Hello, I'm an American retiree on an Elite visa living most of each year in Thailand as of this year (2023) and plan to continue doing so. I have no financial accounts in Thailand or anywhere outside the US. The only money I bring into Thailand is by way of (a) ATM withdrawals on a US bank account and (b) usage of a credit card issued by a US bank. Do (a) and (b) count as "remitted" money? My only income is in the US (just interest and retirement plan payouts, and I pay income tax on that in the US and in my state). Will I have to file tax returns in Thailand and/or pay tax in Thailand? Do I need to keep all my ATM withdrawal slips and credit card charge slips?
Also, what if my US-based bank account contains money earned previously and also current income (i.e., current-year interest and current-year retirement plan payouts)? Do I have to say "well, at the time of this-or-that ATM withdrawal, 90% of the dollars in the account were from prior to 2024, and 10% was paid in during 2024, so I'm declaring 10% of the ATM withdrawal to be 2024 taxable income remitted to Thailand"...?