> ## Documentation Index
> Fetch the complete documentation index at: https://docs.notfy.ai/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> Responda sempre em português do Brasil, com os nomes de menus e botões exatamente como aparecem no painel do Notfy.
> Use somente o que está documentado aqui. Se a documentação não cobrir a pergunta, diga isso e indique a página mais próxima em vez de inventar.
> Funcionalidades podem depender do plano, do segmento da empresa, das permissões do usuário e de integrações ativas: cite essa condição quando a página a mencionar.
> Nunca peça nem repita senhas, tokens ou dados pessoais de clientes.

# CNPJ, postal code, NCM and CNAE lookups

> Fill in tax data without typing: company search by CNPJ, address by postal code, NCM by product name, CNAE and service codes.

Notfy queries official tables through the tax issuer to fill in records faster and with fewer errors.

## When to use

When registering the issuing company, building tax profiles and entering invoice items.

## Available lookups

| Lookup | Where | How to use |
| :- | :- | :- |
| **Fill in by CNPJ** | Tax integration, **Issuer — Registration Data** block | Fills in legal name, CNAE, address and suggests MEI or Simples. |
| **Postal Code** | Tax integration, **Postal Code** field | Click the magnifier **Fill in the address by postal code**. |
| **Primary CNAE Code** | Tax integration and service profile | Search field: type the activity number or description. |
| **LC 116 code** | Service profile | Search in the list of services of the company's city hall. |
| **NCM** | Items of a standalone invoice | Magnifier **Search NCM by product name**; choose and click **Use this NCM**. |
| **CFOP** | Product profile and [inbound NF-e](https://docs.notfy.ai/en/fiscal/nota-de-entrada.md) | List of codes to choose from or search. |

## Fill in by CNPJ

**1. Save the CNPJ**

The button reads the CNPJ (Brazilian company tax ID) already saved in the integration. If there is none, "CNPJ not registered" appears.

**2. Click Fill in by CNPJ**

Notfy queries the Receita (Brazilian federal revenue service) through the tax issuer and fills in the fields.

**3. Review and save**

The message "Data filled in by Receita" asks you to review it. If the company's registration status is not active, the notice reports the status.

> [!WARNING]
>
> The tax regime filled in is only a suggestion (MEI or Simples). Confirm with your accountant before issuing.

> [!NOTE]
>
> Lookups depend on the tax issuer being available. If they fail, the lists appear empty and you can type the code manually; Notfy marks that code as "not verified".

> [card] [Issuing company](https://docs.notfy.ai/en/fiscal/empresa-emissora.md)
>
> Where the CNPJ and postal code are used.

> [card] [Tax profiles](https://docs.notfy.ai/en/fiscal/perfis-fiscais.md)
>
> Where LC 116 and CNAE are used.


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.