The Paper discusses the derivation of the Ellwood formula on the basis of the Transactional Asset Pricing approach to valuation (TAPA) and proceeding from the dynamic principle of transactional equity-in-exchange.
Discussing the notion of leverage, it introduces a formulation, in capitalized value terms, and measurement, for leverage benefits to a property purchaser. It is found that such a measure for the Ellwood formula is always zero, essentially obviating any-gains-from-trade to the purchasers of property to be had on account of leveraged transactions. To address this weakness in the Ellwood formula, a modified formula is proposed, which accounts for the requirement of positivity of leverage benefits to the purchaser of property.