In India, a Tax Deduction and Collection Account Number (TAN) is a 10 digit number issued to persons who are required to deduct or collect tax on payments made by them under the Indian Income Tax Act, 1961.  It is compulsory to quote TAN of the assessee in TDS/ TCS statements and challan for payment of TDS/ TCS. The Tax Deducted at Source on payments made by assessees is deposited under the TAN to enable the assessees who have received the payments to claim the tax deducted in their income tax return