This article looks at how clients can adjust spending patterns to stay financially afloat despite fluctuations in the value of their retirement portfolios. The writer observes that the models for these calculations have been refined and discusses a few of the approaches, including using "decision rules"; the age-based, three-dimensional distribution model; and the mortality-updating constant probability of failure approach. The writer argues that these approaches are more efficient than a constant inflation-adjusted amount strategy, but he also discusses their drawbacks.

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