Brazil document validators: CPF, CNPJ
CPF (Brazilian individual taxpayer ID)
11 digits formatted 000.000.000-00: 9 base digits and 2 check digits.
Brazilian e-commerce checkout, NF-e invoices, fintech KYC, Pix.
CNPJ (Brazilian company tax ID)
14 positions 00.000.000/0001-00: 8-digit root, 4-digit branch (0001 = HQ) and 2 check digits. Alphanumeric CNPJ is accepted from 2026.
B2B supplier onboarding, invoicing, Brazilian ERP integrations.