a’s foreign reserves are down about $12 billion this year, and an earlier 0.50% hike in May didn’t stop the decline. The trade-off shows up in bonds: with the 10-year yield around 7.404% and the 1-year near 7.231%, tighter financial conditions can help the rupiah in the short run while raising borrowing costs across the economy.
Why should I care?
For markets: Bank Indonesia’s 0.25% surprise may support the rupiah, but the bond curve is the scoreboard.
An off-cycle hike can steady a currency even when reserves are falling because it lifts short-term yields and widens the gap versus US rates, which can attract “carry” flows (investors earning the interest difference) and push short sellers to buy back the rupiah. That’s one reason the currency briefly popped after the decision. But the defense has a price: if investors demand yields around 7.2%-7.4% to hold local bonds, that higher discount rate can cap how far rate-sensitive Jakarta stocks, including big banks like Bank Central Asia, Bank Mandiri, and Bank Rakyat Indonesia, can climb. In other words, watching where Indonesian government-bond yields settle is a practical way to gauge how costly rupiah stability is becoming.
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