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New Zealand tax tool

Depreciation Calculator NZ

Use this NZ depreciation calculator to estimate first-year deductions using the listed New Zealand diminishing value depreciation rates.

How it works

Applies the selected diminishing value rate to the entered asset cost. Applies to qualifying depreciable business assets. Capital assets are treated differently from ordinary expenses.

DV ratesComputers 67% · Vehicles 30% · Machinery 25% · Furniture 18% · Software 50%
Method shownDiminishing value

Use the calculator

Use the live tool above to enter your figures, compare outcomes, and sense-check the result before you rely on it for planning. This page is built for business owners and accountants reviewing tax deductions on depreciable assets.

  • Pick the correct asset class before using a rate.
  • Depreciation reduces taxable income, not cash directly.
  • Opening and closing tax values should be tracked each year.

Official IRD guidance

Check the official IRD guidance for the latest published rules, thresholds, timing, and definitions that apply to Depreciation.

Open official guidance www.ird.govt.nz/income-tax-calculator/income-tax-for-businesses-and-organisations/types-of-business-expenses/depreciation

Disclaimer

This calculator provides estimates only and does not replace official IRD calculations.

  • Uses a one-year DV estimate.
  • Does not model partial-year ownership.
  • Assumes the selected class rate is appropriate.

Frequently asked questions

What does this depreciation calculator show?

It estimates a first-year deduction using the selected diminishing value rate.

Can I use it for software or vehicles?

Yes, the widget includes separate example rates for several common asset classes.

How do I use this Depreciation tool?

Use the live tool above, enter the amounts that match your situation, and review the estimate together with the official guidance linked on this page.

Does this replace official IRD calculations?

No. This calculator or guide provides estimates and general information only, so you should still confirm the final position with official IRD guidance or professional advice where needed.

Where can I verify this with IRD?

Use the official guidance linked on this page to check the published rules, thresholds, filing expectations, and definitions that apply to Depreciation.