Bank Indonesia raised its key rate by 50bp to 5.25% to support the Indonesian rupiah during higher global volatility linked to the Middle East conflict. The central bank also outlined tighter measures to steady the currency.
Governor Perry Warjiyo said foreign exchange action would be intensified through offshore and domestic NDFs, as well as spot markets. He also referred to improved monetary policy tools to manage liquidity and support rupiah stability.
Rupiah Defense Takes Priority
The policy move is intended to keep inflation within the 1.5–3.5% target for 2026–2027, despite pressure from global energy prices. The article also notes plans connected to centralising commodity exports through the sovereign wealth fund.
GDP growth for 2026 is forecast at 4.9–5.7%, with government spending cited as a support. The current account deficit is expected at 0.5–1.3% of GDP in 2026.
Bank Indonesia’s surprise 50 basis point hike is a forceful signal to support the Rupiah. This aggressive action means we should anticipate a stronger floor under the currency in the coming weeks. For us, this makes shorting the Rupiah a much more dangerous trade.
This move will likely crush near-term currency volatility as the central bank has shown its hand. We saw a similar pattern during the emerging market stress in 2025, where decisive action led to a drop in the cost of options. We see an opportunity in selling USD/IDR call options, positioning for the exchange rate to stabilize or strengthen from here.
Markets Reprice Carry And Hedging
The justification for this hike is clearly the currency, not inflation itself. Data from April 2026 showed inflation was at 3.1%, comfortably within the central bank’s target range. This tells us policymakers are being pre-emptive and have significant credibility to defend the IDR.
With the new policy rate at 5.25%, the appeal of the IDR carry trade has increased substantially, especially as US interest rates are holding around 5.0%. This wider rate difference will attract capital inflows and make it more attractive to be long IDR in the forward markets. We expect this to provide a steady bid for the currency.
The underlying economic fundamentals also offer a degree of comfort for holding Rupiah assets. With GDP growth forecast to remain strong at nearly 5% for 2026, Indonesia’s economy is on solid footing. This growth, alongside a manageable current account deficit, suggests the central bank’s policy is built on a stable foundation.
Given the bank’s commitment to using spot, NDF, and other tools, we should treat this as a coordinated effort to manage the currency. The cost of hedging against further Rupiah weakness has just gone up. We are now watching to see if the USD/IDR can hold below the 16,450 level it breached last week.
