Key Uses of the RFC

The **Registro Federal de Contribuyentes (RFC)** is your official tax identifier, essential for all formal economic activity in Mexico.

Your Financial and Business ID

While the CURP proves who you are, the **RFC** is your unique number that allows you to participate in the formal economy. It is required for a wide range of tax-related and commercial activities.

• Issuing Legal Invoices (Facturas)
  This is the most significant difference. If you are a freelancer, consultant, or business owner, you must have an RFC to issue a formal, legal invoice for the goods or services you sell. The CURP is not a substitute for this purpose.
• Tax Filings and Deductions
  The RFC is your official number for all tax matters. You use it to file your annual tax return, declare income from various sources, and formally apply for tax deductions for expenses like medical bills or school tuition.
• Business Formation
  If you plan to formally register a company or operate as a sole proprietor in Mexico, you will need an RFC. It links your business entity to the tax authority and is necessary to conduct legal commercial operations.
• Commercial Transactions
  For any large-scale or commercial transactions that require a legal paper trail, such as importing or exporting goods, the RFC is a non-negotiable requirement for interacting with customs and other regulatory bodies.

Your RFC empowers you to engage in formal economic activities, ensuring you are a recognized participant in Mexico’s commercial landscape.