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How to choose and register a domain name for your business

Your domain is your website address, such as yourcompany.com.br. It is the base for everything: website, professional email and ads. A .com.br costs about R$ 40 (BRL) per year at Registro.br and should be registered under your company's tax ID (CNPJ) or your own (CPF), never in the name of whoever builds the site.

ON Network · Updated on November 1, 2026

.com.br or .com?

How to choose a good name

Step by step

  1. Check whether the name is available at Registro.br (for .com.br).
  2. Create an account with your company details (CNPJ) or the owner's (CPF).
  3. Pay the annual fee and turn on auto-renewal so you never lose the domain.
  4. Point the domain to your website hosting (DNS). Your web developer usually handles this.

Common mistakes

At ON Network (page in Portuguese), we help register the .com.br under your CPF or CNPJ and point it to your site at no extra cost. See also how to choose hosting.

Frequently asked questions

How much does a .com.br domain cost?

About R$ 40 per year at Registro.br, renewed annually.

Can I register a .com.br with a CPF?

Yes. Registro.br accepts registration with a CPF or CNPJ. For businesses, the CNPJ is the better choice.

Does the domain include the website?

No. The domain is only the address. You also need hosting (where the site lives) and the website itself.

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