 A rebate cannot contribute to "profit" ("profit" is in quotes because most Medicare Advantage and other Part C health plans are sponsored by non-profit organizations, primarily integrated health delivery systems).This benchmark/bidding/rebate process accounts for from 97% to 100% of the cost of the given Medicare Advantage plan to the Medicare Trust Funds.The individual fee for each Part C beneficiary is also uplifted or downsized slightly (approximately 1%-3% in either direction on average) from the county-specific fee based on a risk-based formula tied to the personal health characteristics of the capitated individual.