The embassy usually don't call for interview unless something suspicious about your application. If that's the case, your application will most likely not successful.
I got my DTV from Singapore Thai Embassy in Feb 2025. No problem.
I presented my income tax return, employment letter, bank statements showing "Salary" from your company, and balance of not less than SGD 20K.
Initially I show my Thai bank statement. But they requested me to show bank statements that show salary income. If your salary is drawn in Singapore, your bank statement should have shown that.
I submitted my application on 9Jan . Approved on 5 Feb. In between they requested me to explain why I have a Thai bank account. After my explanation email, the visa was approved in 3 days. Hope this helps.
Application is done online. Doesn't matter where you are now as long as you have a permanent residential address in the country of application n fulfill the conditions.
I was in Thailand n apply thru Singapore Thai embassy, providing all my documents, appt letter from Singapore co., bank statement.