Rate of return represents the percentage net gain or loss of an investment's initial cost over a period of time. The rate of return calculates the percentage change from the beginning to the end of a ...

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Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. A finance charge includes interest rates, origination fees, service fees, and late fees.

When you own a business, you need to understand how much money you make compared to how much you spend. That means you need to grasp profit margins. But while it’s crucial to know how to calculate ...