The Henley & Partners Index (HPI) has been compiled by Henley & Partners, a residence advisory firm, for 18 years. This index references data mainly from the International Air Transport Association (IATA). This year, it was found that Thai passport holders can enter 79 out of 227 countries/territories without requiring a visa or by obtaining a visa on arrival (VOA).

Within the ASEAN region, Thailand ranks 4th. Countries in ASEAN that rank higher than Thailand are Singapore (1st with access to 193 countries/territories), Malaysia (11th with 183 countries/territories), and Brunei (21st with 167 countries/territories). Six countries that rank lower than Thailand include Indonesia (74th with 73 countries/territories), the Philippines (79th with 66 countries/territories), Vietnam and Cambodia (both 87th with 55 countries/territories), and Myanmar (93rd with 47 countries/territories). For Timor-Leste, which recently joined ASEAN, it ranks 61st and can access 94 countries/territories.

The importance and prestige of the Thai passport have increased due to the policies introduced by Don Pramudwinai, Deputy Prime Minister and Minister of Foreign Affairs. The government led by Prayuth Chan-o-cha aims to increase the number of countries Thai passport holders can access without needing a visa or VOA as part of the national strategic plan, focusing on foreign affairs and enhancing Thailand's global status.

Furthermore, the Pheu Thai Party, led by the new government, also shares a similar policy, intending to allow Thais to travel worldwide without needing a visa.

However, with the increased prestige of the Thai passport and its acceptance by other countries, illegal work and overstaying could become potential issues. Therefore, enhancing the power of the Thai passport requires the cooperation of Thai citizens and relevant government agencies. This collaboration aims to address the issue of illegal activities abroad and support the aforementioned policies.