@Dana ******
Here's the english wording from the current police order
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about extensions based on being over 50 (retirement) and banked money
(4) On the filing date, the applicant must have funds deposited in a bank in Thailand of no less than Baht 800,000 for the past three months.
For the first year only, the applicant must have proof of a deposit account in which said amount of funds has been maintained for no less than 60 days prior to the filing date.