Statement:
In United Kingdom, the tax system is simpler than in Japan

In the Tax Competitiveness Index rating United Kingdom holds position #22 2021 out of 37 and Japan is #24 out of 37 2021.
Position of United Kingdom is better than position of Japan.

Referencies:

  1. Tax Competitiveness Index 2021 by Tax Foundation
    The countries in the rating sorted by 'Overall Score' in descending order.
    Japan 'Overall Score' value is 61.5
    United Kingdom 'Overall Score' value is 61.8