"I've actually never played for money — I just thought you would go out there and hold a trophy," Williams said on Kneading Dough, a personal finance video series from Uninterrupted, a sports media company. "Not once did I think about a check."
In fact, Williams was so unconcerned about how much she earned that she tried to deposit her first million-dollar check into her account using a bank's drive-thru, Business Insider reports.
"I never touched [the money] — just put it in the bank," she told Uninterrupted CEO and sports business manager Maverick Carter. "And I remember I went through the drive-thru to deposit my check, and then they were like, 'I think you need to come in for this,' and so I ended up going inside."
Williams, who earned $27 million last year and is the highest-paid female athlete in the world, said her parents raised her with a good sense of financial security.
"Looking back, I'm like, we lived in a two-bedroom house with seven people," she said. "I don't know how my parents were able to make me feel that way, but they did, and that was something really special."