Now that you have all the possible answers, and are unable to determine which is/are correct, please consult a tax or legal professional once you arrive. Maybe more than one. I’d also advise typing this question into AI - the answer you get from them may not be exactly accurate, but you will know it’s not coming from a know-it-all butthole with a fragile ego. 😉
More information needed: Has your immigration officer missed their meal before you arrived, or had a fight with their spouse, or experienced a rude traveler just before you? Or are they just happy to be here and enjoying life?
Good lord, you people (laughers) are stupid. I have read excerpts from the treaty itself as well as many other articles on the subject. That was about a year ago. I used chat gpt to confirm what I already knew. Had it said something else, I would have triple-checked another source. Don’t you have anything better to do than be snotty middle-schoolers?
IAW the tax treaty, US government-sourced pensions are exempt from being taxed by Thailand. Other pensions may or may not be taxed in amounts remitted to Thailand, only subject to the double taxation factor. If the tax in the US is only 10% and the tax in Thailand is 15, then the remitter will owe Thailand the difference (5%). If the tax in the US is equal to, or more than the tax in Thailand, the remitter will owe Thailand nothing. It is not just simple matter of whether it is taxed in the US or not.
Many ignore it, but that doesn’t mean there aren’t income tax rules/laws on the books for monies remitted to Thailand (not monies that remain in your home country).
The one that is outlined in the tax treaty between Thailand and your country of origin (if there is one). If you spend more than 180 days in Thailand, you are a tax resident.