ACC client details
ACC are now essentially the same as IRD, they do not accept or issue cheques - they require your current bank account information for refunds.
When you log into your ACC account online you will be prompted to check & update your client details and to add your refund bank account details.
When this is completed you (the client) will receive an email notification advising of these changes. Your agent or advisor may do this on your behalf.
If you receive an email from them & you're worried this is not legit? Get in touch.