I only went to get a TIN with a yearly bank statement as they had earlier requested and somehow ended up filing a return!The tax officer started to fill it in without me even realising what was happening or asking any questions.Luckily I had a copy of my wife's and her son's id cards to show her so I got all my allowances and deductions....
totalling 590,000 baht. I thought my liability was 0 after allowing for the uk thai dta but she wouldn't entertain that or appear to know what I was talking about so I never even mentioned pre 2024 money as I had no supporting docs.Because my liability came to very little and to avoid a return trip and the hassle of providing docs. I just paid up.The whole experience was bizaare.Next year I won't exceed 590,000 baht in remittances which is eas[ly arranged to ensure no liability.