indian-financial-utils/src/validators/pan.ts

Validate PAN, Aadhaar, GSTIN, IFSC, PIN codes and mobile numbers — essential financial identifiers in India.

export function isValidPAN(pan: string): boolean {
  const panRegex = /^[A-Z]{5}[0-9]{4}[A-Z]{1}$/;
  return panRegex.test(pan.toUpperCase());
}