A report released by economists at the European Central Bank finds that expanding use of stablecoins in the euro area presents a set of risks to monetary policy effectiveness and to banks' capacity to lend. Stablecoins - crypto assets engineered to keep a stable value - are still a niche market, but their rapid expansion has prompted concern that regulation is lagging behind a product that could alter the mechanics of both commercial and central banking.
The study identifies two principal channels through which stablecoins can affect the euro-area financial system. First, wider adoption of stablecoins could prompt depositors to move funds out of bank accounts and into stablecoin instruments. For incumbent lenders, such outflows would mean replacing cheaper deposit funding with more costly market funding, with potential consequences for banks' willingness and ability to extend credit.
"In other words, stablecoins can reduce the amount of credit banks provide to the real economy," the paper, written by ECB economists, said.
The second channel relates to the currency composition of most stablecoins. The study notes that a substantial share of stablecoins in circulation are issued in dollars, a currency outside the ECB's policy control. If dollar-denominated stablecoins gain broader use in Europe, actions by foreign monetary authorities could start to influence euro-area liquidity and spending conditions - effectively "importing" external monetary conditions.
"Foreign monetary conditions could be 'imported' into the euro area through stablecoins," the paper said, adding that that would weaken the central bank's control over financial conditions, among other things, especially during periods of financial stress.
The ECB economists underscore that any weakening of banks would also undermine the central bank's capacity to transmit interest-rate adjustments into the real economy, making policy effects harder to predict and potentially less effective. The study cautions that a hit to bank balance sheets and deposit bases could therefore amplify the challenge for monetary authorities seeking to steer economic activity.
At the same time, the paper places the current size of the phenomenon in context. Euro-area bank deposits still amount to about 17 trillion euros, while the global stablecoin market stands at roughly $300 billion, indicating that banks have not yet experienced a material withdrawal of deposits tied to stablecoins.
To address the highlighted vulnerabilities, the report recommends meaningful regulatory measures. These include stronger transparency requirements for stablecoin reserves, robust guarantees to ensure redemption, adequate capital buffers to absorb potential losses, and effective oversight - steps the authors say can reduce the financial risks posed by stablecoins.
Exchange rate note: ($1 = 0.8627 euros)