Simple question: what is the penalty for failure to do 90-day check-in on time (i.e., within 7 days after one's due date)?
TLDR : Answer Summary
The penalty for failing to file a 90-day check-in report in Thailand on time is typically a fine of 5,000 THB, which is commonly reduced to 2,000 THB. However, during specific amnesty periods, such as from August 1 to August 31, there may be no penalty for late filing of reports originally due between March 26 and July 31.