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COVID-19 - Level 4 Inland Revenue will continue to provide services throughout the COVID-19 response, including paying Working for Families. Please use our online services as phone contact is severely limited. Find out more >

Income tax Dates

  • MAR 31
    Final date for ratio option provisional tax applications.
  • APR 7
    End-of-year income tax and Working for Families bills are due if you have an extension of time to file your income tax return.
  • MAY 7
    Provisional tax payments are due if you have a March balance date and use the standard, estimation or ratio options.

You'll need to send us an Imputation group maintenance form - IR475 form if:

  • a company – including a Trans-Tasman imputation company – joins or leaves an existing imputation group 
  • there's a change to an imputation group's nominated company.

Gather your information

For each company or consolidated group you will need the:

  • IRD number
  • name of imputation group
  • current imputation credit account (ICA) balance (if joining).

Fill in the IR475 and send it to us