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Ireland's headline corporation tax rate on trading income is 12.5% — and in 2017, 80% of all Irish corporation tax was paid by foreign multinationals, according to the Revenue Commissioners.

Wikipedia: Ireland has a 'low headline rate of corporation tax at 12.5% (for trading income)'; '80% of 2017 Irish corporate tax was paid by foreign multinationals'.

Scotland runs its own income tax on earnings with six bands — from a 19% starter rate to a 48% top rate — where the rest of the UK has three.

GOV.UK lists the 2026 to 2027 Scottish rates: starter 19% (£12,571–£16,537), basic 20% (to £29,526), intermediate 21% (to £43,662), higher 42% (to £75,000), advanced 45% (to £125,140) and top 48% above that.

Brazil is running two entire consumption-tax systems at once — the old five taxes and the new two — and will keep doing so until 2033, because untangling three tiers of government from the same tax base takes a seven-year transition.

Constitutional Amendment 132, promulgated on 20 December 2023 after some 30 years of discussion, folds the federal PIS, Cofins and IPI, the state ICMS and the municipal ISS into a dual VAT: the federal CBS plus the state-and-municipal IBS, with a Selective Tax alongside for goods considered harmful.

Dutch income tax comes in three 'boxes': Box 1 for work and home, Box 2 for substantial shareholdings (24.5% and 33%), and Box 3, which taxes savings and investments at 36% on a presumed return, not the actual income.

Wikipedia: 'income is divided into the following three categories, so called boxes'; Box 1 is progressive with two brackets, Box 2 is taxed at 24.5% and 33%, and Box 3 is taxed at 36% on a presumed return; before 2021 Box 3 worked more like a wealth tax, and after a court ruling the tax is now assessed on the actual distribution of assets.