Are middle class banking customers a silent majority that can be successfully marketed to as a cohort of their own?

That’s the wager of former PayPal and Intuit CEO Bill Harris, whose digital bank for middle class Americans, One, has just raised $17 million in funding. The capital infusion brings the San Francisco, California-based firm’s total capital to $26 million.

“Middle-class American families are being left out, and we built One specifically for them,” Harris said. “One will combine the technology and convenience of challenger banks with a full-suite of products that traditional banks offer.”

The Series A round featured participation by Foundation Capital, Core Innovation Capital, and Obvious Ventures. Harris initiated the round last year in partnership with One CEO Brian Hamilton, formerly the CEO of Azlo. The digital bank is in private beta now and is slated for a launch this summer. One will offer competitive rates for savers, and combine debit and credit into a single account with one card.

“The current financial system breaks up the money people earn into silos, making it hard for busy families to stay on top of their banking and credit accounts,” Hamilton explained. “Most people have a balance in their checking account that earns nothing and outstanding debt on their credit card that costs too much.”

One accountholders earn 3% APY on their balances when saved via One’s Auto-Save feature (1% APY on other saved balances), and can borrow at a monthly rate that is as low as 1%. No interest is charged on funds repaid within the borrowing month, and accountholders can increase their credit limit by setting up direct deposit.

One also supports shared “pockets” for saving, spending, and borrowing, to make it easier to share funds with family members, roommates, team members, and others. The digital bank charges no overdraft or cash advance fees, does not require a minimum balance, and provides access to more than 55,000 ATMs.

“One is designed to maximize a family’s hard-earned paycheck by unifying saving, spending, and borrowing into one account,” Hamilton said. “When this money is being managed from one place, people save more, are charged less, and gain control.”