Statement:
In South Korea, the tax system is more complicated than in United Kingdom

In the Tax Competitiveness Index rating South Korea holds position #26 2021 out of 37 and United Kingdom is #22 out of 37 2021.
Position of South Korea is worse than position of United Kingdom.

Referencies:

  1. Tax Competitiveness Index 2021 by Tax Foundation
    The countries in the rating sorted by 'Overall Score' in descending order.
    South Korea 'Overall Score' value is 60.6
    United Kingdom 'Overall Score' value is 61.8