1934 Act Registration No. 1-14700

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

For the month of August 2006

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 July 2006 Sales Report

Hsinchu, Taiwan, R.O.C. — August 10, 2006 — TSMC (TAIEX: 2330, NYSE: TSM) today announced its net sales for July 2006: on an unconsolidated basis, sales were NT$27,567 million, an increase of 1.0 percent over June 2006 and an increase of 32.2 percent over July 2005. Revenues for January through July 2006 totaled NT$186,087 million, an increase of 37.8 percent over the same period in 2005.

On a consolidated basis, net sales for July 2006 were NT$27,959 million, an increase of 1.1 percent over June 2006; revenues for January through July 2006 totaled NT$187,968 million.

TSMC Sales Report (Unconsolidated):

(Unit: NT$ million)

Net Sales		2006*				2005				Increase (Decrease) %
July			27,567				20,847				32.2
January through July			186,087				135,017				37.8

* Year 2006 figures have not been audited.

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: 886-3-505-5028
Mobile: 0928-882607
Fax: 886-3-567-0121
E-Mail: jhtzeng@tsmc.com

For further information, please contact:

Michael Kramer
Principal Specialist, TSMC
Tel: 886-3-505-6216
Mobile: 886-926-026632
Fax: 886-3-567-0121
E-Mail: pdkramer@tsmc.com

Taiwan Semiconductor Manufacturing Company Limited
August 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 July 2006.

1) Sales volume (in NT$ thousand)

Period		Items				2006				2005
July		Net sales					27,566,707				20,847,066
Jan.-July		Net sales					186,087,397				135,016,500

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

		Limit of lending				July				Bal. as of period end
TSMC			95,586,606				—				—
TSMC’s subsidiaries			32,361,880				0				0

3) Endorsements and guarantees (in NT$ thousand)

		Limit of endorsements				July				Bal. as of period end
TSMC			119,483,257				21,420	*			1,965,360
TSMC’s subsidiaries			N/A				—				—
TSMC endorses for subsidiaries							21,420	*			1,965,360
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)

     TSMC

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

														Others
						Forward				Swap				Buy put				Sell call
Margin Payment							—				—				—				—
Premium Income (Expense)							—				—				—				—
Outstanding		Notional Amount					311,625				75,077,007				—				—
Contracts		Mark to Market
		Profit/Loss					(1,512	)			(487,145	)			—				—
Expired Contracts		Notional Amount					12,106,245				251,381,186				639,620				639,620
		Realized Profit/Loss					37,581				(452,430	)			—				—

     TSMC’s subsidiaries

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

														Others
						Forward				Swap				Buy put				Sell call
Margin Payment							—				—				—				—
Premium Income (Expense)							—				—				—				—
Outstanding		Notional Amount					7,070				—				—				—
Contracts		Mark to Market													—				—
		Profit/Loss					99				—				—				—
Expired		Notional Amount					463,844				—				—				—
Contracts		Realized Profit/Loss					2,650				—				—				—

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.