Price-Linked Subsidies and Imperfect Competition in Health Insurance

Working Paper: NBER ID: w23104

Authors: Sonia P. Jaffe; Mark Shepard

Abstract: Policymakers subsidizing health insurance often face uncertainty about future market prices. We study the implications of one policy response: linking subsidies to prices, to target a given post-subsidy premium. We show that these price-linked subsidies weaken competition, raising prices for the government and/or consumers. However, price-linking also ties subsidies to health care cost shocks, which may be desirable. Evaluating this tradeoffs empirically using a model estimated with Massachusetts insurance exchange data, we find that price-linking increases prices 1-6%, and much more in less competitive markets. For cost uncertainty reasonable in a mature market, these losses outweigh the benefits of price-linking.

Keywords: health insurance; price-linked subsidies; competition; consumer costs

JEL Codes: I11; I13; L11


Causal Claims Network Graph

Edges that are evidenced by causal inference methods are in orange, and the rest are in light blue.


Causal Claims

CauseEffect
Price-linked subsidies (P22)prices for the pivotal plans (P22)
Fewer competitors (L19)pricing distortion (L11)
Price-linked subsidies (P22)losses incurred from higher prices outweigh benefits (D61)
Price-linked subsidies (P22)distort price competition (L11)

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