Is there a limit on the number of days I can spend in Thailand each year?

There is no official rule regarding the maximum number of days an individual can spend in Thailand per year. Instead, the decision is at the discretion of the immigration officer at the time of entry. Some users have pointed out issues with being denied entry after staying 90 days within a 6-month period or showing a pattern that suggests they are not typical tourists. Others note that it's essential to have the appropriate visa if planning to stay longer.