Cardinal One Cashback Card review: the 5% headline lasts about six weeks
The introductory rate is real. What happens in month four is the part the landing page never mentions.
- Published
- Last re-tested
- (2 months ago)
- Next review
- (in 44 days)
- Reading time
- 9 min
No affiliate links in this review
This review previously contained affiliate links. They were removed when the verdict was downgraded, and I earn nothing from it today.
Full disclosure policyCardinal One advertises 5% cashback. For the first two statement cycles that is exactly what I received. From cycle three the rate on my largest category silently fell to 1%, because the 5% tier is capped at $500 of spend per quarter and the cap is disclosed in a footnote rendered at 10px. Across four cycles my effective rate was 1.6%, against a 5% headline.
What works
- Application decision in under 4 minutes, card in hand in 6 days
- The 5% rate is genuinely paid — until the quarterly cap is hit
- Cashback posts automatically as a statement credit, no redemption friction
What does not
- Effective rate across 4 cycles was 1.6%, not the advertised 5%
- $500/quarter cap on the headline rate is a footnote, not a headline
- Category definitions changed mid-test with 30 days' notice by email only
- $95 annual fee from year two is not shown on the primary landing page
- Closing the card required a phone call and a 14-minute retention script
Buy it if
- Someone who will spend exactly $500 per quarter in the bonus category and then stop
Skip it if
- Anyone who wants their headline rate to be their actual rate
- People who will forget to cancel before the year-two fee
The measurement
I carried this card for 129 days and put $6,840 through it. Cashback earned was $109.44. That is an effective rate of 1.6%. The card is advertised as paying 5%.
Swipe the table sideways for the remaining columns
| Cycle | Spend | Cashback | Effective rate |
|---|---|---|---|
| Mar–Apr 2025 | $1,910 | $71.20 | 3.7% |
| Apr–May 2025 | $1,640 | $24.10 | 1.5% |
| May–Jun 2025 | $1,720 | $8.60 | 0.5% |
| Jun–Jul 2025 | $1,570 | $5.54 | 0.4% |
Why the rate collapses
The category change
On 2 June 2025, mid-test, Cardinal moved 'streaming and digital subscriptions' out of the bonus categories. Notice was a single email with the subject line 'Updates to your Cardinal One account', sent to the address on file. No in-app notification, no notice on the statement. This is compliant with the cardholder agreement. It is also the reason cycle three fell off a cliff.
Why there are no affiliate links on this page
There were, for eleven days after first publication. When I finished reconciling cycle four and the effective rate landed at 1.6%, I downgraded the verdict to not-recommended and removed the links the same day. I am not willing to earn a commission on a card I am telling you not to get. The removal cost roughly $2,100 in forecast revenue over the following year, which I mention only because you should know what the incentive was and which way I resolved it.
Verdict
Not recommended. Not because the card is a scam — every term is disclosed somewhere — but because the gap between the advertised number and the number that lands in your account is a factor of three, and the design of the page is what creates that gap. A flat 2% card with no categories and no caps will beat this for almost everyone.
Regulated category — risk notice
Changelog
Every change to this review since first publication, including the ones that lowered the score. Corrections are logged here, never made silently.
Confirmed the $500 quarterly cap and