This Week in the Indonesian Economy (4-10 Sep 2026)

Indonesia’s economic week was framed by two natural events that tested the resilience of state institutions and private enterprise alike, even as fiscal policymakers pressed ahead with an ambitious agenda of financial inclusion, energy transition and structural reform. The eruption of Mount Anak Krakatau, which began its most intense phase on 4 September, disrupted nearly 3,000 flights and affected an estimated 341,000 passengers, forcing the closure of eight airports including Jakarta’s Soekarno-Hatta hub for roughly 46.5 hours. By Tuesday, most airports including Halim Perdanakusuma and Bandung’s Husein Sastranegara had reopened following negative ash tests, though Wunopito Airport in East Nusa Tenggara remained shuttered owing to a separate eruption at Mount Lewotolok. The Indonesia National Air Carriers Association estimated airline losses of up to Rp19 billion per day, while PT Kereta Api Indonesia stepped in with additional long-distance trains from Solo, Yogyakarta and Surabaya to absorb stranded travellers. Tourism Minister Widiyanti Putri Wardhana struck an optimistic note, pointing to a 5.23 per cent rise in foreign arrivals between January and July, but the Kadin Indonesia Institute warned that repeated disruptions, compounded by widespread forest fires that Copernicus data suggest have pushed Indonesia’s wildfire emissions to the world’s highest levels, demand a National Business Continuity Framework treating disaster resilience as a competitiveness issue rather than an afterthought.

On the fiscal front, Finance Minister Purbaya Yudhi Sadewa marked roughly a year in office by defending his brand of public optimism, invoking the “self-fulfilling prophecy” theory from his own 1993 academic work to argue that confidence itself drives growth. He reported the budget deficit at a controlled 0.91 per cent of GDP as of July, tax revenue growth of 23.7 per cent without new levies, and a Consumer Confidence Index that climbed to 118.5 in August from 116.8 in July. Yet economists including CORE Indonesia’s Yusuf Rendy Manilet cautioned that this rebound reflects a recovery from a low base rather than a durable turnaround, with Kadin similarly noting that improved sentiment has not yet translated into stronger purchasing power. Purbaya also confirmed that global oil prices breaching US$100 a barrel, driven by the escalating US-Iran conflict and Houthi attacks in the Bab al-Mandab Strait and on Saudi energy infrastructure, would not derail the state budget, as the average price paid by Indonesia remains below the US$90 threshold assumed in planning. The 2027 draft budget deficit was set at 2.4 per cent of GDP, with spending raised by Rp9.1 trillion to Rp4,106.3 trillion, according to DBS Group Research’s Radhika Rao, who characterised the figure as a sign of fiscal consolidation discipline.

The government’s flagship financial inclusion drive, the mass bank account opening programme targeting more than 200 million citizens with an initial Rp50,000 deposit, dominated headlines throughout the week, though its budget remained a moving target. Coordinating Minister Airlangga Hartarto initially floated Rp11 trillion, but Purbaya repeatedly stressed the figure was not yet finalised and unlikely to reach that ceiling, while confirming Bank Syariah Indonesia would service Aceh and Bank Rakyat Indonesia the rest of the country, a scheme detailed further by Danantara chief Rosan Roeslani. Economists Fakhrul Fulvian of Trimegah Sekuritas warned that success must be measured by active usage rather than mere account numbers if the initiative is to genuinely strengthen monetary sovereignty in the digital era.

Energy policy saw significant momentum. Indonesia’s B50 biodiesel mandate, the world’s first 50 per cent palm oil blend, reached 94 per cent of the roughly 6,050 participating Pertamina stations, with the Ministry of Energy and Mineral Resources projecting Rp170 trillion in foreign exchange savings from halted diesel imports and job creation for 2.1 million people. The achievement has drawn interest from Japan, Malaysia and European nations seeking to replicate Indonesia’s technical and regulatory framework, even as Commission XII of the DPR pressed Pertamina Patra Niaga to guard against logistical bottlenecks and unified FAME pricing disputes. Meanwhile, the long-running debate over the Oil and Gas Bill intensified, with the House designating the revision a parliamentary initiative aimed at concluding discussions by October. The central sticking point remains where a proposed Special Business Entity (BUK Migas) replacing SKK Migas should sit: under the President, the Ministry of Energy, or Pertamina, a decision with far-reaching implications for upstream investment governance.

Mining and downstreaming continued to generate strong non-tax revenue despite falling volumes, with nickel PNBP reaching Rp21 trillion by late August, roughly double the previous year, and total mineral and coal PNBP hitting Rp108 trillion. Vale Indonesia advanced its Rp19.29 trillion 2027 capex plan and confirmed its Morowali and Pomalaa HPAL plants remain on track for late-2026 operation, while Antam accelerated permitting for its Buli HPAL project in East Halmahera. Coal production stood at 423.71 million tonnes through July, below 2025 levels as the government pursues an “optimum production” strategy, though PTBA still targets 50 million tonnes for the year on the back of a 218 per cent surge in net profit. The newly inaugurated Sarjito, heading the OJK’s Mineral and Strategic Commodities Exchange (BMKS), set out ambitions to transform Indonesia from a price-taker into a price-maker for nickel, coal and other strategic commodities when the new Icomex exchange launches on 1 January 2027.

Infrastructure and connectivity projects advanced on multiple fronts. Jakarta’s LRT Phase 1B between Manggarai and Velodrome began trial operations, alongside successful test runs on the Kelapa Gading-Manggarai extension recording a 28-minute journey time, while Governor Pramono Anung reaffirmed his five-year target to bury 6,500 kilometres of the capital’s tangled overhead cables through the SJUT programme, backed by an initial Rp90 billion allocation. Disaster recovery efforts continued in North Sumatra, where Tito Karnavian’s Post-Disaster Rehabilitation and Reconstruction Task Force pushed for accelerated sabo dam and permanent housing construction in Central Tapanuli, and in East Manggarai, where earthquake damage left numerous government offices and health facilities in the “red zone.”

Looking ahead, Indonesia enters the final quarter of 2026 navigating a delicate balance: robust commodity-linked revenue and an ambitious biofuel and financial inclusion agenda set against volcanic disruption, forest fires, and a combustible Middle East that keeps oil prices and shipping risk elevated. With the 2027 budget taking shape, the Oil and Gas Bill nearing a decisive vote, and consumer confidence still fragile, the coming months will test whether Purbaya’s self-fulfilling optimism can be matched by tangible improvements in purchasing power, productivity, and the structural reforms needed to escape the middle-income trap that the Asian Development Bank Institute warns remains firmly within reach only through sustained institutional change.