Perpetuities pay a fixed annual sum; interest rate calculated by dividing payment by price. Example: $5,000 annual perpetuity for $60,000 has an 8.33% interest rate. Validate investment value using ...

The private-equity industry is casting itself as a savior for the American nest-egg. It can be really hard to figure out if they're right.

The calculator on your Apple devices can do more than add, subtract, multiply and divide. Here's how it can help you with all kinds of math problems. Trump's Reaction to Melissa Hortman Flag Question ...

How to use the iPhone scientific calculator, Math Notes for easier problem solving The calculator on your Apple devices can do more than add, subtract, multiply and divide. Here's how it can help you ...

Daniel Jassy, CFA, is an Investopedia Academy instructor and the founder of SPYderCRusher Research. He contributes to Excel and Algorithmic Trading. Return on investment (ROI) measures the amount of ...

David Lavie is a writer and editor with two decades' experience in marketing communications, equity research and publishing. He is a founding partner in Quartet Communications, where, as Head of ...

Principal is the amount you borrowed, and interest is the amount you pay to the lender as a charge for borrowing. To calculate interest, multiply the principal amount by the interest rate, then ...

IRR or the Internal Rate of Return calculates a series of cash flows. This is assuming there are equal-sized periods of payment. Today we'll look at how to calculate IRR and how to interpret the ...

Two diverging paths of potential investments often pose a challenge: Which one to take for maximizing returns or minimizing risks? The crossover rate, a key metric in comparing the value of investment ...