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 for small businesses helps cover property and business assets, so the insurer knows there's adequate coverage. Here's how it works.

Medicare has different out-of-pocket costs, including premiums, deductibles, copayments, and coinsurance. Copayments are fixed dollar amounts, and coinsurance is a percentage of the cost. You may ...