Previous versions of this working paper were originally published in December 2019 and August 2021.

We examine the effects of both gaining and losing eligibility by exploiting the mandate’s implementation in 2010 and its automatic disenrollment mechanism at age 26. Our estimates show that increasing access to health insurance lowers young adults’ out-of-pocket medical expenditures and debt in third-party collections. However, the reductions in financial distress are transitory, as they diminish after an individual loses access to parental insurance when they age out of the mandate at age 26.

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