Sao Tome and Principe, Uruguay, Argentina, Portugal: Tax Rates & Startup Funding Compared

Side-by-side breakdown of tax rates, startup funding, startup ecosystem, and 6 more dimensions for founders choosing where to incorporate in 2026.

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🇦🇷Argentina

Worldwide

🇵🇹Portugal

IFICI (Incentivo Fiscal para a Internacionalização de Competências e Investimento)

🇺🇾Uruguay

Impatriados - 11-year tax holiday on foreign capital income

🇸🇹Sao Tome and Principe

Worldwide

Dimension Profile

Shape = jurisdiction fingerprint. Gap = your decision.

Tax Regime Comparison5

🇦🇷ArgentinaWorldwide35%

🇵🇹PortugalIFICI (Incentivo Fiscal para a Internacionalização de Competências e Investimento)48%

🇺🇾UruguayImpatriados - 11-year tax holiday on foreign capital income36%

🇸🇹Sao Tome and PrincipeWorldwide25%

Tax system mismatchCritical

Argentina and Sao Tome and Principe tax all worldwide income once you become a tax resident (top rate: 35%). Portugal and Uruguay do not - only locally-sourced income is taxed. This is a fundamental structural difference that affects your total effective tax burden.

Exit tax applies in one jurisdictionCritical

Portugal has an exit tax. If you establish residency and later wish to leave, you may owe tax on unrealized gains or assets at departure. The other countries in this comparison do not have an exit tax.

23pp personal tax rate spreadReview

Both countries tax worldwide income, but the top personal income tax rates differ materially. Portugal: 48% vs Sao Tome and Principe: 25%. Both apply to all global earnings once you establish residency.

CFC rules apply in one jurisdictionReview

Argentina and Portugal and Uruguay have Controlled Foreign Corporation (CFC) rules. Owning a foreign company as a resident may trigger local tax on undistributed profits - even if the company pays no dividends. The other country in this comparison does not have CFC rules.

Special tax regime available in one jurisdictionNote

Portugal (IFICI (Incentivo Fiscal para a Internacionalização de Competências e Investimento)), Uruguay (Impatriados - 11-year tax holiday on foreign capital income) offer a qualifying program that may exempt foreign-source income from local tax for up to 10 years. This can significantly reduce your effective rate compared to the standard regime.

Not tax advice. Tax laws change frequently. Verify with a qualified professional before making residency decisions.

Field-by-Field Breakdown

Green = best value per row

Metric	🇦🇷Argentina58	🇵🇹Portugal76	🇺🇾Uruguay80	🇸🇹Sao Tome and Principe46
Dimension Scores
Corporate Tax	0	55	100	17
Funding	85	95	70	40
Visa	90	90	70	50
Residency	91	78	80	56
Tax Res.	55	45	70	55
Practical	81	91	78	55
Remote Work	79	69	94	52
Family	85	95	95	70
Ecosystem	80	90	55	40
Corporate Tax Details
Corporate Tax Rate	35%	21%	25%	25%
Capital Gains Tax	15%	28%	12%	0%
Tax Treaties	22	78	25	3
Territorial System	No	No	Yes	No
Funding Details
Active VCs	65	48	15	0
Government Grants	Yes	Yes	Yes	No
EU Funding Eligible	No	Yes	No	No
Visa Details
Has Startup Visa	Yes	Yes	No	No
Processing Time	60	90	21	42
Min Investment	$5K	$0	-	$90K
E-Residency	No	No	No	No
Digital Nomad Visa	Yes	Yes	Yes	No
Residency Details
Visa Programs Available	3	3	3	2
Citizenship Timeline	2	5	5	-
Dual Citizenship	Yes	Yes	Yes	Yes
Immigration Score	8	8	7	7
Tax Res. Details
Tax Residency Days	365	183	183	183
Personal Tax Top Rate	35	48	36	25
Territorial Taxation	No	No	No	No
Special Tax Regime	No	Yes	Yes	No
Exit Tax	No	Yes	No	No
Practical Details
Banking Difficulty	difficult	moderate	moderate	very_difficult
100% Foreign Ownership	Yes	Yes	Yes	Yes
Company Formation	1	3	14	30
Virtual Office OK	Yes	Yes	Yes	No
Remote Work Details
Nomad Visa	Yes	Yes	Yes	No
Tourist Work	gray_area	gray_area	tolerated	illegal
Tourist Visa Days	90	90	90	15
PE Risk Level	moderate	moderate	low	low
Days Before Tax Res.	365	183	183	183
Internet Speed	130	85	120	10
Coworking/mo	$150	$180	$140	-
Family Details
Safety Index	45	82	72	65
Int'l Schools	Yes	Yes	Yes	No
Homeschooling	legal_with_restrictions	legal_with_restrictions	legal_with_restrictions	-
Healthcare Quality	72	76	82	30
Cost of Living	50	68	40	28
Ecosystem Details
Unicorns	14	6	1	0
English Business Env	No	Yes	No	No
Talent Pool Quality	78	72	62	10

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