Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. David Kindness is a Certified Public Accountant (CPA) and an expert in the fields of ...

Daniel Jassy, CFA, is an Investopedia Academy instructor and the founder of SPYderCRusher Research. He contributes to Excel and Algorithmic Trading. Suzanne is a content marketer, writer, and ...

Use a solar panel cost calculator using this formula to calculate the payback period. Plenty of metrics can help you decide which solar option is best for you, but studies show most solar shoppers ...

What Is a Payback Period? The payback period is the amount of time (usually measured in years) it takes to recover an initial investment outlay—as measured in after-tax cash flows. For example, if a ...