Tax deductions for NZ rental property owners

Why understanding tax deductions matters

Owning a rental property in New Zealand comes with a range of expenses, and many of them are tax-deductible. Knowing what you can legitimately claim against your rental income can make a meaningful difference to your annual tax bill — and getting it wrong can lead to penalties from Inland Revenue (IRD).

The rules are set out primarily in the Income Tax Act 2007, with additional guidance published by IRD. Some of these rules changed significantly with the introduction of interest limitation provisions in 2021, so if you've been relying on older advice, it's worth checking that your understanding is still current.

This guide covers the most common deductions available to residential rental property owners in 2026.

Deductible expenses: what you can claim

The general principle is straightforward: if an expense is incurred in deriving your rental income, it's likely deductible. Here are the main categories.

Mortgage interest (with limitations)

Prior to the Taxation (Annual Rates for 2021–22, GST, and Remedial Matters) Act 2021, mortgage interest on residential investment properties was fully deductible. That changed with the phased introduction of interest limitation rules.

For properties acquired on or after 27 March 2021, interest deductibility has been fully denied since 1 April 2025 — unless you qualify for an exemption (such as new builds, which retain full deductibility for 20 years from the date the code compliance certificate is issued).

For properties acquired before 27 March 2021, interest deductibility has been progressively reduced. From 1 April 2025, only 25% of interest can be claimed. From 1 April 2026, it drops to zero — unless the Government announces further changes.

There are exceptions and nuances, so check IRD's guidance or speak to your accountant if you're unsure where your property sits.

Insurance

Premiums for landlord insurance, building insurance, and contents insurance (if you provide furnishings) are fully deductible. This includes cover for loss of rent, natural disaster, and liability.

Rates

Local council rates — both general and water rates — are deductible for the period the property is available for rent.

Property management fees

If you use a property manager, their fees are deductible. If you self-manage, you cannot claim a deduction for your own time, but you can claim for specific costs you incur in managing the property.

Repairs and maintenance

Repairs that restore the property to its original condition are deductible in the year they're incurred. This includes fixing a broken window, repainting weathered exterior cladding, replacing worn carpet, and repairing plumbing leaks.

The critical distinction is between repairs and improvements. A repair restores something to its previous condition. An improvement makes it better than it was. If you replace a broken single-pane window with a like-for-like single-pane window, that's a repair. If you upgrade it to double glazing, the cost attributable to the upgrade is a capital improvement and must be depreciated instead.

Body corporate fees

If your rental property is a unit title (apartment or townhouse in a body corporate), the levies you pay are deductible. This includes both operating fund and long-term maintenance fund contributions.

Travel to the property

You can claim travel expenses for trips specifically related to managing your rental property — inspecting the property, meeting tradespeople, or attending to maintenance issues. If the trip has a dual purpose (for example, you combine a property inspection with a personal holiday), only the portion directly related to the property is deductible.

Since the IRD's guidance on travel deductions has tightened over the years, keep clear records of the purpose of each trip.

Legal and accounting fees

Fees paid to lawyers and accountants for services related to your rental activity are deductible. This includes the cost of preparing your rental tax return, advice on tenancy matters, and drafting or reviewing tenancy agreements.

However, legal fees associated with purchasing or selling the property are capital costs and are not deductible.

Advertising for tenants

The cost of advertising your property for rent — whether through Trade Me, social media, or a "for rent" sign — is deductible.

Depreciation on chattels

While depreciation on residential rental buildings was removed in 2011 (for buildings with an estimated useful life of 50 years or more), you can still depreciate chattels — items like curtains, blinds, carpets, appliances, and furniture you provide. IRD publishes standard depreciation rates for common items.

Expenses you cannot claim

Not everything is deductible, and claiming expenses that don't qualify can result in reassessment and penalties.

• Capital improvements. As noted above, costs that improve the property beyond its original state must be capitalised and depreciated, not claimed as an immediate deduction.
• Your own labour. You cannot claim a deduction for the time you spend managing or maintaining the property yourself.
• Private use. If you use the property for personal purposes for part of the year (for example, a holiday home that you also rent out), you need to apportion expenses between deductible rental use and non-deductible private use.
• Purchase costs. Legal fees, valuation fees, and other costs associated with buying the property are capital costs.

Record-keeping: your most important habit

Good records are the foundation of legitimate tax deductions. IRD expects you to retain records for at least seven years, and if you're ever audited, the burden of proof falls on you to substantiate your claims.

At a minimum, keep:

• Receipts and invoices for all expenses
• Bank statements showing mortgage interest payments
• A log of property-related travel (date, purpose, kilometres or costs)
• Insurance policy documents and premium receipts
• Depreciation schedules for any chattels

Organising this documentation throughout the year is far easier than scrambling before your tax return is due. If you use a tool like keel to manage your rental property, you can store receipts and track expenses alongside your property records — which makes tax time considerably less painful.

Final thoughts

Tax deductions can meaningfully improve the financial performance of your rental property, but only if you understand the rules and keep proper records. The interaction between interest limitation rules, the bright-line test, ring-fencing of rental losses, and depreciation can be genuinely complex — particularly if you own multiple properties. A good accountant will ensure you're claiming everything you're entitled to and nothing you're not. Their fee, as noted above, is itself deductible.

Stay organised, keep receipts, and get professional advice where the rules are unclear. The upfront effort will save you money — and stress — when it matters most.