A TAN number is the 10-character Tax Deduction and Collection Account Number that India’s Income Tax Department issues to any person or entity responsible for deducting or collecting tax at source. If you pay salaries, rent, contractor fees, professional charges, or any other payment where tax must be withheld before the money reaches the recipient, you need this number before you make that first deduction. It is the identifier the government uses to match every TDS or TCS deposit back to you, and without it, your returns and challans will not process.
The requirement comes from Section 203A of the Income Tax Act, 1961. You apply using Form 49B, pay ₹77, and typically receive your TAN within 7 to 10 working days.
What a TAN Looks Like
Every TAN follows the same fixed pattern: four letters, five digits, one final letter. An example is BLRS12345E. Each piece carries meaning.
- The first three letters identify the city or state where the TAN was issued. BLR indicates Bangalore, DEL indicates Delhi, and so on.
- The fourth letter is the first initial of the TAN holder’s name.
- The five digits in the middle are system-generated.
- The last letter is a system-generated check character.
If a number doesn’t match this structure, the Income Tax Department’s systems will reject it as invalid.
Who Must Get a TAN
The obligation applies broadly across entity types: individuals, Hindu Undivided Families, companies, partnership firms, associations of persons, local authorities, and government agencies. What matters is not what kind of entity you are, but whether you are legally required to withhold or collect tax from someone else.
In practice, the common triggers are:
- Employers deducting tax from employee salaries.
- Businesses paying contractors, commissions, or professional fees above the thresholds in the Income Tax Act.
- Businesses paying rent above the prescribed limit.
- Sellers collecting TCS on goods such as timber, scrap, or minerals.
- Individuals buying immovable property above ₹50 lakh.
The Act does not set a specific deadline for applying. The obligation is simply that you must have the TAN before you make your first deduction or collection, because you cannot deposit withheld tax or file a TDS return without one. The central system will reject any return where the TAN does not appear in the master database.
TAN vs PAN
Both are 10-character alphanumeric codes issued by the Income Tax Department, which is why people confuse them. They do different jobs.
Your PAN (Permanent Account Number) identifies you as a taxpayer across all your own financial transactions and tax filings. Your TAN identifies you specifically as someone who deducts or collects tax on behalf of the government from other people. Every taxpayer needs a PAN. Only those who withhold or collect tax need a TAN.
The practical difference shows up at filing time. You use your PAN when filing your own income tax return. You use your TAN when filing TDS or TCS returns and when issuing withholding certificates to the people you have deducted tax from.
How to Apply for a TAN
The application form is Form 49B. You can file it online through the Protean eGov Technologies portal (formerly NSDL) or on paper at a TIN Facilitation Centre.
Online
Go to the Protean portal and select the online TAN application (Form 49B). The form asks for your deductor or collector category, full name, address, and contact details. Fill it in English using capital letters and don’t leave fields blank. After you submit and pay the fee online, the system generates a 14-digit acknowledgment number for tracking your application.1Protean eGov Technologies Limited. Online Application for TAN (Form 49B)
Offline
Download Form 49B from the Protean site or collect one at a TIN Facilitation Centre. Fill it out the same way, then submit it with the fee at your nearest centre. Keep the acknowledgment receipt for tracking.
Fee and Timing
The processing fee is ₹77 (₹65 plus 18% GST).1Protean eGov Technologies Limited. Online Application for TAN (Form 49B) If everything checks out, the Income Tax Department allots your TAN and sends it to your address or email. Normal processing takes 7 to 10 working days.
Where You Must Quote Your TAN
Once allotted, the TAN has to appear on nearly every document connected to your tax deduction or collection activity:
- Every challan used to deposit TDS or TCS with the government.
- Form 16 (salary withholding certificates) and Form 16A (non-salary withholding certificates) issued to deductees.
- All quarterly TDS and TCS returns.
- Any correspondence with the Income Tax Department about TDS or TCS matters.
This is the identifier that links your deposits to your account in the central system. If the TAN is missing or wrong, the return is rejected and the people you deducted tax from won’t see the credit reflected in their records.
Penalties for Not Having a TAN or Using a Wrong One
Section 272BB of the Income Tax Act sets a flat penalty of ₹10,000 for two failures: not obtaining a TAN when you were required to, and quoting a false TAN on challans, certificates, statements, or other documents.2Indian Kanoon. Section 272BB in The Income Tax Act, 1961 The false-TAN penalty applies when the person knows the number is false, believes it to be false, or has no reason to believe it is true.
You can contest the penalty. The Assessing Officer must give you an opportunity to be heard before imposing it, and if you can show reasonable cause for the failure, the penalty may not apply. The burden of proving that cause is on you.
The practical fallout is often worse than the ₹10,000 itself. A rejected TDS return means your deductees do not get credit for the tax you withheld, which creates problems for them and corrections work for you.
Fixing Mistakes and Duplicate TANs
If your name, address, or other details change or were entered wrong at application, you can submit a correction request through the Protean portal under “Change/Correction in TAN.” Enter your existing 10-digit TAN, select your deductor category, and provide the corrected details. Name changes need self-attested copies of your PAN card, identification proof, or business registration documents. Address changes need official address proof such as a utility bill or rental agreement.
Holding more than one TAN for the same entity is not allowed. When deposits get split across multiple numbers, the credits do not consolidate, and deductees lose out. The one exception is where different branches or divisions of the same organization legitimately hold separate TANs for operational reasons.
If you discover you have duplicate TANs, you need to surrender the extras. Download Form 49B, indicate which TAN you want cancelled and why, and submit it with your TAN allotment letters to the nearest TIN Facilitation Centre or the Income Tax Department. Continuing to use a duplicate exposes you to the ₹10,000 penalty and keeps your records out of sync.
One Upcoming Change for Property Buyers
The Union Budget 2026 introduced one narrow relief. Starting October 1, 2026, resident individuals and Hindu Undivided Families buying immovable property from non-resident sellers will no longer need a TAN to deduct tax on that transaction. They can quote their PAN on the deposit challan instead. This change applies only to that specific situation. Everyone else who deducts or collects tax at source still needs a TAN as before.