How early can I renew my retirement visa in Thailand for another 12 months?

If you have a retirement visa in Thailand that expires in September, you can typically apply for an extension of stay 30 to 45 days prior to the expiration date. While many offices allow renewals 30 days in advance, places like Bangkok, Chiang Mai, and Phuket permit applications up to 45 days early. It is advisable to handle the renewal as early as possible to avoid any potential issues.