Cost sharing

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In health care, cost sharing occurs when patients pay for a portion of health care costs not covered by health insurance.[1][2] The "out-of-pocket" payment varies among healthcare plans and depends on whether or not the patient chooses to use a healthcare provider who is contracted with the healthcare plan's network. Examples of out-of-pocket payments involved in cost sharing include copays, deductibles, and coinsurance.

In accounting, cost sharing or matching means that portion of project or program costs not borne by the funding agency. It includes all contributions, including cash and in-kind, that a recipient makes to an award. If the award is federal, only acceptable non-federal costs qualify as cost sharing and must conform to other necessary and reasonable provisions to accomplish the program objectives. Cost sharing effort is included in the calculation of total committed effort. Effort is defined as the portion of time spent on a particular activity expressed as a percentage of the individual's total activity for the institution.[3] Cost sharing can be audited and must be allowable under cost principles and verifiable to records.

A cost-sharing mechanism is a truthful mechanism for deciding what agents should be served by a public project, and how much each of them should pay.



  1. ^ Braithwaite RS, Omokaro C, Justice AC, Nucifora K, Roberts MS (February 2010). "Can broader diffusion of value-based insurance design increase benefits from US health care without increasing costs? Evidence from a computer simulation model". PLoS Med. 7 (2): e1000234. doi:10.1371/journal.pmed.1000234. PMC 2821897. PMID 20169114.
  2. ^ "Cost Sharing".
  3. ^ "What is Cost Sharing". UC Davis Accounting and Financial Services. October 2018.