Deferred Interest vs 0% APR - The Difference That Could Cost You Hundreds
Updated 11 April 2026
This is the most important distinction in credit card financing. Store cards use deferred interest. Bank cards use waived interest. Understanding the difference could save you thousands.
The Critical Distinction
Waived Interest (Bank Cards)
Interest is genuinely waived during the intro period. If any balance remains when the period ends, interest accrues only on that remaining amount going forward.
Example: $5,000 purchase, $200 remains after 21 months. Interest starts on $200 only. At 22% APR, that is $3.67/month.
Found on: Visa, Mastercard, Amex from major banks
Deferred Interest (Store Cards)
Interest accrues silently throughout the entire promotional period. If any balance remains when the period ends, ALL accrued interest is charged retroactively on the original purchase amount.
Example: $5,000 purchase, $200 remains after 24 months. You are charged $2,699 in retroactive interest on the original $5,000, not just the $200.
Found on: Home Depot, Lowe's, Best Buy, CareCredit
The Scale of the Problem
20% of deferred interest promotions are not paid off in time.
According to CFPB (Consumer Financial Protection Bureau) data, one in five consumers with deferred interest promotions fails to pay off the balance before the promotional period ends. That means millions of consumers are hit with retroactive interest charges annually. The total amount of retroactive interest charged on deferred interest plans runs into billions of dollars per year.
How to Spot Deferred Interest
The phrasing in the offer tells you everything. Look for these exact words:
Deferred Interest Language
"No interest IF paid in full within 24 months"
The word "if" is the red flag. This means interest is deferred, not waived.
True 0% APR Language
"0% introductory APR for 21 months"
No conditions. The 0% rate is applied regardless of your remaining balance.
Always check the Schumer Box (the required disclosure table) in the card application. The interest type is disclosed there, though the language can be dense.
Retailers That Use Deferred Interest
| Card | Promo Periods | Regular APR | Interest Type |
|---|---|---|---|
| Home Depot Consumer Card | 6, 12, 24 months | 29.99% | Deferred interest |
| Lowe's Advantage Card | 6, 12, 24 months | 26.99% | Deferred interest |
| Best Buy Visa | 6, 12, 18, 24 months | 27.99% | Deferred interest |
| Amazon Store Card | 6, 12, 24 months (select items) | 29.99% | Deferred interest |
| Wayfair Credit Card | 6, 12 months | 31.99% | Deferred interest |
| CareCredit | 6, 12, 18, 24 months | 26.99% | Deferred interest |
Real Dollar Comparisons
What happens if $1 remains at the end of the promotional period. Deferred interest at 26.99% vs true 0% APR:
| Purchase Amount | Deferred (12 mo) | Deferred (24 mo) | True 0% APR (per month after) |
|---|---|---|---|
| $2,000 | $540 | $1,080 | $3/mo on remaining $1 |
| $5,000 | $1,350 | $2,699 | $8/mo on remaining $1 |
| $8,000 | $2,160 | $4,319 | $13/mo on remaining $1 |
| $12,000 | $3,239 | $6,479 | $20/mo on remaining $1 |
Deferred interest calculated at 26.99% APR on the full original purchase amount. True 0% APR shows forward-only interest on a hypothetical $1 remaining balance at 22% APR.
When Store Cards Still Make Sense
Store cards are not always bad. They can make sense in specific situations:
- ●The purchase is small ($500 or less) and you can pay it off in 3-6 months with certainty. The risk of retroactive interest on $500 is manageable.
- ●The store card offers an upfront discount (Home Depot: 5% off all purchases) that exceeds any potential interest risk.
- ●You are buying something from that store regularly and the ongoing rewards justify having the card, separate from the financing offer.
Our recommendation: For any purchase over $1,000, a true 0% APR card is almost always the safer choice. The risk of retroactive interest far outweighs any store card perks.
Find a true 0% APR card
All 8 cards in our comparison table use waived interest, not deferred.