The requirements for purchasing the best 5 Lakh term insurance plan in India can differ between insurance providers. Typically, you should be a minimum of 18 years old, while the maximum age limit can range from 60 to 65, depending on the insurer. Income and education criteria may also vary among insurers. Generally, graduation is required, although some insurers may permit non-graduates to buy term insurance. Insurers may also take into account factors such as health, lifestyle, occupation, and more.