T-Mobile has officially launched its Money checking account for all US T-Mobile customers, following its soft launch back in November 2018. Some of what T-Mobile offers exclusively to its customers is noteworthy, especially if you’re serious about gaining interest on your cash. On balances up to $3,000, you’ll accrue an attractive 4 percent APY (annual percentage yield), so long as you’re depositing at least $200 into the T-Mobile Money account each month. That kind of perk is usually reserved for savings accounts, and T-Mobile’s competitive 4 percent rate could help your money grow more quickly than some. There’s also no minimum balance requirement for a Money account and no fee to keep it open.