Pennsylvania – Some say it’s as much a form of deception as having an extra-marital affair… cheating on them financially.

A new survey from CreditCards.com shows that 1 in 5 people who are either married or living with a partner have a checking account, a savings account or a credit card that their spouse doesn’t know about.

Ted Rossman from CreditCards.com says it’s a big deal because it can take a big bite out of the household finances if you don’t know what’s going on.

The survey says Millennials are more likely to commit financial infidelity than Baby Boomers.

People in the South and West were more likely to have a secret account than those in the Northeast and Midwest.

Click Here to see the full survey.

Listen to the full interview.