Who exactly does Labour’s business exemption actually protect?

A carve-out that doesn’t quite carve out

Labour is selling its capital gains tax as narrow, targeted, and something nine out of ten New Zealanders will never pay. Businesses, the pitch goes, are excluded. The family home is out. Farms, KiwiSaver, shares and retirement savings are all safe.

The policy would apply a 28% rate to gains on investment and commercial property from July 2027, and it isn’t retrospective. Labour projects an average of $700 million a year, building from $100 million in year one to $1.4 billion by year four.

Here is where the slogan runs into the design. The tax doesn’t hit the sale of a business as an entity. It hits commercial property. And a large number of New Zealand small businesses operate from a building the owner also owns.

When the premises are the business

For a dairy operator, a motel owner or a suburban mechanic, the commercial building isn’t a separate investment sitting off to the side. It is often the retirement plan, the asset accumulated over decades of running the shop. Sell up after 30 years and the increase in the property’s value, including the portion driven purely by inflation, could be taxed.

Finance Minister Nicola Willis put it bluntly in October 2025, calling it “a tax on every single business in New Zealand” and pointing to the corner dairy owner operating from a building that will get taxed. That is political framing, but the mechanics behind it are real.

Labour’s answer is rollover relief. Sell one commercial property and buy another to keep trading, and the tax is deferred. The problem is that relief only helps continuing operators. The mechanic winding down, the dairy owner cashing out, the motelier retiring, the very people using the building as long-term financial planning, don’t buy a replacement. They exit. And on exit, the tax lands.

Labour’s own blueprint told it not to do this

The part most coverage has skipped is that Labour was warned, by the document its policy is based on. The design draws from the minority view of the 2018/19 Tax Working Group. But it deviates on one important point. The minority view did not recommend including commercial property, and Labour put it in scope anyway.

That minority view explicitly warned that “land and buildings can be inextricably integrated with business activities” and that the costs of extending the base exceeded the benefits. Deloitte’s analysis reached the same conclusion, noting the minority view saw commercial buildings as “likely to cause higher complexity, including the need for roll-over relief, compliance costs and inconsistencies” beyond any taxing benefit.

By including commercial property, Labour recreated the exact problem the blueprint predicted, then bolted on rollover relief to partly patch it.

Narrow is not the same as harmless

To be fair, there is a case for the policy’s simplicity. University of Otago tax expert Craig Elliffe called it the “cleanest, simplest, most administratively simple form of capital gains tax” in October 2025, one that would be straightforward to implement. Labour’s revenue spokesperson Deborah Russell insisted in April 2026 that it is “tightly targeted”.

But narrow relative to a full CGT is not narrow for the SME owner selling their premises. And the timing sharpens it. Victoria University’s Professor Lisa Marriott warned in November 2025 that with property values mostly flat or falling, “the impact of the CGT may be felt outside the intended group”.

There’s a fiscal wrinkle too. Roughly $550 million a year is earmarked for Medicard, but interest.co.nz noted the CGT revenue is “lumpy and unreliable, disappearing during downturns and surging with upswings”, a shaky foundation for a recurring health commitment.

What business owners should watch

This is not a tax that will damage a $435 billion economy. But its impact is concentrated, and it falls on a specific, identifiable group, owner-operators whose premises and enterprise are the same asset. Labour’s line that businesses are excluded is technically defensible and practically slippery.

Deloitte’s other warning is the one to keep in mind. Opponents will read the commercial property inclusion as “the start of a slippery slope”, with more asset types added once the machinery is built. For a business owner planning an exit in the next decade, the question isn’t just what the 2027 rules say. It’s what they become once the tax exists.

Sources

• Nicola Willis slams Labour’s capital gains tax plan: ‘It’s a terrible idea’ (2025-10-28)
• Willis attacks Labour’s capital gains tax plan, says small businesses could face tax bills (2026-09-02)
• Labour’s ‘watered down’ CGT satisfies few (2025-10-29)
• Labour’s Russell says only tax policy its campaigning on is CGT, accuses National of lying about it (2026-04-16)
• Labour’s mini-CGT sets a small target but has big loopholes, including for the ‘family home’ – Thomas Coughlan
• Election Tax Policies, part two