Reviews estimates of tax revenue losses from the September 11 terrorist attacks, done by the New York City Office of Management and Budget and the New York State Division of Budget. Follow-up to earlier report (GAO-02-700R, "Review of studies of the economic impact of the September 11, 2001, terrorist attacks on the World Trade Center") issued May 29, 2002.

Finds that, despite difficult circumstances, charitable aid made a major contribution to the response to the September 11 attacks. Identifies areas for future improvements to charitable responses in disasters, including easing access to aid, enhancing coordination among charities and between charities and the Federal Emergency Management Agency, increasing attention to public education, and planning for future events.