No. An EIN and a tax-exempt number are not the same thing, mostly because there is no such thing as a standalone “tax exempt number.” The IRS assigns every business entity a single nine-digit Employer Identification Number, and when an organization is later approved for tax-exempt status, the IRS links that status to the same EIN it already has. So when people ask whether an EIN is the same as a tax-exempt number, the honest answer is that the EIN is the number, and tax-exempt status is a separate legal designation attached to it.
What an EIN Actually Is
An Employer Identification Number is a unique nine-digit code, formatted XX-XXXXXXX, that the IRS assigns to business entities operating in the United States.1Legal Information Institute. Employer Identification Number (EIN) Think of it as a Social Security Number for an organization. It tells the IRS which entity is filing returns, running payroll, and opening bank accounts. An EIN never expires, and the IRS never reassigns one to a different entity.
Corporations, partnerships, LLCs, trusts, estates, and tax-exempt organizations all need an EIN. So does any business with employees or one that withholds taxes on payments to non-resident aliens.2Internal Revenue Service. Employer Identification Number Having an EIN says nothing about whether your organization owes tax. Millions of for-profit companies have EINs and pay income tax on every dollar of profit. The number is just an identifier.
Getting one is free. The fastest route is the IRS online application, which issues the EIN immediately upon approval. You can also fax or mail Form SS-4, though both methods take days or weeks. Any third-party website charging a fee for the EIN itself is charging for something the IRS gives away.
What Tax-Exempt Status Actually Is
Tax-exempt status is a legal designation the IRS grants to organizations whose activities serve a recognized purpose under the Internal Revenue Code. The most familiar version is Section 501(c)(3), which covers organizations operated for charitable, religious, educational, or scientific purposes.3Internal Revenue Service. Exempt Organization Types But 501(c)(3) is only one of more than two dozen categories. The code also recognizes social welfare organizations under 501(c)(4), business leagues under 501(c)(6), and social clubs under 501(c)(7), among many others.4Internal Revenue Service. Other Tax-Exempt Organizations
Here is the part that matters for your question: when the IRS approves an application for exemption, it does not issue a new number. It issues a determination letter. That letter confirms the organization’s existing EIN and identifies the specific code section the organization qualifies under. The letter is the proof of exempt status. The EIN remains the identifier.
So if someone asks a nonprofit for its “tax-exempt number,” what they actually need is the EIN plus, in many cases, a copy of the determination letter. The EIN alone will let them look the organization up in the IRS database; the letter is the official document establishing exemption.
Why the Two Get Confused
The confusion is built into the sequence. An organization cannot even apply for tax-exempt status without a valid EIN already in hand. The IRS requires an EIN before it will accept Form 1023 (the full application) or Form 1023-EZ (the streamlined version).5Internal Revenue Service. Form 1023 – EIN Required to Apply for Exemption Founders get the EIN first, then file for exemption, and once the determination letter arrives, that same EIN becomes the number everyone references in conversations about the organization’s tax status. The number did not change. Its meaning in context did.
The sequence looks like this for a new nonprofit:
- Incorporate under state law as a nonprofit corporation, or organize as a trust or association.
- Apply for an EIN through the IRS, which takes minutes and costs nothing.
- File Form 1023 or Form 1023-EZ with the IRS and pay the user fee.
- Receive the determination letter confirming exempt status and the code section it falls under.
After step four, the EIN does double duty. It identifies the entity for all federal tax purposes, and combined with the determination letter, it is the proof of exempt status that banks, state agencies, and donors want to see.
How Donors and the Public Verify Exempt Status
Because there is no separate tax-exempt number, verification runs through the EIN. Anyone can look up an organization’s current status using the IRS Tax Exempt Organization Search tool. The database lets you confirm whether an organization is eligible to receive tax-deductible contributions, view Form 990 filings, check for automatic revocations, and read the determination letter.6Internal Revenue Service. Tax Exempt Organization Search Donors search by name or EIN, and the result tells them at a glance whether the IRS currently recognizes the organization as exempt.
Exempt organizations are also required to make their application for exemption and their annual returns available for public inspection on request.7Internal Revenue Service. Exempt Organization Public Disclosure and Availability Requirements Between the public database and the inspection requirement, verifying an organization’s exempt status is straightforward, and it never requires a number other than the EIN.
What the EIN and the Determination Letter Each Prove
Keeping these straight is easier if you treat them as answering different questions.
The EIN answers the question of identity. It tells the IRS, and anyone else, which entity you are. Every business entity has one, whether it owes tax or not.
The determination letter answers the question of status. It tells the IRS, and anyone else, that the entity has been approved as exempt from federal income tax under a specific section of the Internal Revenue Code. Without that letter, the EIN alone proves only that the entity exists in IRS records.
A for-profit LLC has an EIN but no determination letter and is fully taxable. A 501(c)(3) charity has the same kind of EIN and a determination letter, and that combination is what makes it exempt in the eyes of the IRS, donors, and most state agencies.
A Note on State Taxes
One point worth flagging because it trips up a lot of new organizations: a federal determination letter does not exempt an organization from state taxes. Nonprofit status is a state law concept, and federal tax exemption is a separate federal designation.8Internal Revenue Service. Frequently Asked Questions About Applying for Tax Exemption Most states require a separate application for state income tax exemption, and sales tax and property tax exemptions usually involve additional filings with the state revenue department. Some states will issue their own state-level exemption certificates, which do sometimes carry their own identifying numbers. So if a vendor or state agency asks for a “tax-exempt number,” it may actually be asking for a state-issued exemption certificate rather than the federal EIN. Ask which one they mean. The answer determines which document you hand over.