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

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

export function isValidIFSC(ifsc: string): boolean {
  const ifscRegex = /^[A-Z]{4}0[A-Z0-9]{6}$/;
  return ifscRegex.test(ifsc.toUpperCase());
}