⚖️ Thai Laws Foreigners Should Know When Staying in Thailand
Last updated: 6 Jan 2026
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⚖️ Thai Laws Foreigners Should Know When Staying in Thailand
This article summarizes key Thai legal issues foreigners commonly face, with practical tips you can use immediately ✅
1) Visa Status, Stay Permissions, and Overstay (Overstay = Serious Risk)
Overstaying your permitted period of stay can result in a fine based on the number of days. It is commonly referenced as THB 500 per day (capped at THB 20,000), and longer overstays may lead to additional immigration consequences (such as removal and entry bans)
If you need more time, you should extend or change your stay status before your permission expires ⏳
✅ Tip: Set reminders at least 30 days before your visa or entry stamp expires.
2) ️ The 90-Day Report (For Stays Over 90 Days)
If you are legally allowed to stay in Thailand and remain in the country for more than 90 days, you generally must report your address to Immigration every 90 days
3) TM30: Address Notification for Foreigners (Usually the Host’s Duty)
TM30 is an immigration notification of a foreigner’s residence. In general, it is the responsibility of the property owner, house master, possessor, or accommodation manager to report when a foreigner stays at the premises
✅ Practical note: When renting a condo/house, confirm in writing whether the landlord/agent will handle TM30—this can affect visa extensions and immigration procedures.
4) Working in Thailand: “Work” Is Broader Than Just Having a Salary
A common misunderstanding is: “I’m not employed, so I’m not working.” In practice, authorities may consider many activities as “work,” such as helping in a friend’s shop, producing commercial content, working for a Thai company, or working beyond the permitted scope
Possible consequences can include fines and immigration action (including removal). Employers may also face liability.
✅ Recommendation: Before starting any activity that could be seen as “work,” confirm your visa type + work permit + permitted job scope and location.
5) Restricted Occupations (Certain Jobs Are Reserved for Thai Nationals)
Some occupations are restricted, or only permitted under strict conditions. One commonly cited example is tour guiding—foreigners working as guides can face enforcement action, fines, and removal
6) Cannabis in Thailand: “Available” Does Not Mean “Free for All”
Cannabis regulation in Thailand has changed rapidly in recent years. Enforcement and requirements may tighten or shift, including conditions related to medical use, prescriptions, and licensed distribution
This article summarizes key Thai legal issues foreigners commonly face, with practical tips you can use immediately ✅
1) Visa Status, Stay Permissions, and Overstay (Overstay = Serious Risk)
Overstaying your permitted period of stay can result in a fine based on the number of days. It is commonly referenced as THB 500 per day (capped at THB 20,000), and longer overstays may lead to additional immigration consequences (such as removal and entry bans)
If you need more time, you should extend or change your stay status before your permission expires ⏳
✅ Tip: Set reminders at least 30 days before your visa or entry stamp expires.
2) ️ The 90-Day Report (For Stays Over 90 Days)
If you are legally allowed to stay in Thailand and remain in the country for more than 90 days, you generally must report your address to Immigration every 90 days
3) TM30: Address Notification for Foreigners (Usually the Host’s Duty)
TM30 is an immigration notification of a foreigner’s residence. In general, it is the responsibility of the property owner, house master, possessor, or accommodation manager to report when a foreigner stays at the premises
✅ Practical note: When renting a condo/house, confirm in writing whether the landlord/agent will handle TM30—this can affect visa extensions and immigration procedures.
4) Working in Thailand: “Work” Is Broader Than Just Having a Salary
A common misunderstanding is: “I’m not employed, so I’m not working.” In practice, authorities may consider many activities as “work,” such as helping in a friend’s shop, producing commercial content, working for a Thai company, or working beyond the permitted scope
Possible consequences can include fines and immigration action (including removal). Employers may also face liability.
✅ Recommendation: Before starting any activity that could be seen as “work,” confirm your visa type + work permit + permitted job scope and location.
5) Restricted Occupations (Certain Jobs Are Reserved for Thai Nationals)
Some occupations are restricted, or only permitted under strict conditions. One commonly cited example is tour guiding—foreigners working as guides can face enforcement action, fines, and removal
6) Cannabis in Thailand: “Available” Does Not Mean “Free for All”
Cannabis regulation in Thailand has changed rapidly in recent years. Enforcement and requirements may tighten or shift, including conditions related to medical use, prescriptions, and licensed distribution
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