We've made a new calculator available on our web site, www.zunna.com. The calculator finds the maximum sustainable withdrawal rate from a portfolio. Inputs are investment horizon (in years), account ending value goal (Don't Go Broke, Retain Principal, Retain Buying Power) and historical success rate. Outputs include the optimized asset allocation, the sustainable withdrawal rate and the initial account value needed to meet the ending value goal. The utility was built using a new method of optimization known as simulated annealing, as exists in the Black Box program, the optimizer in the Advisor Edition of WATS.
Keith Marbach
Keith Marbach