Kast has launched KAST Business, expanding from consumer-focused USD accounts, Visa debit cards and international transfers into enterprise accounts, payroll, vendor payments and cross-border payouts. The platform offers fiat virtual accounts through regulated partners, stablecoin and crypto deposits, virtual cards, local-currency transfers in more than 20 currencies and service across more than 170 countries, although product access varies by jurisdiction. Businesses can earn up to 8% annual percentage yield on idle balances and receive up to 3% cashback on card spending. Kast says the return is generated through short-term U.S. Treasuries and stablecoin yield, but has not published a full breakdown of the underlying products, counterparties, fees or conditions for receiving the maximum rate. Kast operates as a financial technology company rather than a bank, with regulated services provided through licensed partners. The company has raised an $80 million Series A co-led by QED Investors and Left Lane Capital at a reported valuation of roughly $600 million. Founded in July 2024 by former Circle executive Raagulan Pathy, Kast reports more than 1 million users and is targeting 1,000 to 5,000 active businesses by the end of 2026, alongside a previously stated goal of reaching a $100 million revenue run rate in 2026. The launch comes as U.S. policymakers examine stablecoin rewards under the GENIUS Act, which bars payment stablecoin issuers from paying interest or yield solely for holding their tokens.