Observations from filing taxes in Thailand for the first time:
Preparing and filing taxes is easier than for my home country Switzerland, which already has a comparably tax payer friendly system. Total time spent was 1-2 hours using the online filing.
Admittedly, having my stepdaughter doing the entries was helpful.
Though entitled, I do not use transfers with DTA credits as long as I would have to rely on refunds.
Living from savings and THB 760k transfers from pension, my net Thai tax bill is less than THB 2k. Paying taxes in Thailand, I can partially recover withholding tax on my foreign investment income.
I love Thailand.
P.s. Thank you Mike.