[hopia]

Actually, I think Japan also technically taxes worldwide income of non-resident nationals. And even permanent residents, regardless of where they reside.

Moreover, some countries like Finland require you to pay taxes on worldwide income for a number of years after you're no longer a resident of the country and only then granting you tax freedom from income sourced outside of the country. And there's no amount of income you can exclude like the USA's $108k or whatever the figure is currently.