Learn
Plain-English guides to how your money earns and what cards charge.
Last updated:
Guides
- What is APY?Annual percentage yield explained, with examples at 3% and 4%.
- What is an FX markup?The extra percentage cards add when you pay in another currency.
- What do ATM fees cost?The average out-of-network withdrawal cost $4.86 in 2025.
- How does stablecoin funding work?USDC, USDT and PYUSD — which networks, and where to send from.
- How is my money held?FDIC-insured partner bank or a U.S. Treasury money-market sweep.
- What is the ACK card?The $0-fee Visa/Mastercard debit card from ACK Fintech Inc.