5 May

• Employer deductions payment due for 16 to 30 April for large employers.

07 May

• Your GST return and payment is due for the taxable period ending 31 March.
• Interim student loan repayments are due. They count towards your end-of-year repayment obligation.
• AIM instalments are due if you have a March balance date.
• Provisional tax payments are due if you have a March balance date and use the standard, estimation or ratio options.

20 May

• Employer deductions payment due for 1 to 15 May for large employers.
• Employer deductions payment due for April for small to medium employers.

28 May

• Your GST return and payment is due for the taxable period ending 30 April.
• AIM instalments are due if you file GST monthly and have a March balance date.