Headline tax-burden delta + residency-test framing for relocating from SG to AU. Numbers below come from our country tax calculators applied to common USD income levels.
Net at $100k in SG
$92,862
Net at $100k in AU
$74,350
Move delta
-$18,512
SG keeps more after tax
| Gross (USD) | SG effective | AU effective | Delta |
|---|---|---|---|
| $25,000 | 0.8% | 9.7% | -$2,207 |
| $50,000 | 3.5% | 18.8% | -$7,670 |
| $75,000 | 5.4% | 23.2% | -$13,361 |
| $100,000 | 7.1% | 25.7% | -$18,512 |
| $150,000 | 10.3% | 30.9% | -$30,893 |
| $250,000 | 13.9% | 37.3% | -$58,492 |
| $500,000 | 18.2% | 42.2% | -$119,910 |
Leaving SG
Residency rule. Tax resident if physically present 183+ days in the calendar year; concessional 15% flat for non-residents in residence.
Tax base. Territorial — generally only domestic-source income is taxed.
Arriving in AU
Residency rule. 183-day rule + domicile test + superannuation test + ordinary-concepts test (one needs to fail to be non-resident).
Tax base. Worldwide income — residents are taxed on income earned anywhere.
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