MDIB - What does MDIB stand for? The Free Dictionary
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table assumes use of the account owner's and beneficiary's joint life expectancies, when the beneficiary is 10 years younger than the account owner.
13) An exception to this rule applies if the withdrawals were earlier calculated using the MDIB
table (referred to above), in which case the withdrawals of the remaining assets in the IRA may now be made over the actual life expectancy of the non-spouse beneficiary.
rules allow the use of a combined life expectancy of no more than 10 years greater than the participant's single life expectancy.
Since his sister is more than 10 years younger than he, H must use the smallest factor from the MDIB
or life expectancy table to find the divisor for the required minimum distribution.