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fix(isTaxID): add formatted CPF support and additional test cases for pt-BR locale #2675

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Merged
rubiin merged 4 commits into from
Mar 4, 2026
Merged

fix(isTaxID): add formatted CPF support and additional test cases for pt-BR locale #2675

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d109441
feat: add support for alphanumeric CNPJ format (effective July 2026)
easedu Dec 21, 2025
d37bc8c
feat(isTaxID): add Brazilian CPF validation for pt-BR locale
easedu Mar 3, 2026
03500c0
Merge branch 'master' into feat/cpf-validation
easedu Mar 3, 2026
0f6ea41
docs: update ptBrCheck comment to reflect CPF formatting removal
easedu Mar 3, 2026
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19 changes: 12 additions & 7 deletions src/lib/isTaxID.js
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Original file line number Diff line number Diff line change
Expand Up @@ -907,12 +907,14 @@ function plPlCheck(tin) {
}

/*
* pt-BR validation function
* (Cadastro de Pessoas Físicas (CPF, persons)
* Cadastro Nacional de Pessoas Jurídicas (CNPJ, entities)
* Both inputs will be validated.
* CNPJ supports both numeric (legacy) and alphanumeric format (starting July 2026).
*/
* pt-BR validation function
* (Cadastro de Pessoas Físicas (CPF, persons)
* Cadastro Nacional de Pessoas Jurídicas (CNPJ, entities)
* Both inputs will be validated.
* CPF accepts formatted (XXX.XXX.XXX-XX) and unformatted input;
* formatting is stripped before validation.
* CNPJ supports both numeric (legacy) and alphanumeric format (starting July 2026).
*/

/**
* Convert a CNPJ character to its numeric value for check digit calculation.
Expand Down Expand Up @@ -966,6 +968,9 @@ function validateCnpj(cnpj) {
}

function ptBrCheck(tin) {
// Strip CPF formatting (XXX.XXX.XXX-XX)
tin = tin.replace(/[.\-/]/g, '');

if (tin.length === 11) {
let sum;
let remainder;
Expand Down Expand Up @@ -1205,7 +1210,7 @@ const taxIdFormat = {
'mt-MT': /^\d{3,7}[APMGLHBZ]$|^([1-8])\1\d{7}$/i,
'nl-NL': /^\d{9}$/,
'pl-PL': /^\d{10,11}$/,
'pt-BR': /(?:^\d{11}$)|(?:^[A-Z0-9]{12}\d{2}$)/i,
'pt-BR': /(?:^\d{3}\.\d{3}\.\d{3}-\d{2}$)|(?:^\d{11}$)|(?:^[A-Z0-9]{12}\d{2}$)/i,
'pt-PT': /^\d{9}$/,
'ro-RO': /^\d{13}$/,
'sk-SK': /^\d{6}\/{0,1}\d{3,4}$/,
Expand Down
13 changes: 13 additions & 0 deletions test/validators.test.js
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Expand Up @@ -13957,6 +13957,13 @@ describe('Validators', () => {
// CPF (persons)
'35161990910',
'74407265027',
'12345678909',
'11144477735',
'52998224725',
// CPF formatted (XXX.XXX.XXX-XX)
'123.456.789-09',
'111.444.777-35',
'529.982.247-25',
// CNPJ numeric (legacy format)
'05423994000172',
'11867044000130',
Expand All @@ -13967,6 +13974,12 @@ describe('Validators', () => {
invalid: [
'ABCDEFGH',
'170.691.440-72',
'000.000.000-00',
'111.111.111-11',
'123.456.789-00',
'12345678900',
'123',
'123456789012',
'11494282142',
'74405265037',
'11111111111',
Expand Down
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