Joint life expectancy values?

Posted by AES on August 6, 2009, 2:25 pm

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I found on the web a table of the divisors used to calculate the
required minimum distributions from IRAs for ages between 70 and 80 in
what I assume to be the single life expectancy case; and a quick
calculation using the Mathematica Fit[] function found that these
divisors at age n were very well fitted by the emperical formula
d[n] = 110.0 - 1.491 n + 0.004196 n^2 .

Can anyone point me to a similar table (or approximate formula) for the
joint life expectancy divisors to use for spouses of substantially
different ages (65 and 77 in the present case)?

And if each spouse has a separate IRA account (because they were
separately employed by the same employer), how does that work out?

(This is in a community property state; both IRAs are viewed as
community property; and they file jointly.)

(And by the way, the approximate formula given above extrapolates to a
divisor of 1 at age 102.9; I wonder what the actual values are?)

========================================= MODERATOR'S COMMENT:
Are you looking for Table II of
http://www.irs.gov/pub/irs-pdf/p590.pdf

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Posted by Stuart A. Bronstein on August 6, 2009, 6:34 pm

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> I found on the web a table of the divisors used to calculate the

> required minimum distributions from IRAs for ages between 70 and

> 80 in what I assume to be the single life expectancy case; and a

> quick calculation using the Mathematica Fit[] function found

> that these divisors at age n were very well fitted by the

> emperical formula d[n] = 110.0 - 1.491 n + 0.004196 n^2 .

This isn't exactly the same, but the IRS has dual life actuarial
tables. You can find them in Publication 1457:
http://www.irs.gov/pub/irs-pdf/p1457_99.pdf

Stu

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Posted by AES on August 7, 2009, 5:08 pm

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> This isn't exactly the same, but the IRS has dual life actuarial

> tables. You can find them in Publication 1457:

> http://www.irs.gov/pub/irs-pdf/p1457_99.pdf

Thanks,

(Except, that's 868 pages of densely packed tables!!)

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<< ------------------------------------------------------- >>
<< The foregoing was not intended or written to be used, >>
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<< that may be imposed upon the taxpayer. >>
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<< to this newsgroup as well as our anti-spamming policy >>
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