Is the renewal process for the Thailand retirement visa the same each year?

The process for renewing a retirement visa in Thailand is essentially an annual application for an 'extension of stay' rather than a renewal of the visa itself. Each year, applicants must submit similar paperwork, but it's important to check with the local immigration office for the most current requirements as procedures can vary slightly by location and may change from year to year. Generally, people are advised to begin the process well before the visa's expiration date to account for any unexpected changes.