Financial privacy in a marriage does not necessarily mean keeping money secrets. One spouse can have a personal checking account, a private credit card, or a hobby budget without creating a financial problem. The harder question involves what the other spouse needs to know because it affects the household, shared goals, debts, or future plans.
That distinction matters more now because married couples use many different arrangements. Fidelity’s 2026 Couples & Money study found that only 42% of couples combine finances into joint accounts, while about one in five keep everything separate. The same study found that nearly one in four respondents had hidden a financial secret from a partner.
