Are you due a slice of $300 Million Dollars?
If you were in your first year of self-employment between 2002 and 2017, or paid provisional ACC levies after ceasing trading, ACC may owe you a refund.
Check out the link below for more details:
IRD Taxation Changes - Pay-As-You-Earn Option
From April 2018, small businesses, sole traders and contractors can choose a new pay-as-you-earn option, rather than paying provisional tax in instalments several times a year.