TAN stands for Tax Deduction and Collection Account Number that contains a 10-digit alphanumeric number issued by the Income Tax Department to persons responsible for deducting or collecting tax at source.
Applicable For
- Company
- Partnership Firm, AOP and BOI
- Individual and HUF having business turnover up to Rs.1 crore or profession up to Rs. 50 lakh
Note: As per section 272BB, failure to apply for TAN or not quoting the TAN in the specified documents attracts a penalty of Rs. 10,000.

TAN Structure
First four characters are letter.
Next five are numerals and the last character is letter.
For Example - AAAA12345A
Here,
- First 3 alphabets represents the jurisdiction code i.e. State code where the TAN holder operates.
- Fourth alphabet is first letter of the TAN holder's name which can be a company, firm or individuals.
Why is TAN Allotment Date?
The TAN allotment date is the date on which the TAN is allotted by the Income Tax Department.
How to Find TAN Allotment Date?
1. Check the TAN Allotment Letter
The most easiest method is to check the original TAN allotment letter issued after the TAN application was processed.
If the document is available in your company's tax records, previous correspondence or email records, check it first.
2. Use the 'Know Your TAN' Facility
If the allotment letter is unavailable, then go to income tax e-filing portal click on the option "Know Your TAN" under Quick Links.
The Know Your TAN facility help users to search for TAN details using information such as the deductor's name, category and state.
3. Check Your TAN Application Acknowledgement
When applying for TAN, an acknowledgement is generated containing an acknowledgement number and application-related details.
If you have preserved the old TAN application acknowledgement, it can be an important point for tracing the application and allotment details.
For more details, click here: TAN Allotment Date