Taxation and accounting

PAN, TAN, TIN, GSTIN and DIN: What's the Difference?

Confused by PAN, TAN, TIN, GSTIN and DIN? A simple guide to what each number is, who needs it, and what it is used for in India.

Taxation and accounting · 4 min read · Updated 2026-04-25

Too many numbers, simply explained

Running a business in India means dealing with several identification numbers, and it is easy to mix them up. Each serves a specific purpose. Here is a plain-language guide to the main ones.

PAN — your tax identity

PAN (Permanent Account Number) is the core income tax identity for an individual or entity. It is required for tax filings, opening accounts, and most significant financial transactions. Every business and most individuals need one.

TAN — for deducting tax (TDS)

TAN (Tax Deduction and Collection Account Number) is needed by anyone who deducts TDS — for example, on salaries, rent or contractor payments. It is different from PAN and is used specifically for TDS-related filings.

TIN, GSTIN and DIN

The others each have a clear role:

  • TIN — the older tax identification number from the VAT era, now largely subsumed under GST
  • GSTIN — the GST Identification Number for a GST-registered business
  • DIN — the Director Identification Number that identifies a company director

Which ones will you need

A typical company will have a PAN, a GSTIN if registered for GST, a TAN if it deducts TDS, and DINs for its directors. Knowing which applies to you avoids confusion when filling forms and filing returns.

How Aidwish helps

Aidwish sets up the right identifiers for your business — PAN, TAN, GSTIN and director DINs — as part of your registration and compliance, so you have exactly what you need.

Note: Tax and compliance rules change through government notifications. Verify the current rules or consult a professional before acting. Aidwish can help you stay updated and compliant.

FAQ

Questions, answered

What is the difference between PAN and TAN?

PAN is your core tax identity; TAN is specifically for deducting and depositing TDS.

Is TIN still used?

TIN was the older VAT-era number and is now largely subsumed under GST.

What is a GSTIN?

The GST Identification Number issued to a GST-registered business.

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