Larry: "When calculating a person's countable earnings for purposes of the trial work period (TWP) and substantial gainful activity (SGA), Social Security goes by the amount a person earns in a month, not the amount they are paid. However, Social Security will default to using the amount paid in a month unless they have evidence needed to show how much the person actually earned in the month"
Can you please tell me where it states this on the Soc. Sec. Website?

Hi. Those rules are explained in section DI 10505.005.C.1 of Social Security's operations manual. Here is a link to that reference: https://secure.ssa.gov/apps10/poms.nsf/lnx/0410505005#c.

Best, Jerry