BI rate at 5.5 percent: A lesson in maintaining economic trust

A country’s economic sector is always dynamic, often forcing the government and monetary authorities to adopt unpopular policies. The decisions taken may not please the public, the business community, or even the market. Yet it is precisely at such moments that the quality of economic governance is tested—not when the situation is calm, but when pressure comes from multiple directions simultaneously. Bank Indonesia’s decision on 9 June 2026 to raise its benchmark interest rate to 5.5 percent is one example of a policy born from such a situation. Within three months, the BI Rate has risen by 75 basis points, from 4.75 percent at the beginning of the year to 5.25 percent in May, and then further to 5.5 percent in June. This step was not taken suddenly but was based on lengthy consideration. The rupiah is still moving above Rp18,000 per US dollar, while Indonesia’s foreign exchange reserves in May 2026 fell to 144.9 billion US dollars, shrinking by nearly 3 billion US dollars compared to the previous month. At the same time, Bank Indonesia Governor Perry Warjiyo acknowledged that the rupiah’s exchange rate movement is weaker than previously estimated. This statement is important because it shows that the pressures facing the national economy do not fully align with initial projections. Under such conditions, the central bank must act swiftly to maintain stability. One of the most directly available instruments is raising interest rates. In theory, raising interest rates has a clear purpose: when the yield on rupiah financial assets increases, foreign capital has a greater incentive to enter or remain in the country. Currently, Bank Indonesia Rupiah Securities with a 12-month tenor offer a yield above 6.5 percent, a fairly competitive rate compared to several other developing nations. However, every economic policy always carries consequences. There is no such thing as a free lunch in economics. When interest rates rise to strengthen the appeal of financial assets, borrowing costs for the public and businesses also increase. For households with floating-rate mortgages, a rate rise means larger instalments in the following months. For MSME entrepreneurs relying on working capital credit, operational costs grow when business margins are already under pressure. Businesses that had previously planned expansion also tend to become more cautious because financing costs become more expensive. This is where the policy dilemma emerges. Exchange rate stability is indeed important, but efforts to maintain that stability have the potential to slow economic growth. Therefore, the BI Rate decision of 5.5 percent teaches one thing that is often forgotten in economic discussions: the rupiah exchange rate is not merely a number that appears on foreign exchange trading screens.