Banks are increasing credit limits by more than $40 billion per quarter, often without their customers’ consent.
New data from the King’s Business School and the Federal Reserve Board suggests this quiet strategy has an agenda, and it’s not in borrowers’ best interests (1).
According to this research, banks initiate four in five credit limit increases, and they’re increasingly using AI to target the most vulnerable customers.
As study author Dr. Agnes Kovacs told Newsweek, banks are increasingly turning to “machine learning and artificial intelligence algorithms to identify the most profitable customers to whom to give limit increases.” With this data, Kovacs argued, banks now “systematically extend additional credit to revolving borrowers,” who generate additional revenue through higher interest payments (2).
While these credit increases may feel like a perk at first, the data increasingly shows they are a major contributor to America’s credit card debt crisis.
American credit card debt already hit a record $1.23 trillion in the third quarter of 2025 (3).
Recent Bankrate data shows 46% of cardholders carry debt, and more than one-quarter of respondents feel there’s no way out (4).
While features of today’s so-called “K-shaped economy,” including inflation, play a role, persistent credit limit increases are directly shaping spending behavior (5).
Kovacs notes that borrowing activity tends to rise sharply in the first few months after a limit increase and continues to climb for up to six months. On average, these increases trigger a 30% rise in revolving balances.
Study authors also link roughly one-third of unpaid credit card balances to credit limit increases. The lower the credit score, the higher this connection appears to be. Rising living costs combined with AI-driven targeting help explain why these increases are having such a devastating impact on overall debt levels.
A higher credit limit doesn’t just offer flexibility. It can also fuel lifestyle creep, where higher spending slowly becomes the norm. Once that happens, high interest rates and revolving balances can trap borrowers in a cycle of minimum payments, rising debt and shrinking savings.
For consumers already under financial pressure, the pattern can feel like “debt steering.” Banks are using algorithms to push customers toward deeper borrowing that generates long-term interest revenue.
To address the issue, the King’s College researchers point to regulatory frameworks already in place in Canada and the UK. In both countries, there face clear restrictions on imposing credit limit increases without customer consent.
If the US adopted similar measures, researchers estimate consumer welfare could rise by about 1% while total revolving credit would decline.
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Because the U.S. currently lacks policies limiting credit increases, consumers need to be proactive.
Most card issuers allow customers the option to disable automatic credit limit increases, but the option is often buried in account settings. If you cannot find it, call customer service and ask to have it turned off.
It’s also important to pay attention to how credit card companies market their services. King’s College researchers found that banks highlighting AI or machine learning reports are more likely to target customers with limit increases (6).
Other red flags include frequent notifications that say “You’re eligible for more credit,” or marketing language that emphasizes “freedom” or “flexibility” rather than your actual financial goals.
For even more control, you can ask your bank to freeze your credit line so it stays locked unless you explicitly request a change. You can also set credit monitoring alerts to notify you of any account updates.
If a higher limit tempts you to spend more, consider adding friction. App-based category limits or cash-envelope budgeting can help rein in problem areas. A money management app can also help you track cash flow, stay within budget and consistently pay down debt.
The key is awareness. By recognizing these potentially risky tactics and responding with deliberate defensive moves, you can make sure a surprise credit limit increase does not turn into a long-term financial setback.
We rely only on vetted sources and credible third-party reporting. For details, see our editorial ethics and guidelines.
Federal Reserve (1); Newsweek (2); New York Federal Reserve (3); Bankrate (4); U.S. Bureau of Labor Statistics (5); King’s College London (6).
This article provides information only and should not be construed as advice. It is provided without warranty of any kind.
