Quaker: How much does the job pay? thoraxtrainer pris The Medicare Payment and Advisory Commission (Medpac) proposed a 20 percent tax on Medigap premiums paid by seniors who buy the low-deductible supplemental plans. In the Medpac plan, that would be coupled with a simplified deductible structure and a major sweetener: a $5,000 cap on out-of-pocket catastrophic expenses. While the changes would save money for beneficiaries who become seriously ill, Medicare consumer advocates argue these changes would drive up costs for most seniors.