This excerpt taken from the ACL 20-F filed Mar 15, 2005.
(p) Income Taxes
The Company recognizes deferred income tax assets and liabilities for temporary differences between the financial reporting basis and the tax basis of the Companys assets, liabilities and expected benefits of utilizing net operating loss and credit carryforwards. The impact on deferred income taxes of changes in tax rates and laws, if any, are applied to the years during which temporary differences are expected to be settled and reflected in the financial statements in the period of enactment. Withholding taxes have been provided on unremitted earnings of subsidiaries which are not reinvested indefinitely in such operations. Dividends paid by subsidiaries to Alcon, Inc. do not result in Swiss income taxes.