How to Verify Tax ID Numbers Online: A Step-by-Step Guide

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As we approach tax season, it becomes increasingly important for businesses and individuals to ensure their records are accurate and up-to-date. A crucial step in this process is verifying Tax Identification Numbers (TINs) with the Internal Revenue Service (IRS). This article provides a detailed guide on how to verify TINs online, incorporating key points and headings from top Google search results and the “People also ask” section.

Why Verify TINs?

Verifying TINs can help prevent errors or fraud when filing taxes, avoid penalties for incorrect filings, and protect against identity theft. It is also necessary when conducting business transactions such as hiring employees, opening bank accounts, or applying for credit.

What is a Tax ID Number?

A Tax ID number, also known as an Employer Identification Number (EIN), is a unique nine-digit number assigned by the IRS to businesses, nonprofits, and other entities operating in the United States. This number is used to identify a business entity and is crucial for several business-management and legal situations, including applying for business loans or credit cards, filing and paying taxes, issuing 1099 forms, and opening a business bank account.

The Process of Verifying Tax ID Numbers Online

To verify a TIN online, you can use the IRS website or third-party services such as InfoPay or Paycheck Records. Here’s a step-by-step guide on how to verify a TIN online through the IRS website:

  1. Visit the IRS website for verifying employment tax documents.
  2. Click the “Verify Your Employment Eligibility” button.
  3. Enter the company information, including name and address.
  4. Enter the employee’s information, including full name and Social Security number if requested.
  5. Submit your request.

Note that sole proprietors who use their Social Security Number as their business entity’s tax ID number do not need to submit Form SS-4 unless other requirements apply.

Tips for Successful Verification

Here are some tips to ensure successful validation:

  • Double-check all entered data before submitting your request.
  • Use official documents from trusted sources (e.g., W-2 forms).
  • Keep a record of all verification requests, including date, time, and confirmation number.

Verifying EIN for Charitable Organizations

If you need to verify the EIN of a charitable organization, you can use the IRS Tax Exempt Organization Search tool or the GuideStar database. These organizations are also known as exempt organizations because they have a tax-exempt status, and their information must be public record.

Can You Verify Someone Else’s EIN?

Yes, you can verify someone else’s EIN, but there are limitations. You can call the company’s finance department or research whether the company has registered with the Securities and Exchange Commission. The SEC’s Edgar system requires that a company’s EIN appears on all documents. Alternatively, you could hire a verification service to find the EIN.


Verifying TINs is a crucial part of tax compliance, identity protection, and fraud prevention. By following the above step-by-step guide and tips for successful verification, you can ensure that your records are accurate while avoiding penalties or identity theft. Be sure to conduct TIN checks regularly to stay compliant with IRS regulations.


Can I verify any tax ID number online?

No, you can only verify the Federal Employer Identification Number (FEIN), which is also known as the Employer Identification Number (EIN).

Is it free to verify tax ID numbers online?

Yes, there are several ways to check EINs online at no cost. You can visit the IRS website and search for “EIN,” then select “Employer Identification Number (EIN)” from the drop-down menu under the “I need to” section.

What information do I need to provide when verifying a tax ID number online?

To obtain accurate results, make sure you have all required information of the Business entity or Non-profit organizations available when verifying their EINs. This usually includes the name of the business/organization, business address, entity type, company structure, and if possible, social security number or individual taxpayer identification number (ITIN).