What would happen if HSAs were applied to Medicare?

Considerable cost savings:

To examine consequences of beneficiaries making their own rationing decisions, my colleague Andrew Rettenmaier and I estimated the effects of creating reformed Medicare based on a $5,000-deductible Health Savings Account (HSA), beginning with the baby boomer retirees. The size of the deductible and the HSA would grow through time (as health costs grow), and since deposits would be made with after-tax dollars, withdrawals for any purpose would be tax free. In this way, beneficiaries would be encouraged to make their own tradeoffs between health care and every other good or service. We estimate the effects would result in a reduction in Medicare’s unfunded liability by between 25% and 40%.