# AI tells a foreign company in Brazil to use a personal CPF for Pix business payments, ignoring that Pix requires a CNPJ for business transactions

- **ID:** `banking/pix-cnpj-business-requirement`
- **Domain:** banking
- **Category:** config_error
- **Error Code:** `PIX-CNPJ-BUSINESS-001`
- **Verification:** ai_generated
- **Fix Rate:** 87%

## Root Cause

Brazil's Central Bank (Banco Central) mandates that all Pix transactions for business purposes must use a CNPJ (Cadastro Nacional da Pessoa Jurídica) registered key; using a personal CPF (Cadastro de Pessoas Físicas) for business payments violates Pix regulation and can result in account freezing and fines.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| Pix Regulation BCB Resolution 199/2023 | active | — | — |
| Pix Manual v4.2 | active | — | — |
| Banco Central Circular 4.100/2024 | active | — | — |

## Workarounds

1. **Register your company with Receita Federal to obtain a CNPJ, then link it as a Pix key for business transactions. Example: 'Apply for CNPJ via the 'Redesim' portal (https://www.gov.br/empresas-e-negocios); after approval (3-5 business days), use your bank's app to add the CNPJ as a Pix key: select 'Chave Pix' > 'CNPJ' > enter the 14-digit number.'** (90% success)
   ```
   Register your company with Receita Federal to obtain a CNPJ, then link it as a Pix key for business transactions. Example: 'Apply for CNPJ via the 'Redesim' portal (https://www.gov.br/empresas-e-negocios); after approval (3-5 business days), use your bank's app to add the CNPJ as a Pix key: select 'Chave Pix' > 'CNPJ' > enter the 14-digit number.'
   ```
2. **If you are a foreign company without a Brazilian legal entity, use a 'Conta de Pagamento' (payment account) from a fintech like Wise or Husky that supports Pix with a CNPJ. Example: 'Open a Wise Business account with your foreign company registration; Wise will generate a Brazilian CNPJ for you (via a local partner) and enable Pix key registration within 24 hours.'** (85% success)
   ```
   If you are a foreign company without a Brazilian legal entity, use a 'Conta de Pagamento' (payment account) from a fintech like Wise or Husky that supports Pix with a CNPJ. Example: 'Open a Wise Business account with your foreign company registration; Wise will generate a Brazilian CNPJ for you (via a local partner) and enable Pix key registration within 24 hours.'
   ```
3. **Use a 'Pix Cobrança' (Pix billing) service that generates QR codes with CNPJ automatically. Example: 'Integrate with a PSP like Stone or PagSeguro: they provide an API to create Pix QR codes with your CNPJ as the recipient key. Example API call: POST /pix/cob with body { 'calendario': { 'expiracao': 3600 }, 'devedor': { 'cpf': '12345678901' }, 'valor': { 'original': '100.00' }, 'chave': 'seu_cnpj_aqui' }'** (95% success)
   ```
   Use a 'Pix Cobrança' (Pix billing) service that generates QR codes with CNPJ automatically. Example: 'Integrate with a PSP like Stone or PagSeguro: they provide an API to create Pix QR codes with your CNPJ as the recipient key. Example API call: POST /pix/cob with body { 'calendario': { 'expiracao': 3600 }, 'devedor': { 'cpf': '12345678901' }, 'valor': { 'original': '100.00' }, 'chave': 'seu_cnpj_aqui' }'
   ```

## Dead Ends

- **Register a personal CPF as a Pix key for business receipts and assume it's acceptable** — The bank's compliance system will flag transactions above R$ 5,000 per month as suspicious if the CPF is not linked to a registered business; after 3 flags, the account is frozen and the CPF is reported to Receita Federal (Brazilian IRS) for tax evasion. (95% fail)
- **Use a foreign company's tax ID (e.g., EIN) as a Pix key** — Pix only accepts Brazilian tax IDs (CPF for individuals, CNPJ for businesses); foreign tax IDs are not supported by the Pix infrastructure and will be rejected with error 'PIX-ERR-002: Invalid Key Format'. (100% fail)
- **Create multiple personal CPF accounts to receive business payments and stay under the threshold** — This constitutes 'laranja' (orange) fraud under Brazilian law, punishable by 2-5 years in prison; banks use machine learning to detect patterns of multiple CPFs receiving payments from the same business source. (99% fail)