What would you
actually pay?

Under Portugal NHR 2.0 (IFICI regime, Finance Law 2024), foreign-source self-employment income is taxed at a 20% flat rate (Art. 58-A CIRS). Without the SS opt-out (Portaria 1011/2023), self-employed individuals also owe ~21.4% social security, bringing the combined rate to ~38–41% before treaty considerations. With the opt-out (requires foreign-client invoicing structure and meeting conditions), TNTR ≈ 20%. UAE: Federal Decree-Law No. 47/2022 explicitly excludes natural persons from corporate tax; there is no personal income tax law. Non-GCC nationals owe 0% social security. TNTR ≈ 0% for most nationalities — except US citizens who still owe US federal tax (FEIE exclusion ~$130k in 2026; income above that taxed at US rates net of FTC). For a UK freelancer at $200k: UAE TNTR ≈ 0–2% (compliance costs); Portugal IFICI with SS opt-out ≈ 20%; Portugal without opt-out ≈ 38%. The gap is $36,000–$76,000 per year on that income level.

Paraguay (Law 6380/2019): strictly territorial — all foreign-source income is 0% regardless of remittance. If your $150k salary and $50k capital gains are foreign-sourced (clients/assets outside Paraguay), total Paraguayan tax = $0. Domestic-source income would be taxed at 10% IDU. Georgia: the optimal structure is a Virtual Zone IT company (1% on foreign IT revenue remitted) with individual dividends taxed at 5%. On $150k foreign IT revenue: ~1% = $1,500 corporate + 5% dividend = ~$7,500 on distribution = ~$9,000 total, or ~4.5% effective. HNWI status (GEL 100,000 annual flat, ~$37k) exempts qualifying individuals from Georgian personal tax on foreign income entirely — making Georgia competitive with Paraguay on rate. Capital gains: Georgia has no capital gains tax for individuals on foreign-source assets. Paraguay wins on simplicity; Georgia wins if you want EU proximity and a banking infrastructure.

For US citizens, the answer is more nuanced than for other nationalities because the US taxes citizens on worldwide income regardless of residency. The Foreign Tax Credit (FTC, §901 IRC) allows offsetting host-country taxes against US liability — so a 15% Malta Non-Dom remittance tax generates FTC that reduces US tax. A 0% UAE rate generates no FTC, leaving full US federal exposure (~23.8% on qualified dividends/LTCG for high earners). The most tax-efficient structure for a US citizen is typically: (1) Georgia Virtual Zone company (5% dividend generates FTC, partially offsets US liability) or (2) Portugal IFICI at 20% flat (generates substantial FTC, nearly eliminates US federal liability on that income). UAE's 0% rate is paradoxically worse for US citizens on investment income than a 15–20% host-country rate, because the FTC offset disappears. Crypto: Georgia and UAE are both 0% at individual level; US capital gains tax still applies.

For a UK-domiciled freelancer making a clean tax-residence exit (183+ days abroad, severing UK ties), the UK-UAE double tax treaty (signed 2016, in force 2017) uses the exemption method for UAE-source income — HMRC does not claw back tax on UAE earnings once genuine UAE tax residence is established. Result: UAE TNTR ≈ 0–2% (compliance, visa costs). Portugal IFICI with SS opt-out (Portaria 1011/2023): TNTR ≈ 20%. The UK-Portugal treaty (1968, as amended) uses the credit method — but since Portugal taxes at 20% and UK's additional-rate band is 45%, the treaty credit only partially offsets UK liability if you remain UK tax resident. With a clean UK exit, Portugal IFICI TNTR ≈ 20%. Verdict: UAE saves a UK freelancer ~$40,000/year more than Portugal IFICI at $200k income. Portugal wins on EU access, lifestyle, and path to citizenship (5 years). UAE wins purely on tax arithmetic.

Estonia's OÜ (private limited company) model under the Income Tax Act (§50) taxes retained earnings at 0% — corporate tax is only triggered on distribution (dividends). The distribution tax rate is 20% (or 14% for regular dividends paid for 3+ consecutive years). This creates a powerful tax-deferral mechanism: income earned and reinvested inside the OÜ grows tax-free. Only when you pay yourself dividends do you owe 20%. For a high-earner reinvesting most income, the effective rate on consumed income can be 14–20%; on retained/reinvested income, 0%. Estonia e-Residency allows non-residents to operate an OÜ, but personal tax residency must be established separately (183+ days in Estonia or another low-tax jurisdiction). The OÜ model is most powerful when combined with residency in a territorial or zero-tax country (UAE, Paraguay, Georgia) — the OÜ retains profits at 0%; the individual pays 0% personal tax in their residency country on dividends received.

Georgia Virtual Zone: the 1% rate applies to foreign-sourced IT revenue remitted to Georgia. Revenue kept offshore (in a foreign bank account) is not subject to the 1% until remitted. Individual dividends from the VZ company are 5% regardless of remittance. HNWI status (GEL 100,000 flat annual fee, ~$37k) exempts individuals from Georgian personal income tax on all foreign-source income — making remittance irrelevant for qualifying individuals. Malta Non-Dom: foreign income not remitted to Malta = 0% Maltese tax. Foreign income remitted = 15% minimum tax (flat-rate scheme, Income Tax Act Cap. 123). The minimum annual tax is €5,000. For a $200k earner remitting 50% ($100k), Maltese tax = $15,000 (15%) on remitted portion = 7.5% effective on total income. For a $200k earner remitting 100%, TNTR = 15%. The remittance-basis haircut in Visa Arithmetic is calculated using your stated remittance preference (partial 50%, full, or minimal) to produce a realistic effective rate.

At $200,000 self-employment income (foreign-sourced), non-US citizen, clean exit from home country:

Program	TNTR %	Annual Tax	Key caveat
UAE	0%	$0	Visa/setup costs ~$5–15k/yr
Paraguay	0%	$0	Must be foreign-sourced
Georgia HNWI	~18.5%	~$37k flat	GEL 100k flat fee
Georgia VZ	~5–6%	~$10–12k	IT services only; dividend extraction
Panama	~0–2%	~$0–4k	Territorial; compliance costs
Cyprus Non-Dom	~0%	~$0	Dividends/CG; salary taxed normally
Malta Non-Dom	~7.5–15%	~$15–30k	Depends on remittance ratio
Portugal IFICI	~20–38%	~$40–76k	SS opt-out critical
Estonia OÜ	0–20%	$0–40k	0% retained; 20% on distribution

Use the calculator above for your exact profile — home country, income type, and presence days shift these numbers significantly.