For years, "non-dom" was shorthand for a fairly simple pitch: relocate, keep foreign income and gains largely outside the local tax net, pay a fixed or reduced charge instead. Several of the regimes built around that pitch have been tightened, restructured, or replaced in ways that changed who actually benefits, and a comparison written even a few years ago is likely describing rules that no longer apply. The regimes haven't disappeared. They've become more selective about who they're actually good for.
The UK: From Indefinite Non-Dom Status to a Time-Limited Regime
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The old remittance-basis system, available for as long as someone maintained non-domiciled status, has been replaced with a residence-based regime offering relief on foreign income and gains only for a limited number of years after becoming UK tax resident, after which worldwide income and gains come into the UK tax net regardless of domicile.
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This favors people planning a defined-length stay, not permanent relocators. Someone moving to the UK for a fixed multi-year assignment or business project can still get meaningful relief during that window; someone hoping to base themselves in the UK indefinitely while keeping foreign wealth permanently shielded no longer has that option under the new structure.
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Inheritance tax exposure has also shifted, moving toward a residence-based test for what counts as within scope, rather than the domicile-based test that previously let long-term UK residents with non-UK domicile keep foreign assets outside the UK inheritance tax net far longer than the new rules generally allow.
Italy: The Flat Tax Regime, Narrowed But Still Live
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Italy's flat annual substitute tax on foreign income for new residents, a fixed yearly charge in place of ordinary progressive tax on foreign-source income, has had its charge increased for new entrants compared to the original scheme, reducing the relative advantage for people applying more recently versus those who locked in the original terms years earlier.
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It still functions well for a specific profile: individuals with substantial foreign passive income or gains relative to their cost of living in Italy, for whom even the increased flat charge is materially lower than ordinary Italian progressive rates would be on the same income.
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It works less well for people with modest foreign income, since the flat charge is fixed regardless of how much foreign income actually exists, someone with limited foreign-source income may find ordinary taxation cheaper than opting into the flat regime at all.
Greece and Cyprus: Still Comparatively Generous, But Narrower Than Their Reputation
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Greece's non-dom regime, built around a flat annual tax on foreign income for a defined number of years, has remained closer to its original form than the UK's, but carries a minimum investment requirement in Greece as a condition of eligibility, meaning it functions less as a pure tax-residency play and more as a package tied to actually placing capital in the country.
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Cyprus's non-dom regime, which exempts qualifying individuals from tax on dividends and interest for a defined period after becoming Cyprus tax resident, has stayed largely intact, making it comparatively attractive for people whose income is concentrated in passive investment returns rather than a mix of employment and business income.
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Both remain more favorable than the post-reform UK regime for long-term relocators, precisely because neither has moved to a hard time-limit on the core relief in the way the UK has, though both come with their own qualifying conditions around genuine residence and prior non-residence that need checking against the specific facts.
Who The Post-Reform Landscape Actually Favors
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Time-limited relocators, people on a fixed multi-year assignment, business build-out, or project, are generally better served by the UK's new structure than they would have been forced to plan around under the old one, since the relief is explicitly designed around a defined window rather than requiring an eventual, harder-to-predict exit from non-dom status.
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Passive-income-heavy individuals with substantial foreign wealth are generally better served by Italy's flat tax or Cyprus's dividend and interest exemption, where the benefit scales with the income being sheltered rather than being capped by a fixed relief period.
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People wanting a genuinely long-term, low-friction base with capital to deploy may still find Greece's combination of tax relief and investment-linked residence attractive, provided the required investment fits the individual's broader plans rather than being made solely to qualify for the tax treatment.
The Comparison That Actually Matters Now
The old approach, picking a non-dom jurisdiction based on a general reputation for favorable tax treatment, no longer holds up, because the regimes have diverged too much from each other in structure. The right comparison today runs through three specific questions: how long is the person actually planning to stay, what's the composition of their income between active and passive sources, and does the jurisdiction's remaining relief actually match that profile, or was it designed around a type of relocator the reforms have since moved away from.
