HIS article presents the 1997 benchmark inputoutput (I-O) accounts, the latest in a series of accounts that provide the most detailed, integrated information available on the structure of the U.S. economy. The I-O accounts—including the detailed once-every-5-year benchmark accounts and the less detailed annual updates—provide an extensive accounting of the production of goods and services by each industry and commodity, which includes the goods and services purchased by each industry, the incomes earned in each industry, and the distribution of sales for each good and service to industries and final users. 1 They also detail each industry’s contribution to gross domestic product (GDP) and to its counterpart gross domestic income (GDI).