CINCompany Structure
Corporate Identity Number
(CIN)
Definition
A unique 21-character identification number assigned to every registered company in India. Issued by the MCA at the time of incorporation. Must appear on all company letterheads, invoices, and official documents.
Why founders care
You need your CIN to open a bank account, make any ROC filings, and for many government registrations. Keep your incorporation certificate safe — the CIN is on it.
Related terms
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