My wife plans to retire at the beginning of next year and take SS (just of couple of months before age 64). Her earnings this year will certainly be high enough to be counted in her 35 highest earning years for purposes of calculating her SS monthly benefit. But the SSA will not have her earnings record for 2020 at the time she claims. How does the SSA take her last earning year into consideration? Or does she just lose the benefit of her last year of earnings? Should she wait a few months before claiming?