TSMC Monthly Sales Report - March 2004

Hsinchu, Taiwan, April 8, 2004 - Taiwan Semiconductor Manufacturing Company Ltd. (TSMC) (“the Company”) (TAIEX: 2330, NYSE: TSM) today announced that net sales for March 2004 totaled NT$19,972 million, representing a 8.6 percent growth over February 2004. On a year-over-year basis, net sales for March 2004 increased 44.2 percent.

Ms. Lora Ho, TSMC vice president and chief financial officer, noted that, “TSMC’s March 2004 sales increased sequentially as a result of higher wafer shipments and better product mix, which led to the rise of average selling price (ASP).”

“The Company’s revenues for the first quarter of 2004 were NT$57,513 million, reaching the same level as the record sales for the fourth quarter of 2003. It is expected that TSMC would generate even better revenues for the second quarter of 2004 due to an increased demand and a firmer pricing environment,” Ms. Ho added.

Sales Report: (Unit: NT$ million)

Net Sales

2004(1)

2003

Growth Rate

March

19,972

13,851

44.2%

January through March

57,513

39,325

46.3%

(1): Year 2004 figures have not been reviewed.