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 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 December 2005 Sales Report

Hsinchu, Taiwan, R.O.C. — January 9, 2006 — TSMC (TAIEX: 2330, NYSE: TSM) today announced that net sales for December 2005 totaled NT$27,416 million. Full-year sales for 2005 increased 3.4 percent over 2004, to a record high of NT$264,588 million.

Compared to the record monthly high of November 2005, net sales for December 2005 decreased slightly by 0.4 percent. On a year-over-year basis, net sales for December 2005 increased 37.6 percent.

TSMC Sales Report:

										(Unit: NT$ million)
Net Sales		2005*				2004				Increase (%)
December			27,416				19,919				37.6
January through December			264,588				255,992				3.4

*		Year 2005 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: 886-3-666-5028
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
January 09, 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 December 2005.

1) Sales volume (in NT$ thousand)

Period		Items		2005				2004
Dec.		Invoice amount			29,667,047				24,135,472
Jan — Dec.		Invoice amount			253,694,258				252,526,938
Dec.		Net sales			27,415,724				19,919,338
Jan — Dec.		Net sales			264,588,364				255,992,427

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

		Limit of lending				Dec.				Bal. as of period end
TSMC			82,222,226				—				—
TSMC’s subsidiaries			32,454,749				(1,866,690	)			1,149,750

3) Endorsements and guarantees (in NT$ thousand)

		Limit of endorsements				Dec.				Bal. as of period end
TSMC			102,777,783				(66,600	)*			3,285,000
TSMC’s subsidiaries			N/A				—				—
TSMC endorses for subsidiaries							(66,600	)*			3,285,000
TSMC’s subsidiaries endorse for TSMC							—				—
TSMC endorses for PRC companies							—				—
TSMC’s subsidiaries endorse for PRC companies							—				—

*		The deviation was due to the fluctuation in currency exchange rate.

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 Contracts		Notional Amount			2,004,420				69,945,008
		Mark to Market Profit/Loss			28,475				802,728			—
Expired Contracts		Notional Amount			159,919,975				287,622,578			—
		Realized Profit/Loss			1,271,687				(4,886,421	)		—

Taiwan Semiconductor Manufacturing Company Limited
January 09, 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 December 2005.

1) Sales volume (in NT$ thousand)

Period		Items		2005				2004
Dec.		Invoice amount			29,667,047				24,135,472
Jan — Dec.		Invoice amount			253,694,258				252,526,938
Dec.		Net sales			27,415,734				19,919,338
Jan — Dec.		Net sales			264,588,364				255,992,427

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

		Limit of lending				Dec.				Bal. as of period end
TSMC			82,222,226				—				—
TSMC’s subsidiaries			32,454,749				(1,866,690	)			1,149,750

3) Endorsements and guarantees (in NT$ thousand)

		Limit of endorsements				Dec.				Bal. as of period end
TSMC			102,777,783				(66,600	)*			3,285,000
TSMC’s subsidiaries			N/A				—				—
TSMC endorses for subsidiaries							(66,600	)*			3,285,000
TSMC’s subsidiaries endorse for TSMC							—				—
TSMC endorses for PRC companies							—				—
TSMC’s subsidiaries endorse for PRC companies							—				—

*		The deviation was due to the fluctuation in currency exchange rate.

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 Contracts		Notional Amount			2,004,420				69,945,008			—
		Mark to Market Profit/Loss			28,475				802,728			—
Expired Contracts		Notional Amount			159,919,975				287,622,578			—
		Realized Profit/Loss			1,271,687				(4,886,421	)		—

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.