CNPJ MEI Generator (root /0001)

MEI CNPJ: Brazil's simplified micro-entrepreneur tax ID

The MEI (Microempreendedor Individual — Individual Micro-Entrepreneur) is a special legal-person category created by Complementary Law 128/2008 to formalise self-employed workers in Brazil. A MEI receives a standard 14-digit CNPJ (Brazil's federal company tax ID), built with the same modulus-11 algorithm and check digits as any other CNPJ — what makes it a "MEI CNPJ" is the registration tier inside Receita Federal, not the number's structure.

This generator outputs mathematically valid but fictional CNPJ numbers in the MEI format for testing forms, mock databases, QA pipelines, and tutorials. They will pass any modulus-11 validation but are not linked to a real registration at Receita Federal — never use them to issue invoices, open bank accounts, or commit fraud.

Revenue ceiling and allowed activities

The current annual revenue ceiling (2024) is R$ 81,000 (roughly USD 16,000), proportional to months active in the first year. An approved bill (PL) raises it to R$ 144,900 starting 2026. Exceed the ceiling by up to 20% and you stay MEI for the year (paying retroactive Simples Nacional); exceed it by more and you are forcibly reclassified as ME (regular small business).

Permitted activities are listed by CGSN Resolution: mostly retail and manual services — hairdresser, manicurist, bricklayer, painter, seamstress, snack vendor, ride-share driver, school-bus driver, online seller. Excluded: regulated intellectual professions (doctor, lawyer, engineer), interstate cargo transport, and franchises.

DAS-MEI: the flat monthly tax

• INSS: 5% of the minimum wage (~R$ 70) — grants retirement, sick leave, maternity pay, and survivor's pension.
• ICMS: R$ 1 flat for commerce/industry MEIs.
• ISS: R$ 5 flat for service MEIs.
• Total: roughly R$ 70-80/month, regardless of actual revenue (as long as you stay under the ceiling).

No invoice (NF) is mandatory for sales to individual consumers (PF), but invoices are required for sales to other companies (PJ). Bookkeeping is minimal — a monthly revenue log is enough.

Registration, employees, and disqualification

Registration is free and done online at gov.br/mei (formerly Portal do Empreendedor). A MEI may hire at most one employee, paid the minimum wage or the category's wage floor. Two CPFs cannot share a MEI, and one CPF can hold only one MEI at a time.

Disqualification (desenquadramento) is automatic when you exceed the revenue ceiling, hire a second employee, or pick up an activity outside the CGSN list — Receita reclassifies you as ME under Simples Nacional and the tax burden jumps from a flat ~R$ 80 to a percentage of revenue.

Pitfalls and "pejotização"

• Disguised employment: many companies require contractors to register as MEI to avoid CLT (labour law) costs. Labour courts increasingly recognise this as fraud and order back-payment of CLT benefits — the practice is called pejotização.
• Annual DASN-SIMEI: a yearly revenue declaration is mandatory (deadline May 31). Missing it triggers fines and eventual MEI cancellation.
• Idle MEIs still owe the monthly DAS — to stop, formally close (baixa) the CNPJ at gov.br/mei.
• Credit access: a MEI CNPJ unlocks business credit lines, PIX merchant accounts, and PJ bank accounts at lower fees than PF.

FAQ

Are the generated CNPJs real? No. They are mathematically valid (mod-11 check digits pass) but have no registration at Receita Federal. They are for testing and learning, not legal use.

Can I use one of these to register as a MEI? No. Registration happens at gov.br/mei and Receita assigns the CNPJ to you — you cannot pick one.

Can a single CPF have multiple MEIs? No. One CPF = one MEI. To run multiple businesses under one MEI, you can register up to one secondary activity (CNAE) at registration time.

Is the MEI CNPJ format different from a regular CNPJ? No — same 14 digits, same algorithm, same check-digit math. The "MEI" status lives in Receita's database, not in the number itself.

What happens if I exceed the revenue ceiling? Up to 20% over: pay retroactive Simples Nacional rates for the year and stay MEI. Over 20%: forced reclassification to ME, effective the following January.