Dollar to rupiah: Rp18,089 per dollar as South Korea's won gains

What the market shows. The rupiah opened Monday at 18,089 per dollar against 18,080 at the previous close. That is 9 points, or 0.05%, weaker, per ANTARA. CNBC Indonesia at 09:41 Jakarta time had a different figure: down 0.30% at 18,095. The numbers likely differ because the time and the data source differ. Simple math: at 18,089, one hundred dollars is about 1.81 million rupiah.

Who is rising nearby. The US dollar weakened on Monday, and six of ten currencies in the region were up. The South Korean won led with a 0.18% gain to 1,321.21 per dollar. The yen rose 0.13% to 156.65. The ringgit, the yuan and the Singapore dollar gained only 0.02% each, so "surge" is too strong for them. Only the Philippine peso did worse than the rupiah, down 0.33%.

Why the dollar is softer. The dollar index (DXY) fell 0.19% to 101.617. CNBC gives the reasons: lower US government bond yields (the 10-year near 4.974%) and lower oil after reports of a Qatari mediator in Tehran. Ray Attrill of National Australia Bank, as quoted by CNBC from Reuters, said the US bond market is the main driver of the dollar for now. The rupiah has its own weak spots: in June Al Jazeera cited strong dollar demand from costly oil and a narrower Indonesian trade surplus.

What came before. On 29 September Reuters reported that the rupiah weakened past 18,000 per dollar (to 18,010) for the first time in nearly two months, as yields and oil prices rose. On 4 June Al Jazeera reported a record-weak rupiah at 18,028 per dollar. The pages we opened today do not say Monday was a new record, and we do not claim it.

What next. This week brings the Fed, ECB and Bank of Japan decisions. We already covered them here: https://freekonomist.com/news/central-bank-week-fed-ecb-boj-2026-10-27/. You can follow the dollar itself on our DXY page: https://freekonomist.com/stocks/dxy/. We give no forecasts for the rate and no advice to buy or sell currency.

已确认的事实

• On Monday, 26 October 2026, at the open the rupiah weakened 9 points, or 0.05%, to Rp18,089 per US dollar from Rp18,080 at the previous close.^[1]
• According to Refinitiv at 09:41 Jakarta time on 26 October, the rupiah weakened 0.30% to 18,095 per dollar, moving further from the psychological level of 18,000.^[2]
• The South Korean won rose 0.18% to 1,321.21 per dollar, the yen 0.13% to 156.65 and the Taiwan dollar 0.05%; the yuan, the Singapore dollar and the ringgit each gained 0.02%.^[2]
• Six of the ten Asian currencies in the CNBC Indonesia list were up; only the Philippine peso fell more than the rupiah (down 0.33%), while the baht lost 0.09% and the dong 0.04%.^[2]
• The dollar index (DXY) fell 0.19% to 101.617 as US government bond yields and oil prices declined.^[2]
• The US 10-year Treasury yield was about 4.974% and the 30-year 5.299%, both near one-month lows.^[2]
• Ray Attrill of National Australia Bank said the US bond market looks to be the main driver of the dollar more broadly for now (quoted by CNBC Indonesia from Reuters).^[2]
• The Fed, the ECB and the Bank of Japan are expected to keep rates unchanged; investors' attention, per CNBC Indonesia, is likely on signals about the next policy steps.^[2]
• On 29 September 2026 the rupiah breached 18,000 per dollar for the first time in nearly two months, to 18,010, its lowest since 4 August.^[3]
• On 4 June 2026 the rupiah fell to 18,028 per dollar, which Al Jazeera called its weakest level ever.^[4]
• Indonesia is a net oil importer and is particularly affected by costly crude, Al Jazeera wrote in June; its trade surplus narrowed to $89m in April from $3.3bn a month earlier.^[4]

影响

• 已确认The rupiah trades near 18,000 per dollar while most Asian currencies rise on Monday.
• 我们的解读The rupiah's next moves may depend on US bond yields and the oil price.
• 我们的解读Central bank signals this week may move both the dollar and Asian currencies.

仍未知

• Whether the day ends below or above 18,000: the pages show only the morning.
• Whether Monday's rate is a new record: the pages we opened do not say.
• What exactly holds the rupiah back: CNBC Indonesia names no cause, and the June causes from Al Jazeera may no longer apply.
• What the Fed, the ECB and the Bank of Japan decide and what they say about the path ahead.

影响到谁

Indonesia, Asia, United States. People who follow the dollar to rupiah rate, Asian currencies and this week's central bank decisions

来源

1. ANTARA News Sultra: Rupiah pada Senin pagi melemah 9 poin jadi Rp18.089 per dolar AS 2026年10月26日 · 媒体
2. CNBC Indonesia: Mata Uang Asia Beda Nasib: Won- Ringgit Menggila, Rupiah Tetap Loyo 2026年10月26日 · 媒体
3. Reuters: Rupiah breaches 18,000/dlr for first time since August on rising yields, oil 2026年9月29日 · 媒体
4. Al Jazeera: Indonesia's rupiah falls to record low against US dollar 2026年6月4日 · 媒体