What is DIN?

Also called: Director Identification Number

A DIN is the eight-digit number the Ministry of Corporate Affairs allots to an individual so they can be appointed a director of a company, and it is held for life.

One person holds one DIN however many boards they sit on. It is obtained through form DIR-3 or, for a first-time director of a new company, as part of the SPICe+ incorporation form.

It must be revalidated every year through DIR-3 KYC, filed by 30 September. Missing that deactivates the DIN and attracts a ₹5,000 fee to restore it.

Why it matters

A deactivated DIN means the director cannot sign any filing, which can freeze a company's entire compliance calendar until it is reinstated.

The statutory position

Each figure with the provision it comes from, so it can be checked.
What	Position	Source
Requirement	No individual may be appointed a director without a DIN	Section 153, Companies Act 2013
Application	Through SPICe+ for a first-time director, or DIR-3 otherwise	Rule 9, Companies (Appointment and Qualification of Directors) Rules 2014
Annual KYC	DIR-3 KYC by 30 September each year	Rule 12A of the same Rules
Fee to reactivate a deactivated DIN	₹5,000	Rule 11(3), Companies (Registration Offices and Fees) Rules 2014
Uniqueness	One DIN per person for life, across every company	Section 155, Companies Act 2013

Not to be confused with

These get used interchangeably, including by tools that should know better. They are different things.

DSC

A DIN identifies you as a director. A DSC is the cryptographic certificate you sign filings with. You need both, they expire differently, and a valid DIN with a lapsed DSC blocks every filing.

DPIN

DPIN was the equivalent for LLP designated partners. The two systems were merged — a DIN now serves both purposes.

Questions people ask

Can I hold two DINs?

No. Section 155 prohibits it, and where a duplicate has been allotted the later one must be surrendered in Form DIR-5. Holding two attracts a penalty and complicates every filing that quotes one.

What happens if I miss DIR-3 KYC?

The DIN is deactivated, and every filing requiring that director's signature is blocked until it is reactivated on payment of ₹5,000. For a sole additional director, this can stop the company filing anything at all.

What usually goes wrong

Missing the 30 September KYC, which deactivates the DIN silently
Applying afresh instead of using the existing DIN when joining another company
Letting the email or mobile on the DIN go stale, so KYC verification fails
Resigning as a director without filing DIR-11, which leaves the record showing you still in office