Most of the gap is opened by United States's Foreign Earned Income Exclusion regime, which displaces the standard schedule. Both countries are indicated in USD at the displayed FX.
| Personal income tax npr · 0% flat | — |
| Social security 15.0% employee · uncapped | $15,000 |
| Total deductions | $15,000 |
| Gross income | $100,000 |
| Net take-home | $85,000 |
| Personal income tax feie · 0% flat | — |
| Social security 22.9% employee · capped | $7,650 |
| Total deductions | $7,650 |
| Gross income | $100,000 |
| Net take-home | $92,350 |
| Instrument | Japan · USD | United States · USD | Δ (US − JP) |
|---|---|---|---|
I. Personal income tax | |||
Personal income tax JPnpr · 0% flatUSfeie · 0% flat | — | — | — |
| subtotal · personal income tax | $0 | $0 | +$0 |
II. Mandatory social security & health | |||
~15% total (health + pension + employment). JP15.0% · uncappedUS7.6% · capped $184,500 | $15,000 | $7,650 | −$7,350 |
SECA: both employer + employee portions paid by SE. JP—US15.3% · capped $184,500 | — | — | — |
| subtotal · mandatory social security & health | $15,000 | $7,650 | −$7,350 |
| Total deductions | $15,000 | $7,650 | −$7,350 |
| Effective rate | 15.0% | 7.6% | -7.4 pp |
| Gross income | $100,000 | $100,000 | — |
| Net take-home | $85,000 | $92,350 | +$7,350 |
Table 1 · Statutory deductions, single-filer remote worker, FY2026 indicative. All amounts in USD. n/a where instrument does not apply. | |||
| PPP basis · NYC = 100 | Japan | United States | Δ |
|---|---|---|---|
Cost-of-living index Indicative · placeholder until COL table ships | 70.0 | 100.0 | +30.0 pts |
Nominal net (annual) From the engine — exact | $85,000 | $92,350 | +$7,350 |
| Real net · Japan basket | $85,000 | $64,645 | −$20,355 |
Every line above can be traced to a primary instrument. We publish the model; you may toggle its parameters.
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