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 January 2007

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 December 2006 Sales Report

Hsinchu, Taiwan, R.O.C. — January 10, 2007 — TSMC (TAIEX: 2330, NYSE: TSM) today announced its net sales for December 2006: on an unconsolidated basis, sales were NT$22,376 million, a decrease of 9.4 percent from November 2006 and a decrease of 18.4 percent from December 2005. Full-year sales for 2006 increased 18.6 percent over 2005, to a record high of NT$313,882 million.

On a consolidated basis, net sales for December 2006 were NT$ 22,871 million, a decrease of 8.7 percent from November 2006; full-year sales for 2006 totaled NT$ 317,407 million.

TSMC Sales Report (Unconsolidated):

										(Unit: NT$ million)
Net Sales		2006*				2005				Increase (Decrease) %
December			22,376				27,416				(18.4	)
January through December			313,882				264,588				18.6

TSMC Spokesperson:

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

TSMC Acting Spokesperson:

Mr. J.H. Tzeng
Deputy Director, PR Department, TSMC
Tel: 886-3-505-5028
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: 886-3-505-5038
Mobile: 886-911-258751
Fax: 886-3-567-0121
E-Mail: cychung@tsmc.com

Taiwan Semiconductor Manufacturing Company Limited
January 10, 2007

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 December 2006.

1)

Sales volume (in NT$ thousand)

Period		Items				2006				2005
Dec.		Net sales					22,376,087				27,415,723
Jan.-Dec.		Net sales					313,881,635				264,588,364

2)

Funds lent to other parties (in NT$ thousand)

		Limit of lending				Dec.				Bal. as of period end
TSMC			96,227,225				—				—
TSMC’s subsidiaries			32,203,805				—				—

3)

Endorsements and guarantees (in NT$ thousand)

		Limit of endorsements				Dec.				Bal. as of period end
TSMC			120,284,032				—				—
TSMC’s subsidiaries			N/A				—				—
TSMC endorses for subsidiaries							—				—
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 Contracts		Notional Amount					—				26,894,880				—				—
		Mark to Market Profit/Loss					—				33,850				—				—
Expired Contracts		Notional Amount					37,187,474				423,526,934				2,944,840				2,944,840
		Realized Profit/Loss					8,962				(1,658,609	)			—				—

		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 Contracts		Notional Amount					10,709				—				—				—
		Mark to Market Profit/Loss					(113	)			—				—				—
Expired Contracts		Notional Amount					702,318				—				—				—
		Realized Profit/Loss					2,603				—				—				—

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.