.

This process allows you to identify the company associated with an Employer Identification Number (EIN).

It can be particularly useful when you have a company’s EIN but aren’t sure about the company’s name or details.

Keep in mind that performing a reverse EIN lookup is not always easy or free of charge.

In most cases, you may not be able to do a reverse lookup on a tax ID in the US without additional information, like the company’s name and address.

However, non-profits are an exception, as they often have to publish their EIN to donors, which can make it easier to identify them.

To conduct a reverse EIN lookup, you might need to register for an account and pay a membership fee on platforms like LexisNexis.

The fees may vary based on the number of reverse lookups you need to perform.

Remember to use reliable and trustworthy sources when trying to perform these lookups, and avoid making false assumptions or claims based on limited information.

A reverse EIN lookup can be a handy tool for identifying companies associated with a specific EIN.

However, it may require additional information and sometimes a payment for access to a professional database.

Always verify your findings with reputable sources and make sure you’re well-informed about the process and its limitations.