Insights

At RealData, we’ve seen an uptick in interest about expense reimbursements, aka pass-throughs or recoverable expenses. If you’re in commercial real estate—whether as an investor, broker, property manager, or tenant rep—then you know that such reimbursements can make or break a deal. That’s why I’m giving away a FREE eBook: “Understanding Real Estate Expense Reimbursements.”

Internal Rate of Return (IRR) is the metric of choice for many, if not most, real estate investors. But there are a few issues with IRR that can cause you some vexation: If you expect a negative cash flow at some point in the future, then the IRR computation may simply fail to come up with a unique result; and with your positive cash flows, IRR may be a bit too optimistic about the rate at which you can reinvest them.

For these reasons, a variation on IRR, called Modified Internal Rate of Return (MIRR), can be a useful tool. Let’s see how it works, and see how it gives you the opportunity to deal with IRR’s shortcomings.

Internal Rate of Return (IRR) is arguably the most widely used metric in commercial real estate, and for good reason. It’s often called the gold standard for evaluating long-term investment performance. In this post, I’ll unpack what IRR really means, how to calculate it, where it excels, and where it doesn’t.