The Canada Revenue Agency (CRA) has released a draft version of the publication Payroll Deductions Formulas for Computer Programs – 94th Edition (t4127-11e-draft). This publication contains the formulas needed to determine federal, provincial (except Quebec), and territorial income taxes, Canada Pension Plan (CPP) contributions, and Employment Insurance (EI) premium deductions.
As some legislation is still pending regarding Federal and some provincial tax changes, this draft version has only been updated to reflect changes known as of May 16th. These changes include new personal tax credit amounts for Manitoba, Nova Scotia and Saskatchewan as well as income tax rate bracket changes for New Brunswick. A fully revised publication containing all changes effective July 1, 2011 is slated to be released around mid-June.
Visit the CRA website to access this publication as well as the previous version for tax changes effective January 1, 2011.

