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El método que propones no es el más eficiente. En el paper que comentaba anteriormente se analizan los siguientes métodos que a mi modo de entender son muy básicos y el de porcentaje constante tiene sus pegas.
1. Constant Dollar Amount: Based on Initial Balance (“Constant Dollar”)
Withdrawal Amount: a fixed amount, increased annually by inflation, based on the initial balance at
retirement
2. Constant Percentage: (“Endowment Approach”)
Withdrawal Amount: fixed percentage of portfolio value
3. Changing Percentage Probability of Failure Fixed Retirement Period (“Constant Failure Percentage”)
Withdrawal Amount: based on maintaining a constant probability of failure over the expected fixed
retirement period
4. Changing Percentage: 1/Life Expectancy Withdrawal Approach (“RMD Method”)
Period Determination: updating based on survivorship experience
Withdrawal Amount: 1 divided by the remaining retirement duration (life expectancy)
5. Changing Percentage: Probability of Failure Mortality Updating (“Mortality Updating Failure
Percentage”)
Period Determination: updating based on survivorship experience
Withdrawal Amount: based on maintaining a constant probability of failure over the estimated
remaining retirement duration
Ver archivo adjunto 2064577
El paper es de Morningstar (pensé que era de Vanguard) y se titula “Optimal Withdrawal Strategy for Retirement Income Portfolios”. Desafortunadamente no tengo su enlace.
Al final va ser mejor tenerlo todo en 10 bancos y pedir la paguita de 52...