Hm, I'm wondering, what if you travel around and you never spend more than 186 days in any single country? Assuming you visit only the countries that use that same approach, does it mean that you never pay any taxes? Doesn't sound plausible to me...
What's not plausible about this? People are doing it. It's not even much of a "loophole" since ultimately, 90% of people prefer to settle down for residency somewhere rather than keep travelling for years. The tax man always goes after the average 90% of people first. But yeah, depending on your citizenship you can do this, known as PT: "permanent traveller", perpetual tourist, previous tax-payer etc...
Be sure to know the rules of the countries you visit and more importantly those of your citizenship country. If you're German, you cannot do this less-than-180-days-per-year operation if you hold "tangible economic interests in the country" such as: being employed there, having property interest there, or other assets such as company shares in or from within the country etc.
So again, not a workable "loophole" for the majority of people but a decent state of affairs for the vast minority of Tim Ferris-style indy web-biz travellers with no significant "financial" assets or interests inside the country of citizenship.
Yep, I know of quite a few people who are effectively doing that. If they have to have an address for anything, it's the hotel they stay in most regularly in Bangkok. Nice and central as a travel hub, and that Thai government doesn't want any money from you if you're not a resident of some sort which they aren't if they leave the country at least once every 90 days. Business is run out of one of the various offshore islands that doesn't want you're money unless you're living there, so all income if effectively tax free.
