Head to head

London vs Paris.

🇬🇧 United Kingdom against 🇫🇷 France, on tax, residence, cost, and the life. Same model, same year, no brochure.

LondonParis
Effective tax at $300K37%39%
Effective tax at $1M43%45%
Effective tax at $3M44%47%
Kept at $1M$574K$546K
Capital gains24%30%
Cost index (Zurich 100)9695
Safety7/106/10
Schools10/108/10
Sun hours1,6301,660
Supercar street index#11#12
Routes inFounder & talentGolden visa, Founder & talent
Net millionaire inflow 2025 (country, Henley)−16,500−800
Flight LondonHome1.5
Flight New York7.88.1

Simplified marginal model, indicative 2026 brackets, non-US single filer, no social contributions, deductions, wealth taxes, or treaties.

Verdicts

Who should pick which.

For an executive on salary

London keeps more of a $1M salary, $29K a year on this model. Paris answers with the life itself.

For a founder with an exit

Capital gains: London 24%, Paris 30%. The order of operations, move then sell or sell then move, decides more than the rate. Neither city taxes wealth as such.

For a family

London leads on schools and safety, Paris on a lower cost and sun.

The Dossier: London, Paris, and the third you have not considered.Your top 3 modeled on your income, exit, passports, and family. 10 chapters, about 40 pages, as a PDF within 24 hours. $249, refunded within 7 days if it does not change how you think.
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Tax figures use a simplified marginal model with indicative 2026 brackets for a non-US single filer, ignore social contributions, most deductions, wealth taxes, and treaties, and are not advice. Residence rules change often. Verify before acting.