Marginal Internal Rate of Return (MIRR): Because the internal rate of return model assumes all cash flows (positive ones) are reinvested at the same rate of return throughout the life of the project, the marginal IRR model has evolved. Not only does it accommodate irregular positive cash inflows, but it also handles negative, or outflows of cash. Most financial analysts feel using the MIRR as the main yardstick to measure a project's success is more "real world".










