Real Internal Rate of Return (Real IRR) is a key performance metric in property development finance UK that calculates the annualised return on equity after removing the effects of inflation. Unlike nominal IRR, it provides a true measure of the purchasing power growth of invested capital over the life of a development project. Real IRR is widely used by UK property developers and finance professionals to compare the profitability of projects, assess risk-adjusted returns, and guide investment decisions, especially when evaluating long-term development schemes or complex capital stacks. It is essential for accurate project valuation.
This sits beneath Equity-Based Returns, introducing a more specific variant of the measure without changing its core interpretation. It is commonly considered alongside Modified IRR (MIRR), as both are closely related measures used to assess similar aspects of performance or risk.
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