Basis Risk Demand Inelasticity
Observational StudyClinical Trial
Weather index insurance payout triggers are tied to distant weather stations rather than actual on-farm crop damage, creating basis risk where farmers suffer crop losses without receiving an insurance payout.
Picture this
Imagine buying a weather policy based on a thermometer installed at an airport 20 miles away. If a severe drought hits your specific farm but the airport station records adequate rainfall, you receive zero compensation despite losing your entire harvest. This mismatch between actual farm loss and index payout reduces farmers' willingness to pay for insurance unless the contract is heavily subsidized.
What the evidence says
Unsubsidized insurance take-up is low (below 15%), but demand increases significantly to 60.2% when price subsidies reach 75%, demonstrating that spatial basis risk severely dampens demand at actuarially fair prices.
- Who was studied
- N = 5,263 rural households across 42 villages in three Indian states evaluated across varying distance radii from reference weather stations.
- How
- Econometric estimation of insurance demand elasticities across price discount tiers (10%, 50%, 75% subsidies) and spatial distance to reference weather stations.
What to do
Deploy localized micro-weather sensor networks or satellite-derived precipitation indexes to minimize spatial basis risk and increase voluntary insurance adoption.
From the source
"High basis risk significantly suppresses voluntary take-up of index insurance contracts at market prices, necessitating price subsidies or higher gauge density to achieve widespread coverage."
300_400 Wages General Equilibrium NBER Jan2014.pdf