Just read this article (sorry, it is in French). The author seems to think that when you re-entre the country after your 180 days, you will be asked to justify the 500k in your account again.
Is this your experience?
Do we really need to have bank statements with us every time we get back?
TLDR : Answer Summary
The discussion revolves around whether travelers need to present evidence of having 500,000 baht in their bank account upon re-entering Thailand after a 180-day DTV visa. Most commenters agree that while it is generally not required to show bank statements upon re-entry, the possibility remains that immigration authorities could change their procedures in the future and ask for such proof. It's recommended to be prepared with necessary documents but there is currently no consistent requirement for bank statements at re-entry.
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