In India, there are several accepted forms of proof of age. These include birth certificates, school leaving certificates, passports, voter ID cards, PAN cards, and other government-issued IDs. Additionally, some financial institutions also accept driving licenses and Aadhaar cards as proof of age. To determine the age of a minor, guardians can provide a court-certified guardianship certificate or a notarized affidavit. Ultimately, the type of age proof accepted by a particular institution will depend on its requirements.