Is Australia or New Zealand a lower-tax country?

For most income levels, Australia's take-home pay is higher on the same nominal salary because Australia has an $18,200 tax-free threshold whereas New Zealand taxes from dollar one at 10.5%. At $80,000 gross, NZ take-home is $62,387 (78.0% net) versus AU $63,612 (79.5% net). That gap narrows and sometimes reverses at very high incomes because Australia's top marginal rate (45%) is reached earlier ($190k) than NZ's 39% ($180k).

How does KiwiSaver compare to Australian Superannuation?

KiwiSaver is opt-in (though auto-enrolled from age 18); Australian Super is mandatory for anyone earning over $450/month. The employer minimum is moving from 3% to 3.5% in NZ (from 1 April 2026), versus Australia's Superannuation Guarantee at 12% (final step, effective 1 July 2025). At most salaries, mandatory Australian Super contributions outweigh voluntary KiwiSaver by a wide margin — but they are reported as employer cost, not an employee deduction.

If I move from NZ to Australia, what happens to my tax residency?

You generally cease NZ tax residency 325 days after leaving (or earlier if you break your permanent place of abode). You become Australian tax-resident when you 'reside' there — usually after 183+ days in the tax year (1 July – 30 June). The NZ–Australia double tax agreement prevents most double taxation. Super contributions continue in Australia; KiwiSaver can be transferred via the trans-Tasman retirement savings portability scheme.

Is there GST/VAT difference between NZ and Australia?

Yes — New Zealand's GST is 15% (one of the simplest GST systems in the world, with almost no exemptions). Australia's GST is 10%, but it has more exemptions (fresh food, most health and education). Effective consumption-tax burden varies by spending pattern; Australians typically pay less GST on a dollar-for-dollar basis but more income tax on incomes above ~$80k.

NZ vs Australia Tax — Side-by-Side Comparison for 2025-26

New Zealand and Australia share a lot of economic history but their tax systems diverge in ways that matter a great deal if you're a trans-Tasman migrant or comparing job offers. This page compares income tax, social levies, retirement savings, and GST — using official IRD (2025-26) and ATO (FY 2025-26 post-Stage 3) rates.

Take-home pay on the same nominal salary

Figures use the same dollar amount as both an NZD salary (taxed by IRD) and an AUD salary (taxed by ATO). Currencies are not directly comparable at current exchange rates — this is a structural tax comparison, not a cost-of-living comparison.

Gross salary	NZ income tax	NZ ACC levy (1.67%)	NZ take-home	AU income tax	AU Medicare (2%)	AU take-home	Gap
$50,000	$7,658	$835	$41,507	$5,788	$1,000	$43,212	+$1,705
$80,000	$16,278	$1,336	$62,387	$14,788	$1,600	$63,612	+$1,226
$120,000	$29,478	$2,004	$88,519	$26,788	$2,400	$90,812	+$2,294
$180,000	$49,278	$2,552	$128,171	$47,938	$3,600	$128,462	+$291

Gap column shows how much more (+) or less (−) you'd take home in Australia vs. New Zealand on the same nominal gross salary. Figures exclude retirement (KiwiSaver / Super) to isolate the tax-only effect.

Income tax brackets — side by side

🇳🇿 New Zealand (2025-26)

$0–$15,600: 10.5%
$15,601–$53,500: 17.5%
$53,501–$78,100: 30%
$78,101–$180,000: 33%
$180,001+: 39%

No tax-free threshold. Brackets unchanged for 2026-27 (no Budget 2025 changes announced).

🇦🇺 Australia (FY 2025-26)

$0–$18,200: 0%
$18,201–$45,000: 16%
$45,001–$135,000: 30%
$135,001–$190,000: 37%
$190,001+: 45%

Stage 3 brackets in effect from 1 July 2024. $18,200 tax-free threshold. Plus 2% Medicare levy on top.

Key structural differences

Feature	🇳🇿 New Zealand	🇦🇺 Australia
Tax-free threshold	None — taxed from $1	$18,200
Top marginal rate	39% over $180,000	45% over $190,000 (+2% Medicare = 47%)
Social/health levy	ACC earner's levy 1.67% (capped at $152,790, 2025-26)	Medicare levy 2% (phase-in $27,222–$34,027)
Mandatory retirement	KiwiSaver opt-in (auto-enrol from 18); employer min 3% (3.5% from 1 Apr 2026)	Superannuation Guarantee 12% (mandatory, employer-paid)
Student loan	12% of income over $24,128	HELP 1%–10% of income over $54,435 (progressive)
Capital gains	No general CGT; 2-year bright-line on property	CGT at marginal rate; 50% discount for 12+ month assets
GST rate	15% (broad base, few exemptions)	10% (fresh food, health, education exempt)
Stamp duty on property	None (federal); some regional transfer fees	State-based, typically 3%–7% of purchase price

Retirement: KiwiSaver vs Superannuation

The biggest structural difference is the retirement scheme. Australian Super is mandatory: every employer must contribute 12% of ordinary time earnings on top of your salary (the full Superannuation Guarantee rate from 1 July 2025). KiwiSaver is opt-in, with employer minimum moving from 3% to 3.5% on 1 April 2026 (and to 4% on 1 April 2028). Employees choose a contribution rate of 3%, 4%, 6%, 8% or 10%.

In dollar terms: at an $80k salary, an Australian employee accumulates $9,600/year of mandatory Super (paid on top of salary). A Kiwi employee on the default 3% + 3% match accumulates $4,800/year in KiwiSaver (split employee/employer). The difference compounds to very large numbers over a 40-year career.

There is a trans-Tasman retirement savings portability scheme — you can transfer KiwiSaver to an Australian Super fund and vice versa when you move. The transferred balance preserves its tax-preferred treatment but is subject to the receiving country's rules for withdrawal age and taxation.

If you're moving NZ → Australia

Tax residency: You cease NZ tax residency after 325 days abroad (or earlier if your permanent place of abode moves). You become AU tax-resident when you "reside" there — commonly after 183+ days in the 1 Jul–30 Jun tax year.
Double tax agreement: The NZ–Australia DTA prevents most double taxation. Typical pattern: you're taxed where you reside, and your former country taxes only residual source income.
KiwiSaver → Super: Transfer via the trans-Tasman portability scheme — tax-free at transfer, subject to Super preservation rules thereafter.
Student loan: NZ student loan deductions continue under the overseas-based borrower schedule — a flat annual amount based on loan balance, regardless of your AU income. Typical $5k/year on balances $45k+.

If you're moving Australia → NZ

Tax residency: NZ residency triggers after 183 days in any 12-month period, or earlier if you have a "permanent place of abode" here. AU residency ends on your departure date (Commissioner's discretion in close cases).
Super → KiwiSaver: Transfer via the portability scheme. NZ applies PIR tax to investment earnings going forward; AU Super preservation age rules still apply to the transferred portion.
Lower take-home at mid incomes: The absence of a tax-free threshold means NZ take-home is typically lower than AU on the same nominal salary at $50k–$120k. GST at 15% (vs AU 10%) also adds to cost of living.
No mandatory Super equivalent: You'll need to actively join KiwiSaver and choose a contribution rate — it is not automatic mid-career.

NZ PAYE Calculator

Calculate your NZ take-home on any salary and tax code.

NZ Take-Home Pay Calculator

Full take-home including ACC, KiwiSaver, and student loan.

KiwiSaver Calculator

Employer + employee contributions at 3%–10%.

Australian Tax Tools (austax.tools)

Sister site — AU PAYG, Super, HELP, stamp duty, and more.

Sources

NZ figures: IRD tax rates, 2025-26. Australian figures: ATO individual income tax rates, FY 2025-26 (Stage 3). Superannuation Guarantee 12% effective 1 July 2025.