Defending the rupiah with stablecoins

Since 1 July a resident can buy at most US$10,000 a month. It is the fourth tightening in a row, and on paper it works: Bank Indonesia records lower daily foreign exchange volumes after each cut.

Those calm numbers count only what passes the official door, the banks. They do not see the door in almost everyone’s pocket: digital money pegged to the dollar, the US dollar stablecoin.

The quiet dollarisation

People who are limited in buying dollars do not stop wanting dollar value. Some move to stablecoins, and that move appears in no foreign exchange statistic. The old dollarisation was visible, a queue at the money changer. Today’s is silent: a few taps and savings change their peg, while the regulator still sees calm data. Every new limit makes the unguarded door busier.

The money also goes somewhere. Each rupiah turned into a dollar stablecoin ends up as reserves with the issuer, and the issuer buys US government debt. The largest issuer alone reported about US$141 billion of US Treasuries in its first quarter attestation. Indonesian digital savings are helping fund Washington, and Indonesia is becoming a market for another country’s digital currency with no rupiah player of its own.

Play, and win at home

The United States passed the GENIUS Act in July 2025, opening dollar stablecoin issuance to banks and companies. That is currency export policy. Europe rewrote its digital asset rules to hold dollar stablecoins back, and Japan licensed private issuers: the first licensed yen stablecoin circulated in late 2025.

Indonesia has a working precedent in electronic money, where licensed private companies issue digital rupiah under supervision. The amended P2SK Law now places digital assets under OJK. Government bonds are a safe reserve asset, and a rule that issuers hold them creates new demand for the state’s own debt.

A ban would only push volume to offshore platforms we cannot supervise. The real choice is between visible and invisible. OJK can set a licence for private rupiah stablecoin issuers, with full reserves in cash and government bonds, published audits and one to one redemption, distributed through licensed institutions. Bank Indonesia keeps its role in settlement and monetary oversight, and dollar stablecoin trading against the rupiah is watched officially as a gauge of confidence.

A currency is not defended from the stands. In a channel that cannot be closed, the way to protect the rupiah is to play, and to win at home.