Much progress has been achieved in the valuation of call options and interest-rate caps on default-free mortgages. The evidence suggests that the observed term structure of interest rates (the full structure, not just the end points) and a reasonable estimate of the volatility of spot rates is...

The paper begins with presentation of a methodology for computing rental costs of capital under any tax regime.Tax law over the 1980-84 period is specified and the provisions of theTreasury and Administration tax reform proposals and HR 3838 are described. A model is then constructed to allow...