🇬🇧 United Kingdom vs 🇯🇵 Japan

Tax residency, treaties and PE risk compared.

Dimension🇬🇧 United Kingdom🇯🇵 Japan
Residency ruleStatutory Residence Test (SRT) — ties + daysJusho (domicile) + 1-year presence
Day threshold183 days365 days
Warning bandfrom 90dfrom 183d
Tax range20–45%5–45% + 10% local
Tax treaties130+85+
PE riskMediumMedium
Digital nomad visaNoYes
Best forReturning expats using split-year treatmentNon-permanent residents (first 5 of 10 years) shielding foreign income
Common pitfallEven 16 days can trigger residency if you have 4+ ties to the UK.Non-permanent resident status ends after 5 years — then worldwide tax kicks in.

Verdict

United Kingdom and Japan carry similar residency risk on day-count alone — the deciding factor is usually treaty coverage (130 vs 85) and your specific income mix.

Deep dive

🇬🇧 United Kingdom residency rules →

Deep dive

🇯🇵 Japan residency rules →

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