You must read the declaration and sign the return as being true and correct.
Self-assessment by taxpayers
Taxpayers are required to assess their own liability as part of meeting their return filing obligations. Inland Revenue may amend your assessment if a correction is required.
If you dispute our assessment please go to www.ird.govt.nz/disputes for more information. The four-month period for you to issue a notice of proposed adjustment (NOPA) to your self-assessment will start on the date Inland Revenue receives your return.
Are there any penalties?
You may face penalties and prosecution if you:
are required to put in a return but don’t
give false or misleading information (including not showing all your income)
leave out details on purpose so the information is misleading
file your return late.