New research from Fidelity reveals a significant generational shift in how couples manage their money. According to the survey of over 3,000 married or partnered couples, 34% of Gen Z and 26% of millennial couples keep all their funds in separate accounts, compared to just 19% of Gen X and 15% of baby boomers. A mixed approach is also more popular among younger generations: 42% of millennial couples use both individual and joint accounts.

Financial experts warn this trend can lead to confusion, delayed shared goals, and financial infidelity. Registered financial planner Jason Fannon says separate accounts increase the risk of missed payments, lower credit scores, and difficulty borrowing. He advises couples to list each other as beneficiaries to avoid legal complications if one partner becomes incapacitated or dies.

The rise in separate accounts is driven by more women working, later marriages, increased student loans, and the coming “great wealth transfer.” Fidelity survey found 46% of women feel financially dependent, compared to 16% of men. Financial coach Jade Warshaw from "The Ramsey Show" says couples are "preparing for the worst, instead of expecting the best" after witnessing divorces.

Nearly half of respondents avoid money talks because they fear arguments, and a quarter admit to hiding a financial secret. Warshaw urges couples to have open conversations early. For those who keep separate accounts, Fannon recommends a monthly allowance for individual spending while handling joint goals from a shared account.