This graph shows the spectrum of the 3 spending rules. On the left is the dollar-plus-inflation rule with a 0% ceiling and floor, in the middle is the dynamic spending rule with a 5% ceiling and –1.5% floor, and on the right is the percentage-of-portfolio rule with an unlimited ceiling and floor. Underneath the spending rules are 4 lines showing the different portfolio characteristics and how each rule impacts them. The first line, market performance, shows that dollar-plus-inflation ignores market performance, dynamic spending is somewhat responsive to it, and percentage-of-portfolio is highly responsive to it. The second line, short-term spending stability, shows that short-term spending stability is stable with dollar-plus-inflation, fluctuates within limits with dynamic spending, and is variable with percentage-of-portfolio. The third line, spending flexibility, shows that spending flexibility is less flexible with dollar-plus-inflation, more flexible with dynamic spending, and highly flexible with percentage-of-portfolio. The fourth line, portfolio viability, shows that portfolio viability is unpredictable with dollar-plus-inflation, is more stable with dynamic spending, and can't be depleted with percentage-of-portfolio., Dynamic withdrawal strategy. Since many people equally prioritize spending levels and portfolio preservation, we created a retirement strategy that helps achieve both important goals—covering current spending while aiming to preserve enough money for the future.. Dynamic spending is a hybrid of the dollar-plus-inflation and percentage-of-portfolio strategies., A retirement withdrawal strategy can help you determine a safe amount of money to take out of your investment accounts each year. The strategy you choose will dictate how much income you make .