Rental Property Depreciation in NZ: Why It's Gone, What Replaced It, and What Small Investors Can Do

If you bought a rental property before 2011, you probably remember the good years. You could claim depreciation on the building, offset it against your rental income, and then sell the property at a gain that was completely untaxed. Two bites of the apple. It was a clear double dip for investors - and most of us knew it would not last forever.

It didn't. Building depreciation was removed in the 2010 Budget, effective from the 2011-12 income year. The logic from the government was blunt but hard to argue with: if you're going to enjoy capital gains tax-free, you can't also claim the building is simultaneously wearing out. Pick one. They picked for us.

That was fifteen years ago. A lot has changed since, and not all of it in landlords' favour. Here's where things actually stand now, and what I think small investors - people with one to four properties - should be focusing on instead of waiting for tax policy to rescue us.

Why depreciation was removed, and why it's not coming back

The depreciation removal wasn't ideological. It was a coherence argument. New Zealand doesn't have a general capital gains tax on property. That means when you sell your rental, any appreciation in the land value and (historically) the building value is yours to keep. The government's position was that you can't depreciate an asset that isn't actually losing value in any economic sense - buildings in most NZ markets have appreciated significantly over the decades.

That argument was credible in 2010 and it's still credible now. Even with the recent softening in property values, buildings in most parts of New Zealand are worth more in nominal terms than they were fifteen years ago. There's no serious political constituency for restoring building depreciation while capital gains remain untaxed. The two are linked.

You can still claim depreciation on chattels - heat pumps, dishwashers, carpet, and so on. But chattels are a small fraction of a property's value. The big deduction, the one that actually moved the needle, is gone.

Interest deductibility: the level playing field problem

The other major deduction story of recent years is interest. The previous Labour government phased out mortgage interest deductibility for residential rental properties, starting in 2021. It was a significant hit, particularly for highly leveraged investors. National reversed it after winning the 2023 election, and interest is now fully deductible again.

My view on this one is more nuanced than the landlord lobby position. Yes, claim it while it is there - you'd be a fool not to. But the argument for removing it is not as unreasonable as some landlords think. Residential investors can deduct mortgage interest against rental income. A first-home buyer with a mortgage on the same house cannot deduct any of it. That asymmetry is real, and it does not look good in a country where housing affordability is a live political issue.

At the same time, there is a sound business argument on the other side. Any business in New Zealand can deduct interest on borrowing used to generate income. Removing that deduction for landlords while leaving it intact for every other business is selective treatment of one asset class. A widget factory deducts its interest. Why shouldn't a landlord?

The cleanest resolution - and this is where I end up - is the US model. The United States allows mortgage interest deductibility on your primary residence, up to a sensible cap on the loan value. The cap matters: you don't want the government subsidising the interest bill on a mansion. But it levels the playing field properly. Owner-occupiers and investors are treated the same, both can deduct, and there's no structural distortion in either direction.

In New Zealand right now, we do the opposite of level. Investors get the deduction; owner-occupiers don't. The person trying to buy their own home is at a disadvantage compared to the investor bidding against them. Whether that's the intended outcome or a side effect of standard business-tax logic applied to housing is a question for politicians. I'll leave it there.

What I'd say practically: claim it fully while it exists, model your cashflow at both ends - with and without - so you know what happens if a future government removes it again. Don't build your long-term investment thesis around it staying forever.

Capital gains: the case against CGT is shakier than it looks

Here's the thing about New Zealand not having a capital gains tax on property: the premise that investors are sitting on untaxed windfalls is looking shakier by the year.

Property prices peaked in late 2021 and have been soft since. Net migration, which drove demand through much of the 2010s and early 2020s, turned sharply negative in 2024-25. Interest rates rose hard and fast from 2022, and while they've come down from their peaks, they're not back to the near-zero settings that made leveraged property investment look effortless.

The practical result is that many investors who bought at the peak are not sitting on untaxed gains. They're sitting on unrealised losses, or at best a modest nominal gain that inflation has largely eaten. More than 40% of apartment resales in Q1 2026 were sold at a loss - close to one in five Auckland apartments. A CGT introduced in a stagnant or falling market would not raise much revenue - and it could actually generate large capital loss claims that reduce other tax revenue. That's the first complication: a proper CGT has to allow capital losses. You can't tax gains while refusing to recognise losses. If the government introduces CGT when prices fall further, it inherits a wave of loss claims.

