Thailand’s Supreme Court on Tuesday ruled that former prime minister Thaksin Shinawatra must serve a one-year prison term for earlier convictions on graft and abuse-of-power charges, finding that officials mishandled his transfer to a hospital after his return to the country in 2023.
The decision followed an investigation into whether the move to place Thaksin in an upscale hospital suite—rather than a prison—complied with legal procedures. The ruling comes against the backdrop of a dramatic political comeback that saw the long-exiled billionaire return to Bangkok as his Pheu Thai party re-entered government in 2023, only to see that influence erode amid legal and political setbacks.
Court actions since Thaksin’s return have repeatedly reshaped Thailand’s political landscape. Last month, a court that has often ruled against him and his political network acquitted him of a royal-defamation charge, an offense that could have carried up to 15 years in prison. But Tuesday’s Supreme Court finding that his hospital transfer did not follow proper procedures effectively requires him to begin serving the remaining sentence tied to earlier graft and abuse-of-power convictions.
Thaksin’s political fortunes have been volatile for nearly two decades. He built a vast political machine after entering politics in the 1990s, using his telecommunications fortune to propel the Thai Rak Thai party to landslide victories in 2001 and 2005. His populist policies—including universal health care and village development funds—won strong support among rural and lower-income voters and made him the country’s longest-serving democratically elected leader at the time.
His tenure also produced deep antagonism among conservative elements of Thai society: the military, the monarchy’s staunch defenders and parts of the urban elite. Critics accused him of blurring business and state interests, of running government with a CEO’s authority, and of intolerance toward media criticism. His administration was also blamed for fueling a separatist insurgency in the Muslim-majority south and for a controversial drug war during which human-rights groups have alleged thousands of extrajudicial killings.
Those tensions culminated in a military coup in 2006 that ousted Thaksin while he was abroad. He briefly returned in 2008 to face charges, then fled and remained in self-imposed exile for more than a decade. His sister, Yingluck Shinawatra, later led the Pheu Thai party to victory and became prime minister in 2011; her government’s proposed amnesty for Thaksin helped spark protests and a 2014 military coup that sent Yingluck into exile.
While abroad, Thaksin maintained influence over Thai politics. Parties aligned with his movement continued to win elections but were frequently toppled by court rulings, parliamentary maneuvers and mass protests. His supporters, known as the Red Shirts, clashed with royalist Yellow Shirt opponents in cycles of violent street confrontations that deepened national polarization.
Thaksin’s return to Thailand in August 2023 came after a political realignment that sidelined the progressive Move Forward Party and enabled a Pheu Thai-led coalition to form a government. He arrived on the same day the new coalition took office and was immediately sentenced in a corruption case to an eight-year prison term. Authorities transferred him to a high-end hospital room citing ill health; the sentence was later reduced by King Maha Vajiralongkorn to one year, and Thaksin was released on parole after about six months in February 2024. Critics said the medical treatment and early release amounted to special privileges.
Since his return and release from the hospital, Thaksin has kept a high public profile, traveling and making political comments. He has been widely regarded as the de facto leader behind Pheu Thai, particularly when his daughter, Paetongtarn Shinawatra, became prime minister last year. Paetongtarn was removed from office last month after a court found her guilty of an ethics violation connected to a politically sensitive phone call with Cambodia’s Senate president. Parliament this month confirmed a rival party’s candidate as prime minister, ending Pheu Thai’s two-year run in government and significantly diminishing the Shinawatra family’s formal hold on power.
Thaksin’s business career preceded his political one. Born in Chiang Mai in 1949 to a mercantile family, he served as a police colonel before building a telecommunications empire beginning with Advanced Info Systems, an early mobile phone provider. While in exile he obtained a Montenegrin passport through investment, spent much time in Dubai and engaged in international business dealings, including the sale of the Manchester City football club and investments in mining in Africa.
Legal rulings and political maneuvers have continued to shape Thailand’s governance. Supporters see Thaksin as a populist who expanded services for the poor; opponents view him as a polarizing figure whose return threatens established institutions. The Supreme Court’s order that he serve a one-year sentence underscores the unresolved tensions between judicial authority, royal prerogatives and political maneuvering in Bangkok.
The court’s decision could trigger further legal and political shifts in the coming days and weeks. Political analysts say how authorities implement the ruling—and whether additional charges or appeals arise—will influence the stability of Thailand’s current political realignment and the future role of the Shinawatra family in Thai politics.