TSP installment payment calculator


Q. To calculate the monthly installment and figure how many months before you deplete your account, what is a reasonable rate of return to insert into the calculator? Or is there a better way to figure this out?

A. You’ve pointed out the problem that makes this calculator useless at best and dangerous at worst. Competently run Monte Carlo Simulation is needed to figure this out. Without that and some corresponding account management, you should consider using your funds to buy a fixed immediate annuity to provide lifetime income.


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Mike Miles is a Certified Financial Planner licensee and principal adviser for Variplan LLC, an independent fiduciary in Vienna, Virginia. Email your financial questions to fedexperts@federaltimes.com and view his blog at money.federaltimes.com.

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