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Depreciation claim - calculate your tax deduction

About this calculator

This calculator is used to calculate depreciation on a business asset.

You will need to know the depreciation rate that applies to the asset – you can get this from our depreciation rate finder.

Use of this tool does not result in data being submitted to us.

When to use this calculator

Use this calculator when assets are purchased in earlier income years:

  • If you've already claimed depreciation in earlier years - enter the first day of this income year as the purchase date.
  • For buildings that you haven't depreciated before - use the original purchase price.
  • For other assets that you haven't depreciated before - use the current market value.

Note: The depreciation rate for buildings with a life of 50 years is 0%.

Do not use this calculator for petroleum mining assets as different depreciation rules apply to them. For more information please contact us or your tax advisor.

Note: Assets costing $500 or less (including loose tools) may not need to be depreciated.

This calculator will take about five minutes to complete.

What you will need
  • Your balance date
  • The cost of the asset (if you are GST registered, use GST-exclusive cost, if not GST registered, use GST-inclusive cost).
  • Date of purchasing the asset
  • The percentage of business use - if not 100%
  • Details of any assets you have sold or disposed of.
After you finish

If you’re printing pages for several assets, these details will allow you to distinguish between the pages. They are not recorded by the website or stored in any way.

No information you provide while using the calculator is recorded, saved or in any way referenced by Inland Revenue. The calculator is stored on a secure part of our website to prevent unauthorised interception. If you are unable to access the calculator, you may need to update your browser and/or firewall settings.