Home Office Deduction Calculator — New Zealand

If you work from home as a self-employed individual or sole trader in New Zealand, you may be able to claim a deduction for the business use of your home. Use this free calculator to estimate your allowable deduction under the Inland Revenue simplified flat-rate method.

Inland Revenue Home Office Rate (2024/25)

  • Flat rate: NZ$5 per month for each room used as a home office (simplified flat rate)
  • Eligible rooms: Rooms used exclusively or predominantly for business
  • Alternative: Actual cost method (proportion of rent, utilities, and mortgage interest)
  • Record keeping: Log days and hours worked from home throughout the year

How to Use This Calculator

  1. Enter the number of months (or hours/days) you worked from home
  2. Select the number of rooms used for business
  3. Enter your marginal tax rate
  4. See your estimated deduction and tax saving

Related New Zealand Tax Tools

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  • Pension Tax Relief Calculator
  • Tax Knowledge Base