When you pay more than the minimum on a credit card, federal law tells the issuer where that extra money has to go: to the balance with the highest interest rate first, then the next-highest, and so on down. That is the core of credit card payment allocation under the CARD Act of 2009, codified in Regulation Z. The rule is automatic every billing cycle. Your minimum payment and deferred interest promotions follow different rules, and those exceptions are where most of the confusion lives.
The Minimum Payment Goes Wherever the Issuer Wants
The allocation protection only covers the portion of your payment above the minimum. Pay just the minimum due, and your issuer can send that money to whichever balance it prefers. Most direct it to the lowest-rate balance, because that keeps your expensive debt alive and generating interest.
The effect compounds fast when you carry balances at different rates. A cash advance sitting at 29% can barely move for months while your minimum is quietly reducing a 0% balance transfer. The high-rate balance keeps accruing interest on nearly its full amount the whole time.
Payments Above the Minimum Follow the Highest-Rate-First Rule
Once your payment exceeds the minimum, the CARD Act’s allocation rule takes over. The issuer must apply the excess to the balance carrying the highest annual percentage rate. Anything left after that balance is cleared moves to the next-highest rate, then the next.1eCFR. 12 CFR 1026.53 – Allocation of Payments The calculation happens automatically each cycle. You don’t request it.
A worked example makes it concrete. Suppose your card holds three balances: $2,000 in purchases at 18%, a $500 cash advance at 29.99%, and a $1,000 balance transfer at 0%. Your minimum is $100 and you send in $300. The first $100 covers the minimum, and the issuer can apply it however it likes, most likely to the 0% transfer. The remaining $200 has to go to the 29.99% cash advance, dropping it to $300. Send $700 instead and the entire cash advance disappears, with $100 left over to hit the 18% purchase balance.
Before the CARD Act, issuers commonly applied the full payment to the cheapest balance. Cardholders could pay for years without ever touching a high-rate cash advance.
How the Issuer Picks Which Balances Exist
To split your payment, the issuer needs a snapshot of what you owe at what rates. The rules let it use the balances and rates as of the last day of the prior billing cycle, the day your payment posts, or any day in between. The only requirement is that the issuer be consistent from cycle to cycle.2Consumer Financial Protection Bureau. 12 CFR 1026.53 – Allocation of Payments Interest accrues daily, so the chosen reference date can nudge the numbers slightly.
Trailing Interest on a Balance You Just Paid Off
Even when your excess payment wipes out a high-rate balance, your next statement may show a small interest charge on it. That is trailing interest: the interest that accrued between your statement closing date and the date your payment posted. The allocation rule doesn’t eliminate it. It only guarantees your money goes where it does the most work.
Deferred Interest Promotions Get a Different Rule at the End
Deferred interest promotions, common on store cards, advertise offers like “no interest if paid in full within 18 months.” If any balance remains when the promotional window closes, you owe retroactive interest on the entire original purchase, calculated back to the purchase date. A $3,000 furniture buy at 26.99% deferred interest can produce a surprise charge of $700 or more.
To blunt that cliff, the CARD Act flips the allocation priority during the final two billing cycles of the deferred interest period. In those last two cycles, excess payments have to go to the deferred interest balance first, even if you carry balances at higher rates.1eCFR. 12 CFR 1026.53 – Allocation of Payments Anything left after that balance is covered follows the normal highest-rate-first order.
Two cycles is a narrow window. If you barely paid down a $2,000 promotional balance over 16 months, two months of redirected payments may not clear it. The safer approach is to track the expiration date yourself and hit the deferred balance aggressively long before those final cycles arrive.
Asking Your Issuer to Redirect Payments Earlier
Outside the final two cycles, the standard rule applies. Because a deferred balance is treated as 0% APR for allocation purposes, your excess payments go to any higher-rate balance first, such as a cash advance. You can call your issuer and ask it to send excess payments to the deferred balance sooner. The regulation lets the issuer honor that request but doesn’t require it.1eCFR. 12 CFR 1026.53 – Allocation of Payments Ask, but plan around a no.
Which Accounts These Rules Actually Cover
The allocation rules apply to credit card accounts under open-end consumer credit plans that are not secured by real property.1eCFR. 12 CFR 1026.53 – Allocation of Payments That covers standard consumer credit cards. It excludes business credit cards, which are not consumer credit. It excludes home equity lines of credit, including any card an issuer gives you to draw on a HELOC. Charge cards that require full payment each month generally don’t trigger the rule either, since there is no revolving balance to allocate across.
What Your Statement Has to Show You
Your monthly statement is required to carry a bold Minimum Payment Warning explaining that paying only the minimum means more interest over more time.3eCFR. 12 CFR 1026.7 – Periodic Statement Alongside the warning, the issuer has to show:
- How long it would take to pay off your current balance making only minimum payments, and the total you’d pay over that stretch.
- The fixed monthly payment needed to eliminate the balance in 36 months, the total cost of that path, and how much you’d save compared with paying only the minimum.3eCFR. 12 CFR 1026.7 – Periodic Statement
- A toll-free number for credit counseling services.
The statement should also break out your balances by category, showing purchases, cash advances, balance transfers, and any promotional balances with the interest rate attached to each. That breakdown is how you check the allocation. If you paid $400 above your minimum and your highest-rate balance didn’t drop by roughly $400, look closer.
If Your Issuer Applied the Payment Wrong
Start with a complaint to the Consumer Financial Protection Bureau. You can file online at consumerfinance.gov or call (855) 411-2372. The CFPB forwards the complaint to the issuer, which generally must respond within 15 days, and many allocation errors get fixed at this stage.4Consumer Financial Protection Bureau. Submit a Complaint Keep the statements that show the discrepancy, along with the dates and amounts.
The Truth in Lending Act also creates a private right of action. For individual claims involving open-end credit not secured by real property, a court can award twice the finance charge, with a floor of $500 and a ceiling of $5,000, plus actual damages and reasonable attorney’s fees. Damages can climb higher when the issuer shows a pattern of violations.5Office of the Law Revision Counsel. 15 USC 1640 – Civil Liability