The rupiah closed at Rp18,110 per US dollar on 26 October 2026, down 0.39% on the day and its weakest close since early June, according to CNBC Indonesia. If you searched “uang” and landed here, this is the story behind the number: oil, Middle East fears, an MSCI warning and steady foreign selling.
Key takeaways
- The rupiah ended 26 October 2026 at Rp18,110 per dollar, from Rp18,040 on the previous Friday.
- It touched an intraday low of Rp18,130 before recovering about 20 points.
- Four pressures overlap: oil, Iran-related fears, an MSCI reclassification proposal and equity outflows.
- Bank Indonesia (BI) called the move “ordinary volatility” and said it keeps watching the market.
How far did the rupiah fall on 26 October 2026?
CNBC Indonesia, citing Refinitiv data, reports the rupiah opened 0.06% lower at Rp18,050, slid to Rp18,130 and closed at Rp18,110. Earlier that day, Antara had the opening at Rp18,089, with a forecast range of Rp18,050 to Rp18,150.
The rupiah first broke through Rp18,000 on 4 June 2026, as reported by RMOL. It has hovered around that line since. The table below shows recent closes as reported by Indonesian outlets.
| Date (2026) | Close per US$ | Move reported |
|---|---|---|
| 16 October | Rp18,027 | Down 0.50% |
| 19 October | Rp18,046 | Down 0.11% |
| 21 October | Rp18,022 | Down 0.17% |
| 23 October | Rp18,040 | Friday close |
| 26 October | Rp18,110 | Down 0.39% |
Why is the rupiah weakening? Four forces
1. Oil and the Middle East. Antara reports Brent closed at $116.72 a barrel on Saturday, 24 October 2026, up 3.14%. Investors feared renewed fighting after a report that the US and Israel were planning strikes on Iran after the US midterm elections on 3 November, plus Iranian reports of attacks on ships near the Strait of Hormuz. Indonesia imports a lot of fuel, so costlier oil means more dollars leaving the country. Our earlier piece on why Brent sits near $110 covers the oil side.
2. A risk premium. A risk premium is the extra return investors demand to hold an asset they see as more dangerous. KONTAN framed the rupiah’s problem this way: when risk rises, investors ask for more compensation, and a weaker currency is one way that shows up.
3. The MSCI proposal. On 15 October 2026, MSCI launched a consultation on moving Indonesia from Emerging Market to Standalone Market status. It cited opaque shareholding structures and suspected coordinated trading, and noted that Frontier status would not reflect the severity of the concerns. Feedback is open until 30 April 2027, with a final decision due by 30 June 2027, per MSCI’s press release. Index funds that track MSCI benchmarks may have to sell if the change goes ahead.
4. Foreign outflows. Lukman Leong of Doo Financial told Antara outflows from Indonesian stocks remain large, averaging Rp1 to 2 trillion a day. Foreign sellers must convert rupiah to dollars, which pushes the rupiah down.
What is Bank Indonesia saying?
CNBC Indonesia quotes BI’s Destry Damayanti calling the move “volatilitas biasa”, ordinary volatility. She said BI is staying in the market, that the rate depends on supply and demand, and that it is not changing its intervention strategy. She did not name a single cause for the day’s weakness.
In my opinion, “ordinary” is a generous word for a four-month low. But it signals BI will defend orderly trading rather than a particular price level.
What happens next
CNBC Indonesia says traders are preparing for key US data in the week of 26 October 2026, including the Federal Reserve’s rate decision, GDP and inflation. The US dollar index was almost flat at about 101.8 on 26 October, so the rupiah’s drop was mostly local and oil-driven rather than a broad dollar surge.
Watch three things: oil prices around the 3 November US elections, any further MSCI statements, and whether foreign selling in Jakarta slows. Rupiah moves are driven by sentiment as much as by data, so forecasts carry wide error bars.
FAQ
What was the rupiah rate on 26 October 2026?
It closed at Rp18,110 per US dollar, down 0.39% from Rp18,040, per Refinitiv data cited by CNBC Indonesia.
Why does oil weigh on the rupiah?
Indonesia buys large volumes of fuel in dollars. Higher oil prices raise that bill and add pressure on the currency, while Middle East tension also pushes investors away from emerging markets.
Is the MSCI downgrade final?
No. It is a proposal. MSCI is taking feedback until 30 April 2027 and plans to announce its decision by 30 June 2027.
Next step: check the official JISDOR rate on Bank Indonesia’s website before any currency exchange, since quoted retail rates differ from market closes.
This article is for information only and is not investment advice.
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