How does parametric heat or rainfall insurance work for Indian MSMEs and workers?
Parametric insurance pays a fixed amount when a measured index, such as temperature or rainfall at a named weather station, crosses a set trigger, without a loss survey. Payouts can come within days. The catch is basis risk: you can suffer a loss without the index triggering, or be paid without a loss.
How a parametric cover is built
- Index: the measured variable, such as daily maximum temperature, rainfall over 24 hours or a flood depth, from a named source such as IMD stations or satellite data.
- Trigger: the level and duration that starts a payout, for example 43 C or more on three days in a row.
- Payout: a fixed sum per trigger event, often stepped up for more severe readings, with an annual cap.
- Policyholder: often a group, such as a cooperative, a state government or a lender's borrower pool, rather than one small firm.
Where it has been used in India
- Crop insurance: the government's Restructured Weather Based Crop Insurance Scheme pays farmers on weather indices rather than assessed crop loss.
- Heat: SEWA, with Climate Resilience for All and Blue Marble, launched a heat cover for women informal workers in Gujarat in May 2023, designed to pay when temperatures stayed above a set threshold for several days.
- Disasters: Nagaland signed a state-wide parametric disaster cover with SBI General Insurance in August 2024, reported as the first by an Indian state, with the state paying the premium.
What an MSME should check before buying
- Which station or data source is used, and how far it is from your site. Distance is the main source of basis risk.
- Whether the trigger matches when your work actually stops, for example the temperature at which you cut shifts.
- The payout per event and the annual cap, against your lost wages or output per day.
- That the insurer is a general insurer registered with IRDAI, and how quickly it pays after a trigger.
How lenders and buyers use it
A lender can bundle a parametric cover with working capital loans in a flood or heat zone so a bad week does not become a default. A buyer can fund cover for workers in its supply chain. In both cases the payout supports cash flow; it does not replace cooling, drainage or other measures that reduce the loss itself.
Illustrative structure for a 40-worker unit
- Trigger: daily maximum of 43 C or more for three consecutive days at the nearest IMD station
- Payout: three days' wage per worker per event, 3 x Rs 500 = Rs 1,500
- Per event: 40 workers x Rs 1,500 = Rs 60,000
- Annual cap of two events: 2 x Rs 60,000 = Rs 1,20,000
This is a made-up structure to show how the terms fit together, not a real product or price.
What Senseible does here
Senseible's climate risk work frames the physical heat and flood risk at a site, which is the starting point for deciding whether a parametric cover is worth buying. The cover itself is priced and sold by an IRDAI-registered insurer.
Last reviewed 2026-10-17. Products, triggers and payouts change each season; check the insurer's current policy wording before buying.