# Financial Toolkit : Black-Derman-Toy Model

Input
 BDT mode Fitted to initial spot rate and time dependent short rate volatilityFitted to initial spot rate and spot rate volatility
Initial zero (spot rate) curve
 Term in years 5678910 No of steps 567891020
 Year 1 2 3 4 5 Rates in %
Short rate volatility curve (not to be confused with the volatility of the initial zero rate)
 Year 1 2 3 4 Volatilities in %
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