A useful design identifies whether the scheme intended to overcome financing constraints, attract a new production stage, improve scale, or accelerate investment. Each mechanism implies a different observation. Additional equipment, entry into a new product, supplier qualification, productivity, and sustained exports can provide evidence, but none should be treated as interchangeable.
Comparison firms should face similar product demand and initial conditions. Participants selected for strong growth prospects cannot simply be compared with all nonparticipants. A credible study also examines pre-policy trends, entry and exit, related entities, and whether output persists after support ends.
The fiscal cost should include actual payments and relevant administrative or complementary support, with a clearly stated perimeter. Dividing supported sales by payments produces a leverage ratio for transactions. It does not estimate a multiplier or the welfare return without the counterfactual and domestic-income calculation.
India's production-linked design provides an observable incentive base. Its economic contribution should be assessed through additional production, resident value added, capabilities, and durability. Keeping those outcomes separate from the payment formula permits a more credible judgment about where the programs change investment behavior and where they mainly subsidize activity already likely to occur.