The threshold for student loan has increased from the present rate of $19084 to $19136 commencing on 1 April 2017.
Student Loan Scheme (Repayment Threshold) Regulations 2016
Section 3 Annual repayment threshold
The amount of the annual repayment threshold for the tax year commencing on 1 April 2017 and subsequent tax years is $19,136.
Reference: http://legislation.govt.nz/regulation/public/2016/0295/latest/DLM7042103.html?src=qs