The IRD have set up a special page on their Website covering all the tax changes that are occurring on October 1st.  These include:

• Personal Tax Changes
• GST Increase to 15%
• Working for Families Tax Credits
• Employers FBT and ECST rates
• Depreciation changes
• ACC Earner Levy increase (due to GST)
• Proposed changes for April 1st

You can find their page HERE!