Why In-Country Visa Changes Are More Complex Than They Seem Thailand is a regional hub for global entrepreneurs, remote professionals, and investors. But navigating Thai visa rules—especially when seeking to change your visa type from inside the country—can be more complex than most expect. Many foreigners arrive on tourist or education visas and later decide to switch to a Non-Immigrant B (Business or Work), O (Dependent), or other long-stay visa categories. While in-count