How can I do Inter caste marriage?

Inter-caste marriages are allowed under the Hindu Marriage Act, 1955, as long as both individuals are Hindus, which includes Buddhists, Jains, and Sikhs. The Act permits marriage regardless of caste, provided the groom is at least 21 years old, the bride is at least 18, both parties give free consent, and they are not related within the prohibited degrees of relationship unless allowed by custom. The marriage can be solemnized according to customary rites and ceremonies, and it can be legally registered to obtain a marriage certificate.