Hi there just going through the process of applying for a STV visa ( looking to spend 4.5 months over there). If I go to immigration over there will they expect me to have insurance for the full 3 month extension or just for the time I'm in Thailand. Thanks Philip
TLDR : Answer Summary
If you're applying for an STV visa in Thailand, you need health insurance that covers the entire duration of your stay in the country. Although you initially enter on a three-month STV visa, and can extend it for another three months, the insurance must be valid for the full length of your extension. It’s important to have insurance that covers at least 90 days when applying for a visa extension, as any failure to meet this requirement could impact the duration stamped on your extension.