When calculating your Series of Substantially Equal Periodic Payments (SOSEPP), provided for under §72(t)(2)(A)(iv) of the Internal Revenue Code, one of your choices is the Fixed Amortization method.
Calculating your annual payment under this method requires you to have the balance of your IRA account, from which you then create an amortization schedule over a specified number of years equal to your life expectancy factor from either the Single Life Expectancy table, the Uniform Lifetime table, or the Joint Life and Last Survivor Expectancy table, using the age(s) you have reached (or will reach) for that year, coupled with a rate of interest of your choice that is not more than 120% of the federal mid-term rate published by regularly the IRS in an Internal Revenue Bulletin (IRB).
Once you’ve calculated your annual payment under the Fixed Amortization method, your future payments will be exactly the same until the SOSEPP is no longer in effect. There is a one-time opportunity to change to the Required Minimum Distribution method, described here.
Click the link to pick up a copy of A Social Security Owner's Manual or if you'd prefer the Kindle version (and let's face it, ALL the cool kids do!), you can find that at this Kindle version link.Jim Blankenship, CFP®, EA, is an expert in personal retirement, IRAs, and tax issues, with more than 25 years of experience in the industry. Read more from this author

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