Both US GAAP & IFRS require provisions for corporate income tax and deferred tax. Income / deferred tax is governed by IAS 12 under IFRS. Under US GAAP it is ASC 740 which governs income / deferred tax.
Check out following resources for more details on the rules & principles used by IAS 12 & ASC 740
http://mcgladrey.***/pdf/ifrs_income_taxes.pdf
http://***.pwc.***/en_US/us/cfodirect/assets/pdf/insight/5190.pdf
http://***.pwc.***/gx/en/mining/school-of-mines/2012/pwc-current-issues-in-income-tax-accounting-us-gaap-and-ifrs-pt-1.pdf