On their website the PBGC shows the maximum guarantee benefit at age 55 as $24,300. The PBGC shows the PV of guaranteed maximum in 2009 at age 55 as $349,238. This determination ostensibly uses the 2009 applicable mortality table and segment rates of 4.78%, 5.45%, and 5.46% I agree within reasonable tolerance for ages 65 and 62 but not at age 55, where the PBGC is about $5,000 higher.

Would someone mind checking as it appears one of the PBGC published guarantee or pv is off. Or alternatively, I am off, which is my self-accepted norm these days.!

I too am off from the published table at ages 55, 59 and 60 and at age 60 its by quite a bit. I figured it had something to do with the PBGC doing some behind the scenes comparison of imm v def benefits or something along those lines. We need to extend the table for younger ages so our computer systems have somthing to use we have asked the PBGC for those values. In the conversation with the PBGC, I asked about the value for ages 55. 59 and 60. I haven't heard back yet but can post back here if I do.

I believe you are onto something. If I look at the deferred value of $54,000 at 65 to a person age 55, I hit their number within reason ($349,065). This makes sense but I didn't anticipate they would do this. My mind was inside the box of immediate annuity. Perhaps this will address your 59 and 60 issues as well.