Annual Percentage Yield (APY) is subject to change at any time. Average monthly yield for funds held in Wallet for one year with APY shown. Wallet yield is calculated daily based on that day's minimum balance and is paid out monthly within 30 days. See Terms. Ambrook partners with Stripe Payments Company for money transmission services and account services with funds held at Fifth Third Bank N.A., Member FDIC. Card services provided by Celtic Bank, Member FDIC.