On November 4, Singapore proposed major amendments to its Transboundary Haze Pollution Act, including raising the maximum daily fine for causing or contributing to cross-border haze pollution from about S$78,000 to S$1 million.

According to Sina Finance, the proposed measures would also allow arrests in Singapore, trials in absentia, and restrictions on companies’ business activities and financing. The revised law could cover conduct posing a pollution risk even before smoke from land or forest fires reaches Singapore, and authorities could impose restrictions and fines on parties doing business with companies or individuals suspected of causing fires.

Sustainability and Environment Minister Grace Fu said the changes would expand investigative and enforcement powers. Simon Tay, chairman of the Singapore Institute of International Affairs, said the measures could constrain companies beyond economic penalties by disrupting their business activities and access to financing. Fu said Singapore needed better ways to obtain and verify information, trace complex corporate relationships, and penalize offenders, even when criminal prosecution is difficult.

The proposal follows severe Indonesian wildfires in 2026, fueled by El Niño conditions and prolonged drought. Haze blanketed Singapore for weeks and also affected Malaysia and the Philippines. Indonesian monitoring data showed that hotspots in September and October reached their highest levels since 2015.

Singapore’s National Environment Agency has sent letters to several Indonesian companies and requested operational and supply-chain information from 10 palm oil and forestry companies registered in Singapore, including Wilmar International, Golden Agri-Resources, and First Resources. Singapore passed the law in 2014, but investigations into some cases related to the 2015 haze remain unfinished because of difficulties obtaining key evidence from Indonesia. Fu said satellite imagery and modeling have improved haze tracing, though identifying those responsible still requires official information from Indonesia. Singapore will continue coordinating with Indonesia and use ASEAN mechanisms to pursue a regional zero-haze target by 2030.