I have earnings now (post-retirement) that are likely enough to replace some of the lower earning years currently included in my benefit calculation. Will those years initiate a benefit recalculation and a possible retro adjustment, even though I am now well into my retirement period. I am currently just shy of 72 and I did not take my retirement benefit until age 70.

Hi,

Yes, regardless of your age you can still increase your Social Security retirement benefit rate if you earn more in a year than you did in one of your previous highest 35 years of Social Security covered wage-indexed earnings. Social Security automatically recomputes benefits to consider higher years of earnings, so you shouldn't need to do anything in order to get any benefit increases for which you qualify. However, you could optionally submit to Social Security proof of your higher earnings (i.e. W-2 form for wages or Schedule SE from a tax return for self-employment earnings) along with a written request for a manual recomputation.

Best, Jerry