If we do your 2-monthly or 6-monthly GST returns or your yearly Income Tax returns we keep you notified of what you owe the IRD and when it is due. This includes your provisional tax should you need to pay this. Especially if you are a GST client we begin ringing you early in the month it is due, and keep ringing until we receive it. We do not leave these returns until the last minute, but do them as soon as they come in.