The second complication is capital improvements. If you spend $50,000 renovating a property and then sell it at a gain, any fair CGT regime must let you deduct the renovation cost from the gain. Otherwise you're taxing money you never actually made. The mechanics of tracking what counts as a capital improvement versus a deductible repair are complex and contested, and this is before you get into disputes about partial improvements or improvements that also serve to maintain the property.

The third complication is inflation. If you bought in 2010 for $400,000 and sell in 2026 for $600,000, your nominal gain is $200,000. But if cumulative inflation over those 16 years is 40%, your real gain is closer to $40,000. A CGT on the nominal gain taxes you on $200,000. That is partly a tax on inflation you had no control over. Most OECD countries with CGT include some form of inflation indexation for this reason, and designing that indexation is a genuine policy challenge. Worth noting: while the RBNZ survey shows inflation expectations ticking back up in the short term, longer-term expectations have actually eased - but two or three percent annually still compounds meaningfully into a nominal gain over a decade.

None of this means a CGT won't happen. New Zealand is an outlier among OECD members in not having a broader CGT, and the political logic exists even when the will isn't there. The bright-line test - currently 2 years for most properties - is already a de facto CGT for short-to-medium term investors. The door is open.

So what are the levers that actually still exist?

This isn't meant to be a doom post. I'm still in property and I think it makes sense for most small investors to stay in property. But the tax environment has changed substantially since the golden era, and some of the assumptions people built their models on no longer hold.

The levers that remain:

Interest deductibility - claim it fully while it exists, and model your cashflow with and without so you know what a policy change means for your position.

Operating expense deductions - repairs (not improvements), insurance, rates, accounting fees, travel to inspect properties. These haven't changed and they add up.

Chattel depreciation - a good accountant will do a chattel valuation when you buy. It's not a huge number but it's real money over five to ten years.

Management costs - this one is underrated. It's not a tax benefit directly, but it affects your actual return more than most investors realise.

The real numbers on management fees

Property managers typically charge somewhere between 7% and 10% of gross rental income, plus a letting fee of 1-2 weeks rent each time a tenancy starts, plus inspection fees, plus a margin on repairs. Add it all up and for a property renting at $600-650 per week, you're often looking at $3,500-6,000 a year in management costs. For two or three properties, that adds up to a significant number.

For small investors - people with one to four properties who actually know their tenants and their properties - paying those fees for the convenience of not dealing with it yourself is a real choice. Some people don't want the hassle and they're willing to pay. That's fine. But for others, the fee structure doesn't actually reflect the amount of work involved once you've got good tenants settled in.

I built RentManager partly because I wanted to see if the "hassle" argument held up when you had decent software. My experience: once a tenancy is running smoothly, it's maybe 20-30 minutes a week across my four properties. Rent tracking, maintenance requests, a reminder when an inspection is due. The hard parts - finding tenants, sorting inspections, dealing with arrears - are less frequent than people expect, and they're manageable when you have a system. See why I moved away from a property manager for more on that.

The management fee is a deductible expense, yes. But deducting a dollar to save 33 cents - or 39 cents if your total income exceeds $180,000 - still means you're spending 61 to 67 cents on the dollar. The goal is to not spend the dollar in the first place.

The bigger picture: stop waiting for policy to rescue your returns

I've talked to a lot of landlords who are waiting. Waiting for interest rates to come down further. Waiting for property values to recover. Waiting to see what happens with interest deductibility. Waiting to see if a CGT gets introduced.

Some of that waiting is sensible. You shouldn't do anything rash. But the tax environment for residential property investment in New Zealand has moved in one direction over fifteen years, and betting on it reversing is not a sound strategy. Depreciation is gone. CGT may come. Interest deductibility is fragile.

The lever you have right now, that doesn't depend on any of that, is your cost structure. A landlord spending $5,000 a year on management fees across two properties and switching to a low-cost tool is looking at roughly $4,800-4,900 saved annually. That's not a tax deduction. That's actual money in your pocket, compounding every year.

I offer RentManager starting at $9/month - less than most landlords spend on a single Tribunal filing. I built it for landlords like me: not wanting the overhead of a big PM firm, not wanting to manage everything in a spreadsheet, just wanting the routine stuff handled without drama. Read more about what property management actually costs if you want to run the numbers.

The property market will do what it does. Tax policy will continue to evolve in ways none of us can fully predict. The one thing you can control is what you spend. That's where I'd focus.