Feels odd that you exclude mentioning the EU, which has had instant transfers for more than a decade. More than two decades, if you include things like iDeal from The Netherlands.
Wasn't intentional, I mention SEPA and Wero in other comments, not intended to be an enumeration of all instant payment systems currently active globally. My apologies!
https://www.pymnts.com/wp-content/uploads/2025/05/PYMNTS-Rea...
https://www.emerald.com/cemj/article/33/4/575/1248919/The-ri...
Some banks in some parts of the EU have - SEPA instant was only mandated in January 2025, only for Euro payments.