About TAN Tax Deduction Account Number or Tax Collection Account Number is a 10 -digit alpha-numeric number issued by the Income-tax Department. TAN is to be obtained by all persons who are responsible for deducting tax at source (TDS) or who are required to collect tax at source (TCS). How to apply for TAN? There are two modes for applying for ... What is TAN ? TAN is Tax Deduction and Collection Account Number . It is a 10 digit alphanumeric number . This number has to be attained by people who are accountable for deducting tax at source or collecting tax at source. It is compulsory to quote your TAN in TDS or TCS return, payment, certificates, Annual Information Return and other documents. Every person whose taxes are deducted at the source or those who collect tax at the source is required to obtain TAN . If a person fails to apply for ... Find your TAN or company name with Income Tax Department using this online service. You can select the category of deductor, state, company name or TAN and get details such as PAN, status, etc. What Is TAN number ? TAN number refers to Tax Deduction and Collection Account Number which is issued by the Income Tax Department.