Rental Property Tax in New Zealand 2026 - Complete Guide
Rental income is taxable in New Zealand. This guide explains deductions, mortgage interest, bright-line rules, ring-fencing, mixed-use property and IR3 filing.
Updated April 2026
Rental income in New Zealand is taxable. Every dollar you earn from rent must be declared, and you pay income tax on your profit - income minus allowable expenses. The good news is that most legitimate costs of owning and managing a rental are deductible, including mortgage interest, which was fully restored from 1 April 2025.
How to declare rental income
Rental income is declared in your IR3 individual tax return, filed through myIR. You include a rental income schedule, IR3R, showing your total rent received and all deductible expenses. The net profit or loss flows into your IR3.
The tax year runs 1 April to 31 March. Returns are due by 7 July unless you have a tax agent.
If you jointly own a rental property, each owner declares their share of the income and expenses in proportion to their ownership.
What expenses you can deduct
You can claim expenses incurred while the property is rented out or available to rent.
| Expense | Deductible? |
|---|---|
| Mortgage interest | Yes - 100% from 1 April 2025 |
| Council rates | Yes |
| Insurance | Yes |
| Property management fees | Yes |
| Repairs and maintenance | Yes |
| Advertising for tenants | Yes |
| Accounting fees | Yes |
| Depreciation on chattels | Yes |
| Cost of the building itself | No - 0% depreciation since 2011 |
| Capital improvements | No - these are added to your cost base |
| Private expenses | No |
Example: Ben owns a rental in Christchurch. His annual expenses are $28,000 mortgage interest, $3,200 rates and insurance, $2,400 property management fees, and $800 for repairs. His gross rent is $28,600. His net rental income is $28,600 minus $34,400 in expenses - a $5,800 loss, which carries forward under ring-fencing rules.
Interest deductibility - what changed
This is the biggest change in rental property tax in recent years.
| Period | Interest claimable |
|---|---|
| Before March 2021 | 100% |
| Oct 2021 to Mar 2024 | 0% to 25%, phased restriction |
| Apr 2024 to Mar 2025 | 80% |
| From 1 April 2025 | 100% |
From 1 April 2025, you can generally claim 100% of mortgage interest on residential rental properties, subject to the normal rules that the borrowing must relate to the rental activity.
Important exceptions:
- If your mortgage is a revolving credit or offset facility linked to personal accounts, you can only claim the portion that relates to the rental.
- Mixed-purpose loans must be apportioned - you can only claim the rental portion.
- Ring-fencing still applies - rental losses can only offset rental income, not your salary or other income.
Example: Sarah has a $500,000 mortgage on her rental at 6.5% interest - around $32,500 per year. From April 2025 she can claim the full $32,500 as a deduction. At a 33% tax rate, that is a saving of $10,725 per year compared with a period where zero interest was deductible.
Bright-line test
The bright-line test taxes profits when you sell a residential property within a set period of buying it.
| Sale date | Bright-line period |
|---|---|
| From 1 July 2024 | 2 years |
| 27 Mar 2021 to 30 Jun 2024 | 10 years, or 5 years for new builds |
| 29 Mar 2018 to 26 Mar 2021 | 5 years |
For sales from 1 July 2024, the rule is simple: sell within 2 years of the bright-line start date and any profit may be taxable income at your marginal rate.
For a standard purchase, the bright-line start date is when title transferred to you, generally settlement date. For a standard sale, the end date is when you enter into a binding sale and purchase agreement, not settlement.
Main home exclusion: The bright-line test generally does not apply to a sale of property that has been your main home, if your use meets the criteria. If you rented it out for part of the time, you may only be partially exempt.
Example: Tom buys a rental on 1 March 2024. He sells it in February 2026 - just under 2 years later. The bright-line test applies. His $120,000 profit is added to his income for the year and taxed at his marginal rate.
Even outside the bright-line period, a sale can still be taxable if you bought with the intention of resale or are considered a property dealer under other land sale rules.
Mixed-use property - baches and holiday homes
If you use a property privately for some of the year and rent it out for the rest, the mixed-use asset rules apply when the property is unused for 62 or more days in a year.
Under these rules you can only claim a proportion of your expenses - based on the number of days it was rented out versus days used privately. Days the property was empty are excluded from both calculations.
Example: The family bach is rented for 80 days, used privately for 30 days, and empty for the remaining 255 days. Deductible expenses are calculated as 80 / (80 + 30) = 72.7% of total costs.
Owning rental in a company vs personally
| Personally | Company, Ltd | |
|---|---|---|
| Tax rate | Marginal, up to 39% | Flat 28% |
| Ring-fencing | Yes | Yes |
| Bright-line | Applies | Applies |
| Complexity | Low | Higher - separate returns and compliance costs |
| Structure rules | Simple ownership | Company and look-through company rules may matter |
Holding property in a company can reduce tax at higher income levels - but compliance costs, setup, financing, and the interaction with other rules mean it is not always worth it. Get advice before structuring this way.
How to file - IR3 and rental schedule
1. Log into myIR at ird.govt.nz.
2. File an IR3 individual tax return for the tax year ending 31 March.
3. Complete the IR3R rental income schedule - list total rent received and all expenses.
4. Net rental profit or loss flows into your IR3.
5. Submit by 7 July, or later if you have a tax agent.
Keep receipts, invoices, bank statements, and mortgage interest certificates for at least 7 years.
FAQs
Do I have to declare rental income if I just rent a room?
Yes. Renting a room in your home is taxable income. However, if you rent to a boarder under the standard-cost method, the 2026 weekly standard-cost amount is $245 per boarder. If the amount you receive is within the standard-cost rules, there may be no taxable income to return for that boarder.
Can I deduct the cost of buying the property?
No. The purchase price is a capital cost, not a deductible expense. However, it forms your cost base for bright-line calculations when you sell.
Can rental losses reduce my salary tax?
No. Ring-fencing rules mean rental losses can only offset rental income - from the same property or other rentals, depending on the basis you use. Losses carry forward to future rental income.
What if I renovate the property?
Repairs and maintenance are deductible. Improvements that add value or extend the life of the property are capital expenditure - not immediately deductible, but they may be added to your cost base.
Does GST apply to residential rentals?
No. Long-term residential rental is exempt from GST. You cannot charge GST on rent, and you cannot claim GST on expenses. Short-stay accommodation is different - GST can apply where the activity exceeds the registration threshold, and online marketplace rules may also matter.
What records do I need to keep?
All rental income received, all expense receipts and invoices, mortgage interest certificates, insurance and rates notices, and any correspondence with tenants. Keep everything for at least 7 years.
Work out your numbers
Use the TaxPop Rental Income Calculator to estimate rental profit, deductions, and tax.
Other useful tools: Bright-line Calculator, Income Tax Calculator, and GST Calculator.
General information only - not tax advice. Sources: IRD rental property deductions, IRD bright-line test, and IRD standard-cost boarding rate.