Hi back MWL:
I think we were working off a different set of assumptions, both based on our own situations. I am going to be 62 early next year. I have already stopped working. My PIA will be based on my best 35 years of adjusted earnings. My PIA will not change over the next eight years. I am excluding any cost of living adjustments, since they apply equally to the PIA and to benefits which are always percentages of the PIA. It sounds as if you are still working, so there are two versions of the question:
1) stop work at 63 and then compare taking benefits at 63 vs waiting to take benefits at 66. This is similar to my situation, but I don't think it is yours.
2) start benefits as soon as you stop work. Compare stopping at 63 versus stopping at 66. In this case, working to 66 adds three more years of work that probably will make your top 35 years. This would increase your PIA. My guess this is what your local administrator was talking about.
You are obviously better off financially working from 63 to 66, more so because of your three years of earnings than from the increased social security benefits.
"There are no additional credits for survivor (as opposed to spousal) benefits after full retirement age in the case of a spouse already drawing,"
I am not sure about this. Whose full retirement age are you talking about? My understanding is that if the worker delays taking benefits until after age 66, to 70 for example, the increased worker benefits will in turn benefit the survivor after the worker dies. Here is a quote from POMS.
The 1977 amendments provide an alternate method for computing the widow(er)'s original benefit, to include the DNH's DRCs.
The DRCs will be added to the widow(er) benefit if:
NH was entitled to RIB and MBA was increased by DRCs or
NH would have been entitled to RIB and MBA would have been increased by DRCs.
DRC is delayed retirement credit, NH is number holder (the worker), RIB is retirement insurance benefit, and MBA is monthly benefit amount. The widower gets the delayed retirement credits added if the worker was already receiving a monthly benefit increased by the DRC or if he was age 68 and would have been entitled if he had not died.
Widow's benefits are reduced if the widow is under 66 when benefits begin, but there is no reduction that I can find for previously taking spousal benefits. If the spouse is previously taking her own retirement benefits, then the dual entitlement rules come into play. For someone entitled to both retirement benefits on her own record and survivor benefits based on her husband's record, the rule is
Method B - Both benefits calculated and reduced independently; small MBA paid plus excess of larger MBA.
NOTE: If larger MBA is a RIB or DIB just pay the RIB or DIB.
In other words, you calculate her retirement benefit (reduced if she started before FRA) and her widow's benefit (including and delayed retirement credits on her husband's record) independently. If the widow's benefit is larger, they pay her own (small) retirement benefit plus the difference between the (larger) widow's benefit and the RIB. For example, if the reduced RIB is $400 and the Widow's benefit is $1200, they pay $400 plus the excess of $800, a total of $1200. There is no loss for her starting retirement benefits early since the computations are done independently and the total benefit equals the larger benefit.
There are lots of details in the law and regulations, but I think a lot of people need more education. I too often read "the spouse will get 50% of the worker's benefit" as if it applies no matter what the ages of the people involved and when they start benefits.
Good luck with whatever you decide!
Al