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Thailand

Kingdom of Thailand

Civil lawConstitutional monarchyReviewed· 2026-08-03
Capital
Bangkok
Population
71,700,000
Languages
Thai
Currency
THB

Thailand · Government

Government and administration in Thailand

How the executive, legislature and administrative state are organised, and which body is responsible for what.

The three branches

Head of state — King
Constitutional monarch; the office carries substantial prestige and lèse-majesté protection.
Executive — Prime Minister and Cabinet
Prime Minister selected by Parliament.
Legislative — National Assembly
House of Representatives (500) and Senate (200).
Judiciary — Constitutional, ordinary and administrative courts
Three separate judicial hierarchies.
Independent organs — Election Commission, Ombudsman, NACC, State Audit Office
Constitutional bodies with wide powers over officeholders.

How legislation is made

Bills pass three readings in the House of Representatives and are then considered by the Senate, which may delay. Money bills require Cabinet endorsement. Before royal assent, a bill may be referred to the Constitutional Court for pre-enactment review. The King signs; if assent is withheld, Parliament may reaffirm the bill by a two-thirds majority after 90 days. Constitutional amendment requires specified majorities in a joint sitting including Senate support, and referendums for some chapters.

Enforcement institutions

Royal Thai Police
National force under the Prime Minister's Office.
Office of the Attorney General
Public prosecution service.
National Anti-Corruption Commission
Constitutional body investigating officeholders.
Revenue Department
Income tax and VAT.
Department of Business Development
Company registration under the Civil and Commercial Code.
Securities and Exchange Commission
Capital markets regulation.

Government bodies and regulators

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