How long does it typically take to receive a Confirmation of Entry (COE) after application?

The time frame to receive a response after applying for a Confirmation of Entry (COE) can vary. Responses generally include a pre-approval that may take about 3 hours, followed by the final certificate which can take anywhere from a day to as long as 10 days. Many applicants report receiving their COE within a week, especially those processing through the Thai Embassy in Washington D.C.