TSMC March 2006 Sales Report

Hsinchu, Taiwan, R.O.C. - April 10, 2006 - TSMC (TAIEX: 2330, NYSE: TSM) today announced that net sales for March 2006 totaled NT$27,107 million. Revenues for the first quarter of 2006 were NT$77,293 million, higher than the first quarter guidance of between NT$73 billion and NT$76 billion.

Ms. Lora Ho, TSMC vice president and chief financial officer, noted that, “Due to the increase of wafer shipments, March 2006 sales grew 12.9 percent sequentially. On a year-over-year basis, net sales for March 2006 increased 53.9 percent.”