If you no longer meet the criteria for the subsidy (where you have estimated your turnover will be down by 30% but this has not occurred), and or no longer using the subsidy to retain and pay your employees then you will need to repay the unused portion of the wage subsidy. This would be a change in circumstance impacting on the eligibility for the subsidy and therefore need to repay.
You can email COVID19subsidy_overpayment@msd.govt.nz to disclose any overpayment.
You will need to include the following information in your email:
New Zealand Business Number (NZBN), if you have one
And advise the amount overpaid and the reason