TSMC April 2006 Sales Report

Hsinchu, Taiwan, R.O.C. - May 10, 2006 - TSMC (TAIEX: 2330, NYSE: TSM) today announced that net sales for April 2006, on an unconsolidated basis, were NT$27,162 million; on a consolidated basis, net sales were NT$27,388 million (Revenues from foreign subsidiaries were translated by monthly average exchange rate).

On the unconsolidated basis, April 2006 net sales increased 0.2 percent over March 2006 and grew 43.7 percent year-over-year. Revenues for January through April 2006 totaled NT$104,456 million, an increase of 40.1 percent over the same period of 2006.