Indonesia’s inflation rate is expected to accelerate in May, bringing price growth closer to the upper limit of the central bank’s target range and highlighting the growing economic impact of higher energy and transportation costs. According to a Reuters survey, annual inflation likely rose to 2.97% from previous levels, while core inflation is expected to edge higher as underlying price pressures continue to build.

The latest projections come at a critical time for Southeast Asia’s largest economy, as policymakers balance inflation control, currency stability, and economic growth amid heightened global uncertainty and energy market volatility.

Inflation Pressures Continue to Build

Economists surveyed expect Indonesia’s headline inflation rate to rise to 2.97% in May, moving closer to Bank Indonesia’s target ceiling of 3.5% for 2026 and 2027. Core inflation, which excludes more volatile components and serves as a measure of underlying price trends, is forecast to increase to 2.52% from 2.44% in April.

Several factors are contributing to the acceleration. Rising prices for non-subsidized fuel, higher airline ticket costs, and increasing cooking oil prices have placed upward pressure on household expenses. These developments reflect both domestic demand conditions and the broader impact of elevated global commodity prices.

Although inflation remains within the central bank’s target range, the pace of acceleration has strengthened expectations that policymakers will remain vigilant in the months ahead.

Central Bank Prioritizes Currency Stability

Bank Indonesia recently delivered a larger-than-expected 50-basis-point interest rate increase, underscoring concerns about inflation and currency stability. The move was aimed primarily at supporting the rupiah, which has faced pressure from global market volatility and shifting capital flows.

The central bank has emphasized its commitment to keeping inflation under control through next year while maintaining confidence in the domestic financial system. Higher interest rates may help limit imported inflation and support the currency, but they also increase borrowing costs for businesses and consumers.

This balancing act remains one of the key challenges facing policymakers as they seek to preserve economic growth while containing inflationary risks.

Trade Surplus Expected to Narrow Significantly

Indonesia’s external trade position is also showing signs of moderation. Economists forecast the country’s trade surplus narrowed to approximately $1.50 billion in April from $3.32 billion in March.

While exports are expected to remain healthy, rising by 8.8% year-over-year, imports are also projected to increase by 3.25%. Stronger import growth often reflects improving domestic demand and investment activity, but it can also reduce the size of trade surpluses that have provided support for the economy and currency in recent years.

A shrinking trade surplus may place additional focus on monetary policy and capital inflows as sources of financial stability.

Government Measures Help Cushion Energy Costs

One factor limiting inflationary pressures has been the Indonesian government’s decision to increase fuel subsidy spending following the escalation of geopolitical tensions in the Middle East. By absorbing part of the increase in global crude oil prices, authorities have helped shield consumers from the full impact of rising energy costs.

These subsidies have provided short-term relief for households and businesses, though they also increase fiscal costs and could become more challenging to maintain if energy prices remain elevated for an extended period.

Looking Ahead

Indonesia enters the second half of 2026 with a relatively healthy economic backdrop, but rising inflation and a narrowing trade surplus present new challenges. Investors will closely watch upcoming inflation releases, rupiah performance, and future central bank decisions for clues about the policy outlook. If global energy markets remain volatile and domestic demand stays resilient, inflation could move closer to the upper end of the target range, making monetary policy a central focus for markets in the months ahead