The correct answer is: A. Australia
The top marginal tax rate in Australia is 45%, which is the second highest in the OECD after Denmark. This means that for every dollar earned over A$180,000, an Australian resident pays 45 cents in tax.
The other options are incorrect because they have a lower top marginal tax rate than Australia. For example, the top marginal tax rate in the Netherlands is 49.5%, but this only applies to income over â¬200,000. The top marginal tax rate in Argentina is 35%, the top marginal tax rate in Ireland is 40%, and the top marginal tax rate in South Korea is 42%.
It is important to note that the top marginal tax rate is not the only factor to consider when comparing tax rates between countries. Other factors, such as the number of tax brackets and the standard deduction, can also have a significant impact on the amount of tax that an individual pays.