7 Statistics on Financial Infidelity: How Couples Really Hide Money From Each Other

Updated July 2026

Bankrate surveyed 1,124 adults in 2025 and found that financial infidelity, willfully hiding money matters from a partner, touches 40% of people in committed relationships (source). This isn’t a handful of isolated bad actors. Secret spending, hidden debts, undisclosed accounts: these are common tools people reach for to protect financial privacy, often at the direct expense of relational trust. The post-pandemic economy hasn’t helped. Rising living costs, unstable income, and the pressure of stretching a fixed budget, especially for retirees, have turned financial secrecy into something closer to a coping mechanism for some couples, even as it quietly corrodes the relationship underneath.

Even a short-lived secret tends to outlast its own timeline. Money transparency isn’t just budgeting logistics, it’s a load-bearing wall in emotional intimacy. Once that trust cracks, patching it back together is hard work, even when the dollar amount involved was small.

What Counts as Financial Infidelity, and Where’s the Line Between Privacy and Deception?

This isn’t about forgetting to mention a $12 coffee habit. Financial infidelity is the deliberate withholding of money information that breaks the mutual expectations two people have set, whether spoken or assumed. Think: an unreported credit card, a large purchase kept quiet, cash parked in an account the other person doesn’t know exists. The Gottman Institute goes so far as to call a single secret account a breach of trust on its own, particularly when the other partner would experience it as betrayal.

Where privacy ends and deception begins is genuinely subjective. One partner might see a personal “slush fund” as harmless breathing room. But if the other would feel deceived upon finding out, that’s financial infidelity, full stop. Context does matter here: buying a surprise gift isn’t deception. Hiding its cost for six months, especially if it’s straining the household budget, is a pattern. Often what’s missing isn’t malicious intent at all, it’s simply that the couple never agreed on what “transparent” is supposed to mean.

How Common Is Financial Infidelity? The 7 Statistics That Define the Problem

This isn’t a fringe problem. The Bankrate 2025 survey puts the number at 40% of U.S. adults in committed relationships who’ve hidden money, assets, or debt from a partner. That figure covers secret spending, undisclosed debt, hidden cards, concealed accounts, the whole menu.

Break it down by specific behavior and the pattern gets sharper:

• 33% spent more than their partner would approve of without telling them, per Bankrate (2025).
• 23% hid existing debts, credit card balances, personal loans, or unpaid medical bills, according to Bankrate (2025).
• 18% maintained a credit card their partner didn’t know about, a number that’s stayed roughly steady in earlier research even though it rarely gets discussed publicly.
• 17% kept a secret savings or checking account, often for personal expenses or a private emergency cushion.
• Among those who admitted to financial secrets, 57% said the behavior damaged or ended the relationship. That’s the number that matters most, honestly.

Generational gaps are still there. The 2025 survey didn’t split out Gen Z or Millennial figures specifically, but the broader pattern is clear: younger adults default to financial privacy more readily, often framing it as autonomy rather than secrecy. Older couples aren’t immune either. 23% of married couples had no joint accounts at all in 2023, per the U.S. Census Bureau, which suggests financial separation isn’t strictly a young-people phenomenon.

Run the numbers for a second. If 33% of adults overspend without approval, and average discretionary spending tops $200 a month, that works out to roughly $66 per person monthly in unapproved purchases, or $792 a year. For a couple where this is happening on both sides, you’re looking at close to $1,600 annually. Stretch that over five years and you hit $8,000, more than what a decent used car costs. This isn’t really about small secrets anymore at that point. It’s compounding erosion of trust, dollar by dollar.

Who Is Most Likely to Commit Financial Infidelity? Generations, Income, and the Gender Myth

Yes, younger people hide money more often. But age alone doesn’t explain it. Bankrate’s 2025 survey shows adults under 40 lean toward keeping finances separate, usually citing independence or personal freedom as the reason. Yet 23% of married couples over 60 had no joint accounts in 2023 either, which tells you financial separation is a broader cultural habit, not something unique to one generation.

Income doesn’t predict it. Neither does gender, despite the common assumption that one partner (often painted as the higher earner, or the lower one, depending who’s telling the story) is more prone to hiding money. The data doesn’t back that up. What actually predicts concealment is whether a couple has ever sat down and built shared financial norms. Couples who talk about money regularly, set goals together, and review a budget as a team report meaningfully lower rates of secrecy.

45% of Americans in committed relationships think financial infidelity is at least as damaging as cheating physically, with 38% calling it equally harmful and 7% saying it’s worse, according to Bankrate (2025). That’s a striking number. It tells you financial trust and emotional security are basically the same wire.

Here’s a concrete case. Say you’ve got a 620 credit score and need roughly $8,000 for a medical bill. You take out a personal loan at a typical subprime rate of 22%, and over three years that’s $2,912 in interest on top of the principal. Now say you don’t tell your partner. Given that 23% of married couples don’t share accounts and 40% of partners hide money in some form, that debt could sit unspoken for years, quietly growing heavier. The real cost isn’t the interest rate. It’s what happens to the relationship the day the loan statement finally surfaces.

Not every dollar needs to be disclosed, to be fair. A small, temporary cushion, say $500, probably doesn’t need a formal conversation if it has no bearing on shared goals. But once that stash crosses roughly 0.5% of household annual income, or gets used regularly to cover recurring bills, it’s stopped being a private matter and started being financial infidelity.

One caveat worth stating plainly: none of this advice holds in high-conflict or controlling relationships. If a partner has a documented history of financial control or emotional manipulation, pushing for full disclosure can actually raise the risk of harm rather than lower it. In those situations, keeping money hidden may function as a safety measure, not a betrayal. That’s a different problem entirely, and it deserves a different response, usually one involving a counselor or advocate rather than a budgeting spreadsheet.

Related reading: How to Use a 1% Rule to Automate Smart Money Growth in 2025.

Frequently Asked Questions

What percentage of couples hide money from each other?

According to Bankrate’s 2025 survey, 40% of U.S. adults in committed relationships have committed financial infidelity by hiding expenses, debt, credit cards, or bank accounts.

Is financial infidelity more common among younger or older adults?

Younger adults, especially those under 40, are more likely to maintain separate finances and hide money, but the trend isn’t exclusive to youth. 23% of married couples in 2023 had no joint accounts, which tells you financial separation cuts across age groups.

How does financial infidelity compare to physical infidelity in terms of damage?

45% of Americans in committed relationships believe financial infidelity is at least as damaging as physical infidelity, with 38% saying it’s equally harmful and 7% saying it’s worse, according to Bankrate (2025).

What’s the most common form of financial secrecy?

The most common form is spending more than a partner would approve of without disclosure, reported by 33% of adults in committed relationships, according to Bankrate (2025).

Do couples with joint accounts still hide money?

Yes. Even in relationships with joint accounts, 40% of adults admit to some form of financial secrecy. Sharing an account clearly doesn’t guarantee honesty.

Can financial infidelity be repaired?

Yes, but it takes real work: honesty, accountability, and structured communication. Repair usually means full disclosure, building a joint financial plan, and staying transparent going forward. Counseling helps, particularly when both people are actually committed to changing, not just avoiding the next argument.

Why do people hide money even in healthy relationships?

Fear of judgment, shame over debt, a desire for personal autonomy, or scar tissue from past financial conflict. Usually the money itself isn’t the issue. It’s that the couple never built a shared framework for what financial honesty looks like.

Is hiding a small amount of cash from a partner considered financial infidelity?

Yes, if it breaks a mutual understanding. Small secrets add up over time. What makes it a problem isn’t the size of the amount, it’s the intent behind hiding it and the harm that surfaces if it’s discovered.

Does financial secrecy affect long-term relationship stability?

Yes. 57% of those who engaged in sneaky spending said the behavior damaged or ended the relationship, according to Bankrate (2025). Secrecy has staying power, and not the good kind.

What resources can help couples improve financial transparency?

Financial counseling, budgeting apps like YNAB or Mint, and structured money workshops all help. The Office of the Comptroller of the Currency recommends financial institutions support transparency through education, while the Federal Trade Commission stresses clear communication around financial matters generally.

Author Insight and Institutional Guidance

Financial infidelity isn’t purely a personal failing, it’s shaped by how financial systems are built and how institutions manage risk around money and data. The Federal Trade Commission lays out guidance for organizations managing data breaches: assess the situation, secure the systems, notify the people affected. That same framework applies to any financial institution handling personal account data.

The Cybersecurity and Infrastructure Security Agency (CISA) outlines sector-specific risk management for financial services, including protections against the kind of cyber threats that could expose sensitive account information.

Regulators aren’t sitting this one out either. The New York Department of Financial Services (NY DFS) requires covered entities to run cybersecurity programs with formal incident response plans and to report certain events when they happen.

And the Office of the Comptroller of the Currency (OCC) pushes financial institutions toward cross-functional breach response teams aligned with frameworks like NIST’s Cybersecurity Framework.