This seems an appropriate thread to raise discussion on the following scenario.
Looking in to the future, say one is a Thai tax resident for 2024 and 2025 but remit none of the income made overseas. In 2026 go traveling and only stay in Thailand for 5 months (under 180 days) and in that year remit the overseas income for 2024 and 2025, no return needed in 2026 as not tax resident for that year. Then in 2027 stay more than 180 days and become tax resident again, the unknown (to me) is whether there would there be a liability for past income remitted into the country that was made when one was a tax resident.
I raise this because all the information I've found so far discusses income made and remitted when resident, but not income made when resident but remitted when non-resident.
Maybe one to watch unfold in the future...