Not like CPF/CNPJ. Basic validation uses length and IRS-valid prefixes.
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Generate synthetic EINs using official valid IRS prefixes for company fixtures and tax-flow tests.
The Employer Identification Number (EIN) is the 9-digit federal tax identifier the IRS assigns to companies and other entities in the U.S., the corporate equivalent of a person's SSN. It is written as XX-XXXXXXX: the first two digits are the prefix (tied to the IRS campus or online issuance) and the next seven are the sequence. The EIN has no check digit; basic validation checks the length and whether the prefix belongs to the IRS-published list. A "valid" EIN here only means it uses an accepted prefix, not that the company exists, is active or belongs to anyone. This generator creates synthetic numbers in the browser as test data, without querying the IRS or creating any entity.
The EIN has 9 digits in the XX-XXXXXXX format. The two leading digits are the prefix, historically tied to the IRS campus that issued the number or to online issuance; the remaining seven are a sequence assigned within that prefix.
Unlike the CNPJ, the EIN has no check digit to recompute. Plausibility is enforced by list: the generator only draws prefixes that appear among the IRS-valid ones and avoids the 0000000 suffix, producing a realistic-looking number without inventing an impossible prefix.
First case: B2B and tax sign-ups. Forms that ask for an EIN usually validate length, mask and sometimes the prefix. To exercise the happy path you need a number with an accepted prefix, which is what the generator provides, without using a real company's EIN.
Second case: fixtures and integrations. Environment seeds, API contracts and automated billing or payroll tests need several fictitious companies. Generating coherent EINs in bulk keeps the test data decoupled from real entities.
The generated number is fictitious. It must not be used to open accounts in a company's name, file taxes, impersonate an entity or defraud registrations, using tax identifiers deceptively is a crime.
Technical limit: even with an accepted prefix, the EIN does not prove that an entity exists, is active or belongs to anyone. Systems that query the IRS or services like TIN Matching will reject the number if it does not match a real record.
Paste the code into your HTML and the tool shows up on your page, without J-Kit's navigation and ads. It still runs in the browser of whoever visits your site.
<iframe
src="https://jkit.tools/embed/en-US/ein-generator"
width="100%"
height="600"
style="border:0"
loading="lazy"
title="EIN Generator"
></iframe>These references help contextualize formulas, standards, APIs and limitations used on this page. They do not replace professional validation when a result has legal, financial, medical or operational impact.
Not like CPF/CNPJ. Basic validation uses length and IRS-valid prefixes.
Generation happens locally in the browser. Analytics receives only action, status, type and format, never the generated EIN.