According to the World Population Map, the 10 highest taxed countries are:

Top 10 Countries with the Highest Personal Income Tax Rates – Trading Economics 2021:

Ivory Coast – 60%
Finland – 56.95%
Japan – 55.97%
Denmark – 55.90%
Austria – 55.00%
Sweden – 52.90%
Aruba – 52.00%
Belgium – 50.00% (tie)
Israel – 50.00% (tie)
Slovenia – 50.00% (tie)

Top 11 Countries with the Highest Corporate Taxes – Trading Economics 2021:
Puerto Rico – 37.5%
Suriname – 36.0%
Chad – 35.0% (tie)
Equatorial Guinea – 35.0% (tie)
Guinea – 35.0% (tie)
Iraq – 35.0% (tie)
Malta – 35.0% (tie)
Sudan – 35.0% (tie)
Zambia – 35.0% (tie)
Brazil – 34.0% (tie)

Top 11 Countries with the Highest Sales Taxes – Trading Economics 2021:

Bhutan – 50%
Hungary – 27%
Croatia – 25% (tie)
Denmark – 25% (tie)
Norway – 25% (tie)
Sweden – 25% (tie)
Finland – 24% (tie)
Greece – 24% (tie)
Iceland – 23% (tie)
Poland – 23% (tie)
Portugal – 23% (tie)

According to the Tax Foundation, the lowest corporate tax rates around the world are:

Lowest Statutory Corporate Income Tax Rates in the World, 2022
(Excluding Jurisdictions with a Corporate Income Tax Rate of Zero Percent)

Country Continent Tax Rate
Barbados North America 5.5%
Turkmenistan Asia 8%
Hungary Europe 9%
Andorra Europe 10%
Bosnia Europe 10%
Bulgaria Europe 10%
Kosovo Europe 10%
Kyrgyzstan Asia 10%
Paraguay South America 10%
Qatar Asia 10%
Macedonia Europe 10%
Timor-Leste Oceania 10%
China, Macao Asia 12%
Moldova Europe 12%
Cyprus Europe 12.5%
Gibraltar Europe 12.5%
Ireland Europe 12.5%
Liechtenstein Europe 12.5%
Albania Europe 15%
Georgia Asia 15%

Sources: OECD, “Table II.1. Statutory corporate income tax rate”; PwC, “Worldwide Tax Summaries – Corporate Taxes”; Bloomberg Tax, “Country Guides – Corporate Tax Rates”; and researched individually, see Tax Foundation, “worldwide-corporate-tax-rates.”

Of the 225 jurisdictions surveyed, 16 currently do not impose a general corporate income tax. Except for the United Arab Emirates, all these jurisdictions are small, island nations. A handful, such as the Cayman Islands and Bermuda, are well known for their lack of corporate taxes.