How do I tell if an offer is deferred interest or true 0% APR?

Look for the word 'if' in the disclosure. 'No interest if paid in full within X months' is deferred interest. '0% introductory APR for X months' is a true 0% offer. Also check the Schumer Box: deferred interest offers will explicitly state 'If the balance is not paid in full by the end of the promotional period, interest will be charged from the purchase date.'

Does deferred interest accrue every month or only at the end?

It accrues every month, silently. The interest is calculated and tracked from day one. If you pay the balance in full by the deadline, the issuer waives the accrued amount. If you do not, all of it is added to your balance in one charge, called a deferred interest charge.

Can I avoid the trap by paying $1 less than the full balance?

No. Even $1 of leftover balance triggers the entire deferred interest. The original purchase amount is what interest is calculated on, not the leftover. This is the single most counter-intuitive thing about deferred interest.

What if I am already in a deferred interest plan?

Calculate the days until the promo ends and how much you owe. If you can pay it in full by the deadline, do whatever it takes (extra payments, side income, family loan). If you cannot, transferring the balance to a true 0% APR card before the deadline can save you the deferred interest charge entirely (the 3 to 5 percent BT fee is much smaller).

Deferred Interest vs 0% APR: The Trap That Costs Hundreds (2026)

The 30-second version

Deferred interest accrues silently during the promo. Pay in full by the deadline and it gets waived. Leave $1 unpaid and the entire accrued amount is charged retroactively, on the original purchase price, at typically 27 to 31 percent APR. A bank-issued 0% APR card works differently: only the leftover balance accrues, and only from day one of the next month.

Side by side

Waived versus deferred interest

Waived interest (most bank credit cards)

During the intro period, no interest accrues at all. If a balance remains at the end, interest starts accruing on that remaining balance from day one of the next month at the card's regular APR. Manageable, predictable, recoverable.

Deferred interest (most store cards, CareCredit, some Amazon offers)

Interest accrues silently throughout the promo at the card's regular APR (typically 26 to 31 percent). If you pay the full original purchase amount by the deadline, the accrued interest is waived. If you pay even $1 less, all of the accrued interest is charged retroactively, on the original purchase price, in one bill.

The real-money math

$5,000 purchase, two outcomes

Below: dollar impact of leaving $1 unpaid at the end of a typical 12 month deferred interest promo at 26.99 percent. The waived interest column shows what a true 0% APR card would charge in the same situation. The math goes from a rounding error to a meaningful chunk of the purchase price.

Original purchase	Waived interest leftover	Deferred interest charge
$2,000	$0	$540
$3,000	$0	$810
$5,000	$0	$1,350
$8,000	$0	$2,160
$12,000	$0	$3,240

The CFPB data

1 in 5 consumers gets caught

The Consumer Financial Protection Bureau's research has consistently found that around 20 percent of deferred-interest promotions end with an unpaid balance and a retroactive interest charge. With millions of these promotions issued every year (Home Depot, Lowe's, Best Buy, CareCredit, and others), that is millions of consumers paying interest they thought they had avoided.

Who uses deferred interest

Retailers and lenders to watch

Card	Promo type	Regular APR	Deferred interest?
Home Depot Consumer Card	Deferred 6 to 24 months	Around 26.99% to 29.99%	Yes
Lowe's Advantage Card	Deferred 6 to 24 months	Around 26.99% to 31.99%	Yes
Best Buy Visa / Store Card	Deferred 6 to 24 months on select items	Around 28.49%	Yes
Amazon Store Card (select offers)	Deferred 6 to 24 months on Prime items	Around 30.99%	Yes
Wayfair Credit Card	Deferred 12 to 18 months	Around 27.99%	Yes
CareCredit	Deferred 6 to 24 months	Around 26.99%	Yes
Bank-issued 0% APR card	Waived 0% for 15 to 24 months	Around 17% to 30%	No

Spot the difference

How to tell at the application page

Deferred interest language

"No interest if paid in full within 12 months"
"Special financing"
"Equal monthly payments"
"Promotional financing"

True 0% APR language

"0% introductory APR for X months"
"0% intro APR on purchases for X months from account opening"
"After that, regular variable APR of A% to B%"

When store cards still make sense

Edge cases worth considering

Store cards are not always wrong. They make sense when:

You will absolutely pay in full (and you mean it)
The store card unlocks a discount at purchase (e.g. 10 percent off)
The purchase is small ($500 or less, where the deferred risk is minimal)
You have a high-yield savings account with the funds already set aside

For everything else over about $1,000, a true 0% APR card is the safer pick. The benefit of the discount or convenience rarely outweighs the asymmetric downside.

Keep reading

Deferred interest vs 0% APR: the difference that could cost you hundreds