[fyfy18]

As a US citizen it's somewhat tricky as you are taxed on your worldwide income, but the easiest way is probably to become a tax resident in a country with a low tax rate. Even in the UK, as a contractor/freelancer it's fairly simple to pay single digit percent effective taxes on incomes of £100k+. And that's without even delving into what could be considered a 'tax avoidance' scheme.

[C1sc0cat]

Not shure single digit effective is possible nowadays even outside IR35 - and HMRC has unliterally ruled that some professions are in side IR35 eg all it/developer contractors.

Actors, film / tv professionals and lawyers etc are for the large part still treated as "self employed"