The Indonesia Financial Services Authority has issued a new regulation amending its 2023 rules on carbon trading through a carbon exchange. The update aligns the exchange framework with the revised national carbon economic value regime under Presidential Regulation No. 110 of 2025 and changes the trading rules in several core areas, including eligible carbon units, registry requirements, foreign carbon units, reporting and consumer protection. Under the new rules, carbon units traded through a carbon exchange operator must be recorded in the Carbon Unit Registry System, or SRUK, which replaces the National Registry System for Climate Change Control. The regulation also broadens the scope of carbon units, permits trading in foreign carbon units that are not recorded in SRUK, and requires carbon exchange operators to submit certain reports to the relevant ministry. Consumer protection principles under OJK rules for the financial services sector will apply to all parties involved in carbon trading through the exchange. Until SRUK becomes operational, trading may continue for carbon units recorded in an electronic system at the relevant ministry for up to three months after the regulation's promulgation. The regulation took effect on promulgation.