Digital Dollarisation: When Payment Choice Becomes Policy Constraint

The subject here is digital dollarisation: the possibility that dollar-denominated stablecoins add a new channel for currency substitution in emerging market and developing economies. The important question is not whether people can hold a digital dollar, but how that choice changes savings, payments, exchange-rate markets, capital controls, and the reach of domestic monetary policy. The evidence supports a conditional mechanism, strongest where local money and payment institutions are already fragile—not a claim that every stablecoin user or every developing economy is on the same path.

Stablecoins add a layer to traditional dollarisation

Traditional dollarisation has several channels. Residents can hold foreign banknotes, keep foreign-currency deposits or take foreign-currency loans through banks, and write trade contracts or other obligations in a foreign unit. These channels connect currency substitution to visible institutions: notes enter through exchange and payment networks, bank deposits appear on balance sheets, and contracts can be observed in commercial or financial records, even if measurement is imperfect.

Stablecoins add a different kind of holding: a dollar-denominated token in a hosted or unhosted digital wallet. A hosted wallet is controlled through an intermediary such as an exchange or wallet company. An unhosted wallet is controlled directly by the user. In either case, a resident may be able to acquire and transfer a dollar-linked claim without opening a foreign-currency bank account. The token can move continuously through a smartphone and, in principle, across borders without passing through the same correspondent-banking chain as a conventional payment.

That lower entry barrier is the first reason digital dollarisation can differ from its traditional counterpart. A person who cannot easily access a foreign bank account may still reach a dollar stablecoin through an exchange or peer-to-peer transfer. The token can be self-custodied, which gives the holder more autonomy from a domestic bank. Public blockchains also make transfers pseudonymous from the perspective of ordinary observers, potentially making them harder for authorities to monitor than movements recorded within the banking system.

The second difference is continuity. A bank transfer, foreign-exchange transaction, or remittance may be constrained by business hours, correspondent relationships, or local payment infrastructure. A stablecoin can circulate around the clock. That feature can be valuable for cross-border payments and for residents who need to shift value quickly when domestic money is losing purchasing power. It can also let a person move from local currency to a dollar-linked token without first changing a formal deposit or contract.

The third difference is the possible relationship with capital controls. A conventional control may regulate bank transfers, foreign-currency purchases, or declarations of cross-border funds. A peer-to-peer token transfer can create another route around those channels. The existence of that route does not mean every transfer evades a control, and on- and off-ramps remain points where regulation can apply. It means that authorities may have to monitor a payment environment that is not fully represented by bank records or traditional balance-of-payments statistics.