SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER
PURSUANT TO RULE 13a-16 OR 15d-16 OF
THE SECURITIES EXCHANGE ACT OF 1934

Taiwan Semiconductor Manufacturing Company Ltd.

(Translation of Registrant’s Name Into English)

No. 8, Li-Hsin Rd. 6,
Hsinchu Science Park,
Taiwan
(Address of Principal Executive Offices)

     (Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.)

Form 20-F þ		Form 40-F o

     (Indicate by check mark whether the registrant by furnishing the information contained in this form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.)

Yes o		No þ

(If “Yes” is marked, indicated below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82: ___.)

 

 

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.”

Sales Report:

(Unit: NT$ million)

Net Sales		2006*				2005				Increase (Decrease) %
March			27,107				17,610				53.9
January through March			77,293				55,653				38.9

TSMC Spokesperson:

Ms. Lora Ho
Vice President and CFO
Tel: 886-3-566-4602

TSMC Acting Spokesperson:

Mr. J.H. Tzeng
PR Department Manager, TSMC
Tel: 886-3-666-5028
Mobile: 0928-882607
Fax: 886-3-567-0121
E-Mail: jhtzeng@tsmc.com

For further information, please contact:

Richard C.Y. Chung
Media Relations Manager, TSMC
Tel: 886-3-666-5038
Mobile: 886-911-258751
Fax: 886-3-567-0121
E-Mail: cychung@tsmc.com

Taiwan Semiconductor Manufacturing Company Limited

April 10, 2006

This is to report the changes or status of 1) sales volume, 2) funds lent to other parties, 3) endorsements and guarantees, and 4) financial derivative transactions for the period of March 2006.

1) Sales volume (in NT$ thousand)

Period		Items				2006				2005
Mar		Net sales					27,106,885				17,610,390
Jan — Mar		Net sales					77,293,344				55,653,217

2) Funds lent to other parties (in NT$ thousand)

		Limit of lending				Mar				Bal. as of period end
TSMC			82,222,226				—				—
TSMC’s subsidiaries			32,069,441				175	*			1,136,100

3) Endorsements and guarantees (in NT$ thousand)

		Limit of endorsements				Mar				Bal. as of period end
TSMC			102,777,783				300	*			1,947,600
TSMC’s subsidiaries			N/A				—				—
TSMC endorses for subsidiaries							300	*			1,947,600
TSMC’s subsidiaries endorse for TSMC							—				—
TSMC endorses for PRC companies							—				—
TSMC’s subsidiaries endorse for PRC companies							—				—

4) Financial derivative transactions (in NT$ thousand)

     Hedging purpose (for assets / liabilities denominated in foreign currencies)

						Forward				Swap				Others
Margin Payment							—				—				—
Premium Income (Expense)							—				—				—
Outstanding		Notional Amount					1,202,448				74,913,295				—
Contracts		Mark to Market Profit/Loss					(4,343	)			(291,326	)			—
Expired		Notional Amount					2,255,571				105,435,446				—
Contracts		Realized Profit/Loss					87,126				1,585,470				—

SIGNATURES

     Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.