How Banks Make Money on Free Checking Accounts: Fees, Interest, and Swipes
Key takeaways
- Banks lend out checking deposits at 7 to 8 percent or more while paying about 0.01 percent APY, and keep the gap.
- Consumers still paid over $5.8 billion in overdraft and NSF fees in 2023, according to the CFPB.
- Every debit card swipe sends the bank an interchange fee paid by the merchant, not the customer.
Bank buildings look free to enter. The account inside is the product being monetized. Photograph: Acroterion/Wikimedia Commons
Image Credits: Wikimedia Commons
A checking account with no monthly fee sounds like a gift. It is not. Checking accounts are among the most profitable products a bank sells.
Your deposits fund the bank's lending, your mistakes generate fee income, and every card swipe earns a cut from the merchant. This article takes a closer look at free checking, including the interest spread on your deposits, overdraft and account fees, interchange revenue from card swipes, and what the "free" label actually costs you.
The spread: your deposit as an interest-free loan
When you deposit money into a checking account, the bank does not leave it sitting in a vault. It lends the money out to mortgage borrowers, businesses, and credit card holders at much higher rates than it pays you.
The numbers tell the story. Big banks commonly pay about 0.01 percent APY on checking balances, while earning 7, 8 percent, or more on loans funded by those same deposits. That gap between what the bank earns and what it pays you is called the net interest margin.
That margin is enormous at industry scale. U. S.
banks collectively earned $295.6 billion in net income in 2025, up 10.2 percent from the prior year, according to the FDIC Quarterly Banking Profile. Your checking balance is one small brick in that wall.
In other words, the "free" account is really a cheap funding source. The bank rents your money for almost nothing and lends it at full price.
Historic bank architecture. The business model inside has changed less than the buildings suggest. Photograph: Jim Evans/Wikimedia Commons
Image Credits: Wikimedia Commons
Overdraft and account fees
Fees are the second engine. Overdraft fees, non-sufficient funds fees, ATM fees, and account maintenance charges have long been the retail banking cash cow.
The CFPB's 2024 data spotlight reports that consumers paid over $5.8 billion in overdraft and NSF fees in 2023 alone. That is down more than 50 percent from pre-pandemic levels, as regulators pressured banks to reform, but it remains a major revenue line.
The burden falls unevenly. The CFPB found that people who pay more than 10 overdraft fees a year account for nearly three-quarters of all overdraft fees. On average, these frequent overdrafters paid $380 during the year, because a single $35 fee on a small transaction, repeated, is how free checking gets expensive.
Banks once pushed "overdraft protection" hard, and since 2010 consumers have had to actively opt in for debit-card overdraft coverage. If you do not opt in, an overdrawn debit transaction simply gets declined, and no fee is charged. Many account holders never realized that choice existed.
The fee engine may be revving again. The National Consumer Law Center reported that overdraft revenues at the top 20 banks were up 6.2 percent in 2025 versus 2023, with Chase and Wells Fargo each collecting roughly $1 billion a year.
Interchange: the swipe tax
The third engine is invisible to you because someone else pays it. Every time you tap or insert your debit card, the merchant pays a fee, and a slice of that fee goes to your bank.
This is the interchange fee. It is charged to retailers and merchants on each card transaction, flowing through the card networks back to the issuing bank. The 2010 Durbin Amendment capped these fees for large banks, which is one reason big banks grew more aggressive about account fees afterward.
Community banks leaned into it differently. The Financial Brand documented how smaller banks treated interchange as a core part of net interest income, with debit transaction volume becoming a profitability lever for every checking account on the books.
Scale makes small fees big. A couple of cents per swipe across millions of daily transactions turns "free" checking into a volume business. The customer sees $0; the merchant settlement line item tells the real story.
Frequently asked questions
Do banks lose money on free checking accounts?
No. Between the net interest margin on deposits, fee income, and interchange, checking accounts are consistently one of banking's most profitable retail products. "Free" means free of a monthly charge, not free of revenue.
Why do big banks pay only 0.01 percent APY on checking?
Because they can. Depositors value convenience, branches, and apps more than interest, so banks price checking near zero and keep the lending spread. Online-only banks often pay more because they compete on rate instead of branches.
Are free checking accounts really free?
They are free of a stated monthly fee. They are not free of overdraft fees, ATM fees, or the opportunity cost of idle cash earning almost nothing while the bank lends it at 7 to 8 percent.
How can I pay fewer checking account fees?
Decline debit-card overdraft coverage so transactions decline instead of triggering $35 fees. Keep a small buffer in the account, and use your bank's own ATMs.
Compare the fee schedule, not just the word "free. ".
The bottom line
Free checking is profitable three ways: the spread between near-zero deposit rates and high lending rates, billions in overdraft and service fees, and interchange on every card swipe. The account is free the way a free app is free. You are the funding.
The practical move is simple. Treat the fee schedule as the price tag, not the word "free." Keep balances lean, skip overdraft coverage you did not ask for, and let your idle cash earn interest somewhere that actually pays it.
The Federal Reserve building in Richmond. Regulators like the CFPB publish the fee data banks prefer not to advertise. Photograph: Ben Schumin/Wikimedia Commons
Image Credits: Wikimedia Commons
Rive News is the research desk behind these explainers. We verify every claim against public sources before publishing.
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