Skip to main content

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 can claim environmental expenditure as an expense if: 

  • the taxpayer is in business in New Zealand
  • the taxpayer’s business includes testing, construction, restoration, or monitoring
  • it does not include land reclamation, non-environmental dredging or expenditure related to the acquisition of land
  • it does not relate to revenue account property
  • tax deduction is not provided for elsewhere, including farming business expenditures that are not covered by specific agricultural provisions.

Deduction rates

The default deduction rates cover 4 categories of costs.

  • Testing and feasibility expenditure: 100% deductible.
  • Restoration expenditure: 100% deductible.
  • Monitoring expenditure: 100% deductible.
  • Construction or improvement expenditure is either:
    • the lesser of either 35 years (1/35 deductible per year)
    • the length of the applicable resource consent granted (1/life of resource consent deductible per year). You can use a straight-line deduction or adjust the rate to give a diminishing value deduction.

If the default deduction rates do not result in the correct calculation and taxation of income from business activities, you can apply to us for a category-specific rate.

Destruction or closure

If an environmental improvement is destroyed or a business closes, you can claim the remaining unamortised balance of the expenditure - the original cost, minus any deduction already claimed.