Most life insurance is bought on a regular premium basis — you commit to paying a fixed amount every year (or month) for a set number of years. But a growing number of products offer a single premium option: you pay one lump sum upfront and the policy runs for its full term with no further obligations.

Single premium plans are particularly relevant for people who have come into a lump sum — an inheritance, a business sale, a large annual bonus, maturity of another investment — and want to deploy it into a guaranteed, tax-efficient, long-term vehicle.

"A single premium plan eliminates premium payment risk entirely. There's no lapse, no missed payments, no ongoing obligation. Once paid, you're covered for the full term."

The Kotak Single Invest Advantage ULIP, for example, is specifically structured for single premium investors who want market-linked growth without ongoing payment commitments. The plan includes joint life cover, loyalty additions, and fund choice flexibility.

The trade-off: committing a large lump sum to an illiquid insurance vehicle has an opportunity cost. The same money in a well-managed mutual fund might generate higher returns with more flexibility. Single premium plans make most sense when the combination of insurance cover, tax benefits, and guaranteed or market-linked returns on a specific corpus meets a specific need — not as a default for everyone with savings.

Regular premium plans suit those with steady income and no large lump sum available. They also provide the benefit of rupee cost averaging for ULIPs — buying units across different market levels over time.