London vs Luxembourg City for a high earner: tax, residence, cost, and life compared

	London	Luxembourg City
Effective tax at $300K	37%	37%
Effective tax at $1M	43%	43%
Effective tax at $3M	44%	44%
Kept at $1M	$574K	$573K
Capital gains	24%	21%
Cost index (Zurich 100)	96	88
Safety	7/10	9/10
Schools	10/10	9/10
Sun hours	1,630	1,600
Supercar street index	#11	#49
Routes in	Founder & talent	Golden visa, Founder & talent
Net millionaire inflow 2025 (country, Henley)	−16,500	n/a
Flight London	Home	1.7
Flight New York	7.8	8.4

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, $1K a year on this model. Luxembourg City answers with safety.

For a founder with an exit

Capital gains: London 24%, Luxembourg City 21%. 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 sun, Luxembourg City on safety and a lower cost.

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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.