New Mortgage Interest Deduction Rules for NZ Rental Property Owners (2025 Update)
Are you still claiming mortgage interest on your NZ rental property?
Here’s what’s changed under the latest IRD rules:
- 🏠 Interest deductibility is being phased out for residential rentals
- 💡 Some exemptions apply (e.g. new builds, boarding houses)
- 🧾 You’ll need to track interest expenses separately for eligible and ineligible properties
Make sure you update your rental income calculations and keep evidence of how loans are applied.
Need a hand interpreting the rules? We're here to help.