In a letter to G20 central bankers and finance ministers who will meet in Buenos Aires on Monday and Tuesday, Mr Carney said: “The FSB’s initial assessment is that crypto-assets do not pose risks to global financial stability at this time.”
Interest in cryptocurrencies surged last year as prices rocketed only to tumble in recent months, triggering warnings from regulators.
Mr Carney, who stands down next year when his term as governor of the Bank of England ends, signalled that whoever succeeds him would be overseeing a more open watchdog focused on reviewing rules instead of pushing through new standards.
He said: “As its work to fix the fault lines that caused the financial crisis draws to a close, the FSB is increasingly pivoting away from design of new policy initiatives towards dynamic implementation and rigorous evaluation of the effects of the agreed G20 reforms.”
The FSB, which coordinates financial regulation for the Group of 20 Economies, said more international coordination was needed to plug data gaps in monitoring the rapidly evolving but still tiny sector worth less than 1 percent of global GDP at its peak.
It comes after US President Donald Trump ordered American regulators last year to scale back on post-crisis banking and derivatives reforms to encourage more lending to the economy.
The move led to fears among regulators around the world that the United States, where lawmakers have long been lukewarm towards global regulatory bodies, would turn its back on international cooperation and fragment markets.
But Mr Carney said the FSB would be more open, disciplined and efficient, with a quarter of its working groups having already been scrapped.
The FSB membership will undertake a thorough review of whether the watchdog is “fit for purpose” for evaluating and amending rules.
To underline his message, he set out a list of rules that will be reviewed.
The FSB will assess this year whether financial rules could be changed to make it cheaper to invest in infrastructure, seen as a key sector for boosting long-term, sustainable economic growth.
The FSB will also report this year on whether reforms to inject more transparency into derivatives markets have created the right incentives to clear trades.
The watchdog will study the impact of existing rules on financing small companies and report back next year on whether changes are needed.