A top-up cover is also known as a high deductible policy. Most people in the international markets buy top-up covers in addition to high co-pay policies or uncovered diseases or treatment. However in India, the key reason for introduction of top-up cover initially seems to be lack of high sum insured products, though the same is no longer the case. The maximum amount of cover under a health policy remained at Rs 5,00,000 for a very long time. Anyone wanting a higher cover was forced to buy two policies paying double the premium. This led to the development of the Top-Up policies by insurers, which offers cover for high sums insured over and above a specified amount (called threshold). This policy works along with a basic health cover having a low sum insured and comes at a comparatively reasonable premium. For example, Individuals covered by their employers can also opt for a top-up cover for additional protection (keeping the sum insured of the first policy as the threshold). This can be for self and family, which comes in handy in the unfortunate event of high cost treatment