Monthly Sales Report - May 2000Sales Exceed NT$10 Billion

Science-Based Industrial Park, Hsinchu, Taiwan, June 9, 2000 - Taiwan Semiconductor Manufacturing Company Ltd. ("TSMC" or the "Company") (TAIEX:2330, NYSE:TSM) announced details in respect to the payment date of its previously-announced 28% stock dividend that related to its NYSE-listed American Depositary Shares ("ADSs") to be June 16, 2000.

The record date for ADSs entitled to participate in this stock dividend is May 17, 2000. The ADS ex-dividend date is May 15, 2000. The distribution date with respect to the upcoming stock dividend is expected to be June 16 for the ADSs (and June 12 for the common shares) respectively. Holders of ADSs are encouraged to check with their securities brokers for the receipt of the stock dividend in their own accounts.

Any questions regarding this stock dividend issue may be directed to,

Investor Relations Tel:886-3-567-2664 E-Mail: Invest@tsmc.com.tw or,

Public Relations Tel:886-3-567-5020