You run the risk of being pulled, once a pattern of border hops appear, additionally Thailand is looking at implementing Electronic Travel Authorisations (ETA) next year, similar to Sin and Malaysia this will allow them to screen out folks gaming the system before they even arrive. Better to break the pattern by spending time between both countries, not a long flight, otherwise crack away until you get stopped….and have a plan B
except it’s not being driven by Thailand but the OECD and the US especially, they want to remove tax bolt holes like thailand - I would rather they follow Dubai, and tax consumption
If you are here more than 180 days in a calendar year you become tax resident, and remittances during that tax year are subject to Thai income tax effective 2024 so our first returns are due by end Mar 2025 - allowances are generous and if you from a country that has a DTA unlikely you will pay any tax here. If you can prove income is pre 2024 then large amounts for property or car purchase are also exempt. An accountant will handle tax return from B8k upwards.
Try opening an account in most western countries without residence, virtually impossible now, had to close my accounts in South Africa, Dubai and HK in last 5 years due to non residency, I keep my UK for now as I have a property there , still - that will be difficult when I sell up it’s a worldwide attempt to reduce money laundering.
every time you stay at a hotel or Thai address you update the system with the new location, hotel or landlord will do it for you if you have a long term residence, you need to update everytime you stay in a hotel domestically otherwise that will be the last address on the system and can give you grief when you renew your visa.
Beware , the gatekeepers in Room 103 now check the system to see if TM30 is up to date , I was there yesterday and a few folks got turned around - I do mine at the drive thru before u submit renewal saves losing my place in the Q
depends on your immigration office and their mood on the day, for several years Phuket never bothered with it , then last year turned up and there was a young chap sitting there with a screen checking as they screened our paperwork, and pointed out my last address was a hotel in Hua Hin - asked me to go next door to update my TM30 before they would process my retirement visa renewal - I am due back there today, and I got my TM30 updated yesterday in preparation. I have been at the same address for 5 years ………..