Britannica AI Icon

Quick Summary

Coinsurance is a cost-sharing agreement between an insured individual and an insurance company. It typically applies after a deductible has been met. In health insurance, coinsurance means you pay a fixed percentage of the cost of medical expenses, while the insurer pays the remaining percentage. For example, with 80/20 coinsurance, you would pay 20% of the bill, and the insurer would pay 80%. This system is designed to keep costs down by aligning the policyholder's financial interests with those of the insurer.12

Summary created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

Ask Britannica AI about this topic

Britannica doesn't have a full article on this topic, so we've curated a list of our relevant coverage.