Headline tax-burden delta + residency-test framing for relocating from FR to US. Numbers below come from our country tax calculators applied to common USD income levels.
Net at $100k in FR
$77,421
Net at $100k in US
$79,180
Move delta
+$1,759
US keeps more after tax
| Gross (USD) | FR effective | US effective | Delta |
|---|---|---|---|
| $25,000 | 5.2% | 11.2% | -$1,504 |
| $50,000 | 14.3% | 15.3% | -$487 |
| $75,000 | 19.5% | 17.9% | +$1,251 |
| $100,000 | 22.6% | 20.8% | +$1,759 |
| $150,000 | 28.7% | 24.1% | +$6,870 |
| $250,000 | 34.3% | 26.5% | +$19,508 |
| $500,000 | 39.7% | 31.8% | +$39,302 |
Leaving FR
Residency rule. Three alternative tests: home / principal place of stay (>183 days) / centre of economic interests.
Tax base. Worldwide income — residents are taxed on income earned anywhere.
Exit tax. Exit tax on substantial securities holdings (>50% of household financial wealth) for emigrants.
Arriving in US
Residency rule. Worldwide income for citizens + green-card holders regardless of where they live; substantial-presence test for non-citizens (183-day weighted formula).
Tax base. Worldwide income — residents are taxed on income earned anywhere.
Exit tax. IRC §877A expatriation tax for high-net-worth covered expatriates renouncing citizenship.
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