Post-Disaster Assistance Online Accountability Act This bill establishes a centralized location to publish information on disaster assistance provided by federal agencies. The Small Business Administration, the Department of Housing and Urban Development, and any agencies providing disaster assistance must make available to the public on a quarterly basis information regarding (1) the total amount of assistance provided by the agency; (2) the amount provided that was expended or obligated; and (3) all projects or activities for which assistance was expended, obligated, or used.