Can Financial Infidelity Be a Relationship Killer?

What people think are little white lies about money often cause major relationship issues.

Frustrated Man Pointing At Bill While His Girlfriend Shrugs Her Shoulders
Frustrated Man Pointing At Bill While His Girlfriend Shrugs Her Shoulders

Image source: Getty Images.

When people hear the word “infidelity,” their first thought is usually a partner having a physical or emotional affair. And while that is one type of fidelity, there’s another that can do just as much damage to a relationship.

It’s called financial infidelity, which is any sort of deception between partners regarding money. As you’ll find out, this issue is extremely common, and in many cases, it can even lead to a breakup.

How big of a problem is financial infidelity in a relationship?

To get an idea of how severe financial infidelity is, we asked people in serious relationships to rate it on a scale of one to five, with one signifying no problem and five indicating an extreme problem.

There were three forms of financial infidelity participants in a survey from The Ascent rated: deception regarding debt, deception about earnings or assets, and deception regarding purchases. Here’s the average score our participants gave each of those:

  • Deception regarding debt -- 3.5

  • Deception about earnings or assets -- 3.2

  • Deception regarding purchases -- 3.1

That puts each form of financial infidelity in the three (moderate problem) to four (severe problem) range. For comparison’s sake, the two most severe issues were sexual infidelity and emotional abuse or manipulation, which each had an average score of 4.2.

So although it’s not the most severe relationship challenge, financial infidelity is a serious problem that can harm or even end a relationship. Money issues are already a common source of strife for couples, so adding deception to the mix only compounds the issue. This is especially true if you and your significant other have combined finances with joint bank accounts or if you want to do so in the future.

Of course, the severity depends on the extent of the financial deception. While hiding any sort of debt is a problem, concealing $500 of credit card debt isn’t on the same level as concealing $15,000.

The most common lies partners tell about money

Just how likely are couples to commit financial infidelity? In this case, there’s some good news and some bad news.

The bad news is that financial infidelity is very common, with 71% of our respondents having committed at least one instance of it. Broken down by gender, 73% of women and 67% of men had committed some sort of financial infidelity.

The (somewhat) good news is that the most common form of financial infidelity among both genders was deception regarding purchases, which was also what they considered the least severe. The most common money lies, and the percentage of those in each gender that committed one, were: