Is Australia or the UK a lower-tax country?

For most working incomes, Australia takes home more on the same nominal salary because the Stage 3 brackets (16% / 30%) are flatter than the UK's 20% / 40% combined with NI 8% / 2%. At 80,000.00 gross, AU take-home is 63,612.00 (effective 20.5%) versus UK 56,957.40 (effective 28.8%). The gap narrows above £100,000 due to UK Personal Allowance taper and inverts at very high incomes because Australia's top rate (45% + 2% Medicare = 47%) kicks in earlier ($190,000) than the UK's 45% (£125,140).

How does Australian Super compare to UK pension auto-enrolment?

Australia's Superannuation Guarantee is 12% of ordinary time earnings, mandatory, paid on top of salary by the employer (legislated maximum from 1 July 2025). The UK's auto-enrolment minimum is 8% combined (3% employer + 5% employee), reaching the employee from gross salary. AU Super contributions don't reduce take-home pay; UK contributions do. AU Super is preserved until age 60 (preservation age); UK pension access is age 55 (rising to 57 from 2028).

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

AU tax residency typically ends when you cease to 'reside' there — usually on the date of departure, subject to the Commissioner's tests (domicile, 183-day, superannuation test). UK residency triggers under the Statutory Residence Test (SRT) — most commonly when you spend 183+ days in a UK tax year (6 April – 5 April), or after 91 days with a UK tie. The AU-UK double tax treaty prevents most double taxation; you'll generally pay tax to the country where you live and work, with credit for the other.

What about Australian Super if I move to the UK?

Australian Super is not transferable to a UK pension under any portability scheme — there's no equivalent to the trans-Tasman scheme between AU and UK. Your Super continues to be preserved in AU until preservation age. From 2017, AU Super funds are no longer recognised as Qualifying Recognised Overseas Pension Schemes (QROPS), so transfers from UK pensions to AU Super are now heavily restricted. Take advice before any cross-border pension moves.

Is GST/VAT different between Australia and the UK?

Yes — Australia's GST is 10%, with exemptions for fresh food, most health, and education. The UK VAT standard rate is 20%, with a reduced rate of 5% on domestic energy and a 0% rate on most food, children's clothing, and books. Effective consumption-tax burden is significantly higher in the UK on most discretionary spending, but lower on essentials.

Australia vs UK Tax — Side-by-Side Comparison for 2025-26 / 2026-27

Australia and the UK both use progressive PAYE-style income tax with mandatory employer pension contributions and a national health levy — but the structural details differ enough to materially change your take-home and your retirement trajectory if you cross corridors. This page compares income tax, social levies, retirement, and consumption tax using ATO 2025-26 figures and HMRC 2026-27 figures (UK tax year starts 6 April).

Take-home pay on the same nominal salary

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

Gross salary	AU income tax	AU Medicare (2%)	AU take-home	UK income tax	UK NI (8%/2%)	UK take-home	Gap
50,000.00	5,788.00	1,000.00	43,212.00	7,486.00	2,994.40	39,519.60	+3,692.40
80,000.00	14,788.00	1,600.00	63,612.00	19,432.00	3,610.60	56,957.40	+6,654.60
120,000.00	26,788.00	2,400.00	90,812.00	39,932.00	4,410.60	75,657.40	+15,154.60
180,000.00	47,938.00	3,600.00	128,462.00	67,831.50	5,610.60	106,557.90	+21,904.10

Gap column shows how much more (+) or less (−) you'd take home in Australia vs. the UK on the same nominal gross salary. Excludes pension/super contributions to isolate the tax-only effect. AU figures use ATO Stage 3 brackets (FY 2025-26); UK figures use HMRC rest-of-UK 2026-27 (Scotland uses different rates).

Income tax brackets — side by side

🇦🇺 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 force from 1 July 2024. $18,200 tax-free threshold. 2% Medicare levy on top (phase-in $27,222–$34,027). Stage 3+ phase 2 drops 16%→15% on 1 July 2026.

🇬🇧 United Kingdom (2026-27, rest of UK)

£0 – £12,570: 0% (Personal Allowance)
£12,571 – £50,270: 20% (Basic)
£50,271 – £125,140: 40% (Higher)
£125,141+: 45% (Additional)

Personal Allowance tapers £1-for-£2 above £100,000 (full PA gone at £125,140) — creating an effective 60% marginal band. Plus Class 1 employee NI: 8% £12,571–£50,270, 2% above. Scotland uses different rates (5 bands, top 48%).

Key structural differences

Feature	🇦🇺 Australia	🇬🇧 United Kingdom
Tax-free threshold	$18,200	£12,570 (taper above £100k)
Top marginal rate	45% over $190,000 (+2% Medicare = 47%)	45% over £125,140 (+2% NI = 47%)
Effective marginal trap	Div 293: 30% Super tax above $250k income	60% effective on £100k–£125,140 (PA taper)
Social/health levy	Medicare levy 2% (+ MLS 1%–1.5% if no PHI above $101k)	Class 1 NI: 8% main, 2% upper; employer NI 15%
Mandatory retirement	Superannuation Guarantee 12% (employer-paid, on top of salary)	Auto-enrolment 8% combined (3% employer + 5% employee, from salary)
Tax year	1 July – 30 June (fiscal year)	6 April – 5 April
Filing deadline	31 October (self) / 15 May (agent)	31 January online (Self Assessment)
Capital gains	Marginal rate, 50% discount on assets held 12+ months	18% / 24% (residential property: 18% / 24%; other: 18% / 24% from 30 Oct 2024)
Dividend taxation	Marginal rate, fully imputed via franking credits (avoids double tax)	£500 allowance + 8.75% / 33.75% / 39.35% (rising to 10.75% / 35.75% / 41.35% from 6 April 2026)
Inheritance / estate	No federal inheritance tax (states abolished); Super death benefit tax 17% on non-dependants	IHT 40% above £325k NRB (+£175k RNRB on main home); 7-year gift rule
Property purchase	State stamp duty (e.g. NSW $700k → $26k)	SDLT (rest of UK), LBTT (Scotland), LTT (Wales) — banded; FHB relief up to £425k
Consumption tax	GST 10% (food/health/education exempt)	VAT 20% standard, 5% reduced, 0% on food/kids' clothes/books

Retirement: Super vs UK pensions

Australia's Super system is genuinely better-funded by employer mandate. The 12% Superannuation Guarantee is paid by the employer on top of base salary — so $80,000 base means $9,600 employer Super contribution that doesn't reduce take-home. UK auto-enrolment requires 8% combined (3% employer + 5% employee), with the employee portion deducted from gross salary.

In dollar terms: at $80k salary the AU employee accumulates 9,600.00/year mandatory Super (paid on top of salary). A UK employee at the £80k equivalent puts 4,000.00/year into their workplace pension (from gross salary) and the employer adds 2,400.00/year. Over 30 years the gap compounds to multiples.

No portability scheme. Unlike the trans-Tasman scheme between AU and NZ, there is no AU↔UK pension transfer. Since 2017, AU Super funds aren't QROPS-recognised, so transfers from UK pensions to AU Super are heavily restricted. Most movers leave their pension behind and let it grow — get specialist advice before any transfer.

If you're moving Australia → UK

Tax residency: AU residency typically ends on departure (subject to Commissioner's tests). UK residency triggers under the Statutory Residence Test — most commonly 183+ days in a UK tax year, or 91 days with a UK tie (work, family, accommodation, prior residence).
Double tax agreement: The Australia-UK DTA prevents double taxation. You generally pay tax where you reside, with credit for tax paid in the other country on the same income.
Super: Stays preserved in AU until preservation age (60 if born after 1 July 1964). No transfer to UK pension; consider whether to consolidate before leaving.
Higher take-home gap: Expect noticeably lower take-home in the UK on the same nominal salary, especially in the £100k–£125,140 PA-taper range where the marginal rate is 60%.
Property purchase: SDLT (or LBTT/LTT) replaces state stamp duty. UK FHB relief up to £425k purchase, partial up to £625k.
National Insurance contributions: Class 1 NI from week one of UK employment. After 35 qualifying years you're entitled to the new State Pension.

If you're moving UK → Australia

Tax residency: AU residency triggers via the "reside" test (commonly 183+ days), domicile test, or 183-day test. UK residency ends per the SRT — typically when you leave with full-time work overseas.
UK pension: Cannot generally be transferred to AU Super (QROPS restrictions since 2017). Consider keeping it in a SIPP or workplace scheme. Watch for the 25-year UK tax charge on transfers to non-QROPS schemes.
Higher take-home: AU take-home is typically higher on the same nominal salary at $80k–$135k due to flatter Stage 3 brackets and no NI equivalent.
Mandatory Super: Your AU employer must contribute 12% of ordinary time earnings (Superannuation Guarantee) on top of your salary — this is the core retirement-savings advantage of the AU system.
Property: State stamp duty applies on purchase; rates are higher than UK SDLT in most price ranges. First-home concessions vary by state (FHOG and stamp duty waivers in NSW/VIC up to ~$650k–$750k).
Capital gains: AU CGT 50% discount (12+ months) is a structural advantage over the UK 18%/24% flat rates for long-term investors.

AU Income Tax Calculator

Stage 3 brackets, dual-year toggle 2025-26 / 2026-27.

AU Take-Home Pay

Net pay including Medicare, HELP, and Super contributions.

Superannuation Calculator

SG 12% projections + concessional cap optimization.

UK Tax Tools (uktax.tools)

Sister site — UK income tax, NI, ISA, IHT, SDLT, and more.

Sources

Australian figures: ATO individual income tax rates, FY 2025-26 (Stage 3). UK figures: HMRC income tax rates and allowances, 2026-27. NI: HMRC NI rates. Superannuation Guarantee 12% effective 1 July 2025 (ATO).