Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. MoMo Productions / Getty Images The coinsurance formula is the homeowners insurance formula ...

Coinsurance is the portion of a medical bill you pay after meeting your deductible. It’s a cost-sharing arrangement between you and your insurance company — they cover a percentage of the expense and ...

Coinsurance is a split cost between you and your insurer after meeting your deductible. Copays are fixed upfront charges that apply before meeting your deductible. Property insurance coinsurance ...