Biden Changes P.P.P. Rules to Help the Self-Employed A more generous loan formula for solo ventures is meant to get more very small businesses into the Paycheck Protection Program. But bigger applicants face a two-week pause. “Getting our economy back means bringing our small businesses back,” Mr. Biden said Monday.Credit...Doug Mills/The New York Times Published Feb. 22, 2021Updated March 16, 2021 Aiming to put its own stamp on the Paycheck Protection Program, the Biden administration on Monday abruptly changed crucial program rules in ways intended to help the smallest and neediest companies, which have sometimes struggled to obtain aid from the federal relief effort.