The all-in interest rate (effective) represents the total cost of debt in property development finance. Unlike the nominal interest rate, it includes the base lending rate, the lender’s margin, arrangement fees, exit fees, and any compounding effects. This rate gives UK property developers and finance professionals a realistic measure of how much debt funding truly costs over the life of a development project. Lenders and investors use the all-in effective rate when comparing financing structures across the capital stack, ensuring transparent evaluation of debt obligations within property development finance UK.
This sits beneath Debt Cost Metrics, introducing a more specific variant of the measure without changing its core interpretation. It is commonly considered alongside Effective Interest Rate, as both are closely related measures used to assess similar aspects of performance or risk.
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