Central banks are testing cross-border blockchain payments because the current international payment system is often slow, expensive, fragmented, and difficult to monitor. Successful tests suggest blockchain-based systems could improve how money moves between countries.

Here are the main reasons central banks are interested:

Faster international payments
Traditional cross-border transfers can take several days because they pass through multiple intermediary banks and settlement systems. Blockchain-based settlement can happen in seconds or minutes, sometimes 24/7.
Lower costs
International payments involve correspondent banking fees, FX conversion fees, reconciliation costs, and operational overhead. Shared distributed ledgers can reduce the number of intermediaries and automate settlement processes.
Reduced settlement risk
In conventional systems, one side of a transaction may complete before the other, creating “settlement risk.” Blockchain systems can support atomic settlement — both sides settle simultaneously — reducing counterparty exposure.
Better transparency and traceability
Distributed ledgers create a shared record visible to authorized participants. That can improve auditability, compliance monitoring, anti-money-laundering controls, and error resolution.
Central Bank Digital Currency (CBDC) experimentation
Many tests are connected to wholesale CBDCs — digital forms of central bank money used by financial institutions. Projects explore whether multiple countries’ CBDCs can interoperate more efficiently.

Some notable examples include:

Bank for International Settlements projects such as Project mBridge
European Central Bank experiments with distributed ledger settlement
Bank of England research into wholesale digital settlement assets


Monetary Authority of Singapore blockchain payment pilots
Geopolitical and strategic concerns
Countries also want alternatives to systems dominated by a few global networks such as SWIFT and dollar-clearing infrastructure. Blockchain-based payment rails may increase resilience and reduce dependence on existing intermediaries.
Financial inclusion and broader access
Some projects aim to make international payments more accessible for smaller banks and emerging markets that currently face high barriers in correspondent banking networks.

However, “successful tests” do not mean central banks are replacing existing systems soon. Most pilots are still limited experiments. There are unresolved issues around:

privacy
cybersecurity
interoperability
legal jurisdiction
monetary sovereignty
scalability
governance

Many central banks are cautious because public cryptocurrencies and state-backed digital payment infrastructure are very different things. Most projects use permissioned blockchain systems controlled by regulated institutions rather than open networks like Bitcoin or Ethereum.