wrong. Eg, UK and Thailand have an agreement so there's no dual taxation. Many other nations do too. Thailand economy would collapse if they tried such tricks as all their foreign income would move to Philiphines or Vietnam.
Do a same day visa run to Malasia, from any of those destinations (including the islands) in the south , you'll see travel agents. For $50 return you'll be picked up first thing, taken to the border and back for late evening. Everyone in the minibus will be doing the same thing. A one day, cheap commitment. Not bad
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