What is a Standard Invoice?

A CFDI Ingreso is the standard electronic invoice in Mexico. Issue one every time you sell goods or services to a buyer with a valid RFC. It is stamped by SAT via a PAC — Brinta handles this automatically.

When to issue a CFDI Ingreso

Field by Field

Root Level

supplier_company_id

UUID of the issuing company in Brinta. Determines the Emisor in the CFDI — RFC, fiscal regime, and address are pulled from this record automatically.

invoice_serie

Invoice series (SAT: Serie). A prefix that groups invoices — e.g. FE, A, B. Must be pre-registered with SAT. Max 25 alphanumeric characters, no spaces.

invoice_number

Invoice folio (SAT: Folio). Sequential number within the series. Must be unique per invoice_serie.

invoice_date

Issuance date in YYYY-MM-DD. Must be the current day — SAT does not allow backdating or future dating.

reason

SAT field c_UsoCFDI. How the buyer will use the invoice for tax purposes. Ask the buyer if unsure.

export_reason

SAT field c_MotivoTraslado. Required for all CFDI 4.0 invoices.

currency and exchange_rate

• Use MXN and omit exchange_rate (or set to 1) for peso invoices.
• For foreign currency: set the ISO 4217 code (e.g. USD) and include the SAT official exchange rate for the invoice date in exchange_rate.

payment_method.type

How the buyer is paying. Affects whether a Complemento de Pago will be required later.

buyer

company.name and company.legal_name

Must match the buyer's SAT registration exactly — SAT cross-references this against the RFC.

• Businesses: full legal name (e.g. CLIENTE EJEMPLO S.A. DE C.V.).
• Individuals: full name (e.g. JUAN PEREZ GARCIA).

company.type

company.address.postal_code

Buyer's fiscal postal code as registered with SAT. Required for CFDI 4.0. Must be 5 digits for Mexican buyers.

tax_registrations[].number

Buyer's RFC.

tax_registrations[].status

SAT fiscal regime (c_RegimenFiscal). The buyer must provide this.

items[]

Each item maps to a Concepto in the CFDI.

unit_amount and amount

Both are before taxes.

• unit_amount = price per unit before tax.
• amount = quantity × unit_amount.

taxes[]

taxes[].name

taxes[].rate

taxes[].adds_to_final_amount

taxes[].withholding_type

Only include for withheld taxes. Use withholding. Omit entirely for transferred taxes (IVA).

category[]

category[].code — SAT product/service key (c_ClaveProdServ)

Classifies what you're selling. Affects VAT treatment and buyer's tax deductibility. Send without list field.

• Search the official SAT catalog at sat.gob.mx or ask your tax advisor.
• Common examples: 81161500 (consulting), 43211500 (computers), 50181500 (food).

category[].list = "unit" — SAT unit key (c_ClaveUnidad)

Full Example Payload

{
  "supplier_company_id": "{{company_id}}",
  "invoice_number": "123456",
  "invoice_serie": "FE",
  "invoice_type": "debit",
  "document_type": "invoice",
  "invoice_date": "2025-09-03",
  "export_reason": "01",
  "e_invoice": true,
  "currency": "MXN",
  "reason": "G03",
  "buyer": {
    "company": {
      "name": "CLIENTE EJEMPLO S.A. DE C.V.",
      "legal_name": "CLIENTE EJEMPLO S.A. DE C.V.",
      "type": "business",
      "address": { "postal_code": "06600", "country": "MX" },
      "tax_registrations": [
        {
          "type": "RFC",
          "number": "CEJ890423H71",
          "level": "country",
          "location": "MX",
          "status": "Regimen general"
        }
      ]
    }
  },
  "items": [
    {
      "name": "Servicio de consultoría",
      "quantity": 1,
      "unit_amount": 10000,
      "amount": 10000,
      "taxes": [
        {
          "name": "VAT",
          "rate": 0.16,
          "rate_type": "percentage",
          "amount": 1600,
          "adds_to_final_amount": true
          // Transferred IVA — adds to what the buyer pays
        }
      ],
      "category": [
        { "code": "81161500" },
        // SAT c_ClaveProdServ — consulting services. No "list" field.
        { "code": "E48", "list": "unit" }
        // SAT c_ClaveUnidad — service unit
      ]
    }
  ]
}

Common Mistakes