PAN is the identity the income-tax system uses for every return, deduction, and refund. TAN is required before an office can deduct tax at source and file e-TDS. Both are applied for on the prescribed portal with the supporting identity and address proofs.
We prepare the application, file it, and track allotment so invoicing, bank KYC, and the first TDS month are not waiting on a number that should have been applied for at incorporation.