Thus the results of that lovely 9% bump in SS monthly benefit for every year retirement delayed past "full SS benefit" retirement age. Also frozen pension benefit has to be recalculated to account for same amount of total benefit being spread out over fewer months. I don't know how calculation is done, but my pension (according to pension calculator app on Jetnet) "should" have been $515/month. (Due to post-9/11 furlough, I'm only credited with 15 years of service.) But I worked until age 72. My pension is about $650/month. A 26% increase over expected.