Research
A deferred-interest promotion charges no interest if the full promotional balance is paid by the deadline; if any balance remains, interest is charged from the original purchase date on the full promotional amount. The CFPB found that consumers paid about $1 billion in deferred interest on healthcare purchases from 2018 through 2020, and that roughly 20% of deferred-interest healthcare purchases were assessed interest.
Deferred interest is the mechanism behind offers worded "no interest if paid in full within 6, 12, 18 or 24 months." Interest accrues from the purchase date at the account's standard rate but is not charged if the promotional balance is paid in full before the period ends. If any balance remains at the deadline, the accrued interest for the whole period is added to the account.
Two features matter in practice. First, the required minimum monthly payment may not be enough to pay off the balance in time; paying only the minimum can leave a balance at the deadline. Second, the interest that lands is calculated on the original promotional purchase amount, not on what is left.
This is different from a waived-interest or 0% APR promotion, where missing the deadline means interest starts going forward rather than being charged back to day one. The two are often described with similar phrases at the counter.
In May 2023 the Consumer Financial Protection Bureau published a study of medical credit cards and financing plans, drawing on data it requested from issuers. Its findings, for healthcare purchases in 2018 through 2020:
The CFPB's data covers healthcare broadly. The report's product sample includes cards accepted for veterinary care; it does not break out veterinary purchases separately.
CareCredit is a credit card issued by Synchrony Bank, accepted at more than 285,000 locations across health and wellness categories including veterinary care, per CareCredit. From its own FAQ and financing pages, checked September 9, 2026:
Existing cardholders' terms may differ; CareCredit directs them to their card agreement. Promotional options offered vary by practice.
Consider a $2,000 purchase on a 12-month deferred-interest promotion at the published 32.99% purchase APR. Paying about $167 a month clears the balance in time and no interest is charged. Paying only a required minimum that does not retire the balance leaves an amount outstanding at month twelve, and the accrued interest on the full $2,000 for the year, roughly $600 to $700 depending on the payment pattern, is added to the account. This example uses CareCredit's published rate; the exact figure depends on the account's terms and payment allocation. It is an illustration of the mechanism, not a quote.
Deferred-interest products are a real way to pay for people who retire the balance on time. What the CFPB data adds is a base rate: about one in five deferred-interest healthcare purchases ends up paying the deferred interest. The deadline and the minimum-payment trap are the two mechanics behind that gap.
Arclo is not a lender and does not make credit decisions. Arclo is unaffiliated with CareCredit and Synchrony Bank. Figures attributed to CareCredit are taken from its published pages on the date shown and may change; check carecredit.com for current terms.