The length of validity of a business visa for India can vary depending on a number of factors, including the applicant's nationality, the type of visa and specific conditions. As a general rule, traditional business visas can be valid from a few months to several years, allowing extended stays in India. On the other hand, e-business visas have a more limited validity, generally from 60 days to 1 year. It is important to check the validity dates indicated on your visa to avoid any problems during your trip.