This is one of those insurance questions that feels complicated but has a pretty clear answer once you look at the numbers. Almost every life insurer in India offers both monthly and annual (and sometimes quarterly or half-yearly) premium payment options. The choice affects more than just your cash flow.
When you pay monthly, insurers typically add a loading — the total annual cost through monthly instalments is higher than the quoted annual premium. The loading varies but is commonly 4–8% more per year. On an ₹18,000 annual premium, that's ₹720–₹1,440 extra every year, purely because of the payment frequency.
The argument for monthly payment is cash flow management — paying ₹1,500 a month is more manageable than ₹18,000 in one go for many households. That's a legitimate reason, and not everyone can comfortably absorb an annual outflow.
But if you can manage the annual payment — even by setting aside ₹1,500 per month in a liquid fund for 12 months and then paying in one shot — you'll save the loading charge every single year. Over a long policy, it adds up to a meaningful amount.
The practical recommendation: pay annually if you can afford to. Set a calendar reminder well before the due date. If cash flow genuinely doesn't allow it, monthly is fine — the insurance is still worth having at any payment frequency.