Guernsey

A flat 20% income tax, no capital gains tax, no inheritance tax and, for now, no VAT or GST. High earners can cap their tax at £160,000 on foreign income or £320,000 on worldwide income, and a newcomer who buys an Open Market property paying £50,000+ of document duty can cap worldwide income tax at £60,000 a year for four years. The catches are expensive Open Market housing, an income tax that bites on everything below the cap, and a 3% GST planned for 2028 that is still being voted on.