Tariffs Pressure Rupiah, Favor USD Strength

The currency has already been under pressure, with USD/IDR recently pushing toward 18,115 per dollar in the face of steady Bank Indonesia rates and external shocks. On the technical side, the rupiah’s recent trading has been choppy rather than decisively corrective, with the pair hovering near the upper end of its recent range. That suggests the market is not yet pricing a durable turnaround — even before the tariff shock is fully absorbed.

The bigger macro problem is that tariffs do not stop at the border. They can dent Indonesia’s export momentum, especially if demand from the US weakens or global supply chains reprice around higher trade costs. They can also intensify a familiar emerging-market headwind: when the dollar firms and Treasury yields stay elevated, capital tends to favor safety over cyclicals. The 10-year US Treasury yield has been grinding higher, while the 2s-10s curve remains modestly positive, a setup that supports dollar resilience and leaves less room for fragile currencies to recover.

That is why Purbaya’s confidence that the rupiah will strengthen deserves skepticism in the near term. The market underestimates how quickly trade frictions can feed into funding costs, importer hedging demand and corporate margins. Even if the currency eventually stabilizes, the path is likely to be uneven, and that matters for listed companies with heavy dollar exposure, import dependence or thin pricing power.

Investors should think in terms of winners and losers. Domestic banks with limited foreign-currency mismatch and companies tied to local consumption can outperform if policy stays orderly. Import-heavy sectors, dollar borrowers and firms dependent on overseas equipment or commodities face the opposite setup. If tariffs broaden or sentiment sours further, the pressure could also spill into Indonesian sovereign spreads and foreign portfolio flows.

The market’s next catalyst will be whether tariffs translate into a measurable hit to trade balances and whether Bank Indonesia is forced to lean harder against currency weakness. If that happens, the current debate will shift from “temporary volatility” to “a slower growth, higher-import-cost regime.” That is when investors who positioned early for USD strength, selective exporters and balance-sheet quality are likely to be rewarded.