Rain joins Mastercard as Principal Member — stablecoin cards now live in 210+ countries!

Stablecoin payments startup Rain has become a Mastercard Principal Member, unlocking the ability to issue stablecoin-powered credit and prepaid cards across Mastercard's network of hundreds of millions of merchants in over 210 countries and regions. Rain already holds a relationship with Visa, making it one of the few fintechs with principal-level access to both of the world's largest card networks.

Rain's infrastructure was built natively for stablecoin card programs rather than adapted from a fiat model, allowing operators to expand across geographies through a single integration. Beyond card issuance, Rain and Mastercard plan to explore settling select program flows on-chain using regulated stablecoins — a move that could ease the capital intensity and operational constraints of traditional settlement rails.

The partnership fits within Mastercard's broader stablecoin push, which…