Rupiah Stability Comes with a Hot-Money Trap

The Indonesian rupiah has strengthened over the past two weeks, maintaining a relatively stable value around Rp17,700 per US dollar. However, this recovery should not be viewed as a cause for celebration. Recent balance-of-payments data from Indonesia reveals two significant risks to investors. The currency's apparent stability is built upon foundations that are less secure than they may seem.

One major issue is the country's substantial current-account deficit. In the second quarter of 2026 alone, the deficit reached an unprecedented US$12.5 billion, marking the largest quarterly shortfall in the nation's history. This deficit was primarily driven by a sharp increase in oil prices following the outbreak of war with Iran.

Indonesia's oil and gas trade deficit ballooned to US$10.2 billion during the same period, highlighting the economy's heavy reliance on imported energy. With the country importing around 1 million barrels of crude oil and refined products daily, any geopolitical event that causes a substantial rise in oil prices could pose a serious threat to the rupiah.

Meanwhile, the non-oil and gas trade surplus has also shown signs of weakening. While it stood at US$15.27 billion in the first quarter, it contracted to US$12.14 billion in the second quarter. This surplus has historically acted as a vital buffer, counterbalancing the energy-related deficit. However, this cushion is now thinning and could potentially vanish altogether.