NZ Rental Property Tax, Start to Finish: A Landlord's Year
You made a loss on your New Zealand rental this year, so you assume there is nothing to file. That loss is actually money you can use later.
The short answer: filing and paying are two different things — even in a loss year the rental schedule, the IR3R, must be filed. Five steps: the agent's annual statement → a dedicated account → three groups of deductions → two traps (interest follows the use of the money; repairs versus improvements) → where a loss goes (ring-fencing). This article covers what happens when, what to keep, and what we do; the full deductions list is in What can a landlord actually claim?.
What does a landlord's year look like?
The tax year runs 1 April to 31 March. In order:
| When | What happens | You | Us |
|---|---|---|---|
| All year | Rent in, expenses out | Everything through the rental's own bank account; keep invoices | Questions answered as they arise |
| 31 March | Tax year ends | Ask the property manager for the annual statement; download the full-year bank statement; get the bank's interest certificate | Send you the records checklist |
| April–June | Assembly | Send invoices, statements and bank records in one batch | Rental financial statements + IR3R; repairs/capital split; depreciation schedule |
| 7 July | Filing date for people who file themselves | — | Clients of a tax agent have an extension |
| 31 March following | Filing date for tax-agent clients | Review and sign | File the IR3 with the IR3R |
| 7 April following | Terminal tax date for tax-agent clients | Pay | You know the figure well in advance |
Steps one and two: where do the figures come from, and why a separate account?
If a property manager runs the property, ask for the annual statement at year end: the year's rent, management fees and maintenance are all on it, and the return starts there. Self-managed? Rent records and the tenancy agreement are the start.
Then give the rental its own bank account: all rent in, all expenses out, and at year end the statement is the ledger. The saddest outcome is an expense paid from a personal account, forgotten by March, and a deduction lost. The separate account is also what makes trap one provable.
Step three: what is deductible? Three groups keep it tidy
Group one, keeping the property: insurance, rates, repairs and maintenance, water. Group two, getting it rented: management fees, letting advertising, accounting fees, travel to inspect or repair. Group three, the ones people miss: the interest portion of the mortgage, body corporate fees, bank fees on the account, and depreciation on chattels — carpet, curtains, stove, heat pump; items costing $1,000 or less are claimed in full in the year bought. The itemised list is in What can a landlord actually claim?.
Trap one: interest follows where the money went, not which property secures it
Each mortgage payment is principal plus interest; only the interest is deductible. From 1 April 2025 interest on a residential rental is deductible in full (1 April 2024 to 31 March 2025 was 80%).
The sentence to remember: whether interest is deductible depends on what the borrowed money was spent on, not on which property is mortgaged. IR264 lists as non-deductible "interest on money you borrow for some purpose other than financing the rental property, even if you use the rental property to secure the loan". Borrow $200,000 against the rental: spend it on a second rental and the interest is deductible; spend it on a car, a holiday or your own home and none is.
Same repayment, two methods, opposite results — why?
The most common question is about revolving credit, the large overdraft facility secured on a house. Same $200,000:
| Method A | Method B | |
|---|---|---|
| What you did | Drew a revolving credit facility and repaid the rental's $200,000 loan | Repaid the $200,000 from savings, debt to nil; later drew $200,000 from the facility for a car or your own home |
| Use of the money | Repaying the rental debt — a refinance | Private spending — a brand-new borrowing |
| Interest deductible? | Yes. IR264: refinancing up to the level of the original loan does not affect deductibility | No, even though the facility is secured on the rental |
The only difference: was the money used to repay debt, or to spend? If the limit steps down and you top up and redraw, trace each drawing the same way — which is why rental and private money need two accounts. And once the property is fully repaid there is no "buying the rental" left to borrow for, so spare cash usually goes first against the non-deductible loan on your own home.
Trap two: repair or improvement?
IRD's test: restoring the property to its previous state is a repair, deductible in the year; making it better than when you bought it is capital. IR264's examples — a broken shower head, plastering and painting a crack, a blown hot-water-cylinder element — are repairs; a run-down property renovated before renting, or a deteriorated wall replaced with a conservatory, are capital. Capital hurts most: residential buildings depreciate at 0%, so the capitalised amount gives no deduction and only enters the cost base when you sell. Only chattels keep depreciating. Our separate repairs-versus-improvements article sorts the jobs.
What is ring-fencing, and where does the loss go?
Many landlords assume a rental loss offsets their salary. It does not. Under ring-fencing, residential rental deductions are capped at residential rental income; IRD states excess deductions cannot be offset "against other income such as salary or wages".
The loss is not wasted. Excess deductions carry forward against future residential rental income, and are released only when the property is sold and that sale is itself taxable; with a portfolio, every property must be sold and every sale taxable before anything reaches salary. Several properties sit on the portfolio basis by default; to treat one on its own you must elect in the return for the year it first becomes a rental, and a move back into the portfolio is one-way.
Final reminders
- No chattels valuation when you bought? Get one now — every year's depreciation depends on it.
- Do the repairs yourself and your own time is not deductible, only the materials.
- Bond money received from MBIE for rent arrears, and occasional short-stay income, are income.
- Keep every record for 7 years, even after you stop renting the property out.
That is the whole process: agent statement, dedicated account, what is deductible, two traps, where a loss goes. General information, not tax advice for any one person — your own return will show different figures.
FAQ
My rental made a loss this year. Do I still file? Yes. Filing and paying are different things. In a loss year the IR3R is still filed with rent and expenses set out in full. The loss is recorded and carried forward against future rental income; not filing throws away a deduction you could use later, and the non-filing is itself a problem.
I borrowed against the rental to renovate my own home. Is the interest deductible? No. IR264 lists interest on money borrowed for another purpose as non-deductible "even if you use the rental property to secure the loan". Deductibility follows the use of the borrowing, not the security. Within one facility, the part spent on a second rental is deductible and the part spent privately is not, so every drawing must be traceable.
What do I send my accountant at year end? The property manager's annual statement (or your own rent records and tenancy agreement), the full-year statement for the rental's bank account, the bank's interest certificate, insurance and rates invoices, every repair and purchase invoice, body corporate statements, and the chattels valuation from purchase. Complete records and a separate account make the statements fastest.
Talk to us
Rental returns are our everyday work. Book a free 15-minute consultation: call 021 202 4028, email info@optimalaccountants.co.nz, or use our contact page. Rental property financial statements are $350 +GST per property; the personal return (IR3) is separate, from $700 +GST — see rental property accounting and services and prices. Optimal Accountants Limited, Level 3, Candida Building, 4/61 Constellation Drive, Rosedale, Auckland (North Shore). Chartered Accountant, CA ANZ member. English and Mandarin.