Excel can find the internal rate of return (IRR) and use that as the discount rate for an NPV of zero. Let’s begin by examining each step of NPV in order. The formula is: NPV = ∑ {After-Tax ...

To back into the IRR, a financial calculator, Excel, or portfolio accounting system ... with the ultimate goal of identifying the rate of discount. The formula for IRR can’t be easily calculated ...

Linda Grayson has 20+ years of experience in proprietary trading and index futures. She began writing for Investopedia in 2018. David Kindness is a Certified Public Accountant (CPA) and an expert ...