For most foreigners, the biggest challenges are not the beaches, food, weather, or cost of living. The hardest parts are usually legal, financial, healthcare, cultural, and long-term planning issues that become visible only after living in Thailand for several years.
1. Immigration And Visa Uncertainty
This is probably the single biggest issue.
Many foreigners arrive assuming they can simply stay indefinitely, then discover that Thailand is not an immigration country in the same way as the United States, Canada, Australia, or many European nations.
Common problems include:
- Annual visa renewals
- Financial requirements for retirement visas
- 90-day reporting requirements
- Changing immigration policies
- Increased enforcement against visa runs
- Difficulty obtaining permanent residency
- Difficulty obtaining citizenship
In 2026, Thai immigration authorities have been applying existing rules more strictly, particularly toward foreigners attempting to live permanently on tourist-style visas.