The CARD Act: The Law That Changed Everything
Before 2009, credit card issuers could raise your interest rate on existing balances for any reason, with 15 days' notice. They could charge late fees exceeding the minimum payment. They could market cards to 18-year-olds on college campuses with free pizza as the hook. The Credit Card Accountability Responsibility and Disclosure Act — the CARD Act — ended most of that. Here's what it protects you from today and where the gaps remain.
What the CARD Act requires
No retroactive rate increases on existing balances
Before the CARD Act, issuers could increase your APR on balances you'd already incurred — a practice called "retroactive repricing." You could borrow at 15% and find out next month the rate was 25%, applied to the money you'd already spent. The CARD Act prohibits this: your APR on existing balances stays fixed unless you're 60+ days late on payments. This single provision is arguably the most important consumer protection in the law.
45-day advance notice of rate changes
Issuers must give you 45 days' notice before increasing rates, changing fees, or making other significant account changes. The pre-CARD Act requirement was 15 days. The additional time lets you adjust your strategy — pay down the balance, transfer it, or close the account before the new terms take effect.
21-day minimum grace period
Your statement must be mailed or delivered at least 21 days before the payment due date. Before the CARD Act, some issuers shortened this window to make it harder to pay on time — generating late fees. The 21-day floor ensures you have adequate time to pay.
Payment allocation protections
If your card carries balances at different APRs (a purchase balance at 20% and a promotional transfer at 0%), payments above the minimum must be applied to the highest-APR balance first. Before the CARD Act, issuers applied all payments to the lowest-rate balance, leaving the high-rate balance growing unchecked. This change directly saves money for anyone carrying multiple balance types.
Fee limitations
Late fees can't exceed the minimum payment amount. Over-limit fees are opt-in only (the issuer must ask if you want to allow transactions that exceed your credit limit, rather than automatically approving them and charging a fee). First-year fees can't exceed 25% of the initial credit limit.
Protections for young adults
Applicants under 21 must have a cosigner or demonstrate independent ability to make payments. On-campus marketing with free gifts (the pizza-for-applications model) is restricted. These provisions aimed to slow the pipeline of credit card debt among college students.
The Schumer Box
The standardized disclosure table — which we explain in detail in our Schumer Box guide — is a CARD Act requirement. Issuers must present rates, fees, and terms in a standardized format before you apply. This is the disclosure that makes comparison shopping possible.
What the CARD Act didn't fix
Variable rates tied to the Prime Rate
The CARD Act restricts arbitrary rate increases, but it doesn't prevent rate increases caused by changes to the Prime Rate. Nearly all credit cards now use variable APRs linked to the Prime Rate — so when the Federal Reserve raises interest rates, your credit card APR increases automatically, with no notice required. This isn't a loophole; it's by design. But it means your APR can rise significantly during rate-hiking cycles without triggering any CARD Act protections.
Penalty APR after 60 days late
The CARD Act allows issuers to impose a penalty APR (typically 29.99%) on both existing and future balances if you're 60+ days late on a payment. The issuer must review and consider lowering the rate after 6 months of on-time payments, but there's no guarantee it will return to your original rate. This is the one scenario where retroactive repricing is still legal.
Deferred interest promotions
"No interest for 18 months" offers from store cards (Best Buy, furniture stores, medical credit cards) are not the same as 0% intro APR offers from bank cards. With deferred interest, if you don't pay the full balance by the end of the promotional period, interest is charged retroactively from the date of purchase on the entire original balance. A $2,000 purchase that's $100 short of payoff at month 18 can generate $500+ in retroactive interest. The CARD Act does not prohibit deferred interest — only requires that it be disclosed. This remains one of the most costly traps in consumer credit.
The cards we feature on CardRank use true 0% intro APR — when the promotional period ends, interest applies only to the remaining balance going forward. Store cards and medical credit cards often use deferred interest, where interest is backdated to day one if any balance remains. These are fundamentally different products with the same marketing language. Always check which type you're getting.
No cap on ongoing APRs
The CARD Act regulates how and when rates can change, but it doesn't cap the rates themselves. Purchase APRs of 28-30% are legal and common for consumers with fair credit. There's no usury ceiling at the federal level for credit cards, and most state usury laws are preempted for nationally chartered banks.
What you should take from this
The CARD Act is the reason your card has a 21-day grace period, your Schumer Box exists, your payments go to the highest-rate balance, and your issuer can't retroactively jack up your rate on a Tuesday. These protections are meaningful and they're working. But the law doesn't protect you from high rates, deferred interest traps, or the automatic rate increases that come with Fed rate hikes. Understanding where the protections end is as important as knowing they exist.