The Key Rule
An expense is not deductible simply because you own a rental property. It needs a sufficient connection with earning taxable rental income (or, where the activity is a business, with carrying on that business), and it must not be private or capital in nature. Specific tax rules can then modify the result.
At a Glance
| Usually deductible | Usually not deductible | Often needs a closer look |
|
|
|
Why the “business” distinction matters
Section DA 1 of the Income Tax Act 2007 has two alternative gateways to the deductibility of expenses. The first limb allows expenditure to the extent it is incurred in deriving assessable or excluded income. The second limb allows expenditure to the extent it is incurred in the course of carrying on a business for the purpose of deriving that income.
For a landlord whose activity is an investment rather than a business, the focus is on the connection between the particular expense and the process of earning rent. If the landlord is carrying on a rental business, the second limb enables a wider range of possible cost claims even though they are not readily matched to one particular rent receipt.
Whether a rental activity is a “business” is a question of fact. Courts have looked at the nature of the activity, duration, scale and volume, time and effort committed, pattern of operations, financial results and the taxpayer’s profit-making purpose. A single passively managed rental will not automatically be a business; an organised, sustained, actively managed portfolio can be.
|
Example – one rental investment versus an active rental business By contrast, assume Mia owns and actively self-manages eight rentals, keeps tenant and maintenance records at a dedicated home office, organises contractors, conducts regular inspections and devotes substantial time to the activity. On the overall facts the activity may amount to a business. Genuine home-office and administration overheads may then fall within the business limb, and the section DB 18AA square-metre method may be available for qualifying business use of the home. |
Important: there is no fixed number of properties that automatically makes a rental activity a business. The overall facts matter.
Common rental expenses – practical treatment
Rates and insurance
Generally deductible to the extent they relate to the income-earning rental. If the property has private use, an apportionment may be required.
Property management and collection fees
Generally deductible. This includes fees to collect rent and manage tenants.
Repairs and maintenance
Generally deductible where the work restores the property to its previous condition or deals with ordinary wear and tear. A repair is different from an improvement.
Improvements and capital work
Not immediately deductible under the ordinary expense rules. Work that creates a new asset, changes the character of the property, or improves it beyond its earlier condition is generally capital. Depreciation may be available for some separately identifiable depreciable assets.
Interest
From 1st April 2025, 100% of interest incurred on funds borrowed for residential rental property can be deductible again, provided the general deductibility requirements are met. Trace the use of the borrowed money: using the rental property merely as security for a private or unrelated loan does not make the interest deductible.
Mortgage principal
Not deductible. Repaying principal is repayment of the amount borrowed, not an expense of earning rent.
Accounting fees
Fees for preparing rental accounts and tax returns are generally deductible. Establishment or feasibility costs can be different and may be non-deductible or capital.
Legal fees
Legal fees connected with rental matters such as recovering unpaid rent or evicting a tenant can be deductible. Inland Revenue also states that legal fees incurred in buying a rental property may be deductible where total legal expenses for the income year are $10,000 or less. Larger or sale/acquisition-related amounts need specific review.
Chattels and depreciation
Depreciation can generally be claimed on depreciable furniture and fittings used to earn rental income. Residential buildings themselves are not depreciable for income tax purposes.
Body corporate levies
Ordinary levies for administration and routine maintenance are generally deductible. Amounts raised for capital improvements are not immediately deductible. Mixed levies should be split on a reasonable basis.
Travel and home-office costs: two areas to document carefully
Travel to the rental property
Inland Revenue’s March 2026 rental guide states that travel to inspect a property or carry out repairs may be deductible, with mixed private/rental travel apportioned. Its example allows only half of the travel and accommodation where a Wellington landlord spends half a Tauranga trip repairing a fence and half visiting a friend; if the trip is solely to visit the rental, the travel is fully deductible. Keep evidence of the rental purpose, itinerary, kilometres and costs.
Take extra care with travel that is really private, relates to acquiring a prospective property, or relates to selling a capital asset. The general home-to-work rules also remain relevant, so unusual or material travel claims should be checked on their facts.
Also take extra care with travel claims if you engage an agent to manage your rental, who is responsible for duties such as carrying out inspections and organising maintenance. In this case you will need evidence as to why you personally needed to visit the property. Simply driving by to check on your asset does not have sufficient connection with the earning of rental income to justify a travel claim.
Home office
A landlord may be able to claim an appropriate share of actual household costs where part of the home is genuinely used in the income-earning rental activity and there is a sufficient nexus to earning rent. The claim should reflect actual use and exclude private use. A dedicated area, regular rental administration and good records make the position more supportable than occasional emails from a kitchen table. If you engage an agent to manage your rental, this has been viewed by IRD as outsourcing of the rental administration therefore a dedicated home office claim is difficult to justify; instead you can claim the agency fees.
If the rental activity is a business, section DB 18AA provides a simplified square-metre method for qualifying business use of premises. For the 2026 income year the Commissioner’s rate is $57.30 per square metre. Mortgage interest, rates and rent are dealt with separately in the statutory formula. The square-metre method is a business-use method; it should not be assumed to apply to a passive rental investment merely because rent is being earned.
Two rules that affect the amount you can use now
Residential rental loss ring-fencing
Even where an expense is deductible, the residential rental loss ring-fencing rules can restrict when the deduction gives you a tax benefit. In broad terms, excess residential rental deductions are generally carried forward rather than offset against salary, wages or unrelated income. There are exclusions and portfolio rules, so the position should be checked where losses arise.
GST on ordinary residential rent
Ordinary residential rent is exempt from GST. A residential landlord generally does not charge GST on the rent and, for income tax purposes, claims the GST-inclusive amount of deductible expenses. Short-stay accommodation and other property activities can have different GST consequences.
Record-keeping checklist
Inland Revenue requires rental records to be kept for at least seven years. Useful records include:
- Invoices and receipts for repairs, rates, insurance, agent fees, legal and accounting costs.
- Loan statements and evidence showing what borrowed funds were actually used for.
- Repair descriptions, photos and contractor invoices that help distinguish repairs from improvements.
- Travel logs showing date, destination, kilometres, purpose and any private component.
- Home-office measurements, a floor plan, details of rental administration carried out at home and the basis of any apportionment.
- Body corporate budgets, levy notices and supporting documents showing whether levies fund operating costs or capital works
| Practical tip Describe the purpose of an expense when you record it, not months later at tax-return time. A short note such as “replace broken bedroom window after tenant damage” or “6-monthly inspection trip – no private component” can be valuable evidence of the income-earning connection and the revenue/capital treatment. |
Sources and further reading
- Income Tax Act 2007, ss DA 1 and DA 2 – general permission and general limitations
- Inland Revenue – Rental income IR264 (March 2026)
- Inland Revenue – Residential property interest limitation rules
- Inland Revenue – Home office expenses
- Tax Technical – 2026 square metre rate (OS 19/03 CPI 2026)
- Tax Technical – IS 25/01: deducting motor vehicle travel between home and work
- Tax Technical – Rental property partnership a business (case summary; Grieve factors)
Disclaimer: This newsletter article is general information only and is not tax advice for a particular taxpayer. Deductibility depends on the facts, ownership structure, private use, purpose of expenditure and any specific rules applying to the property or activity. Please contact us on 07 885 1022 before taking a position on material, unusual or mixed-purpose expenditure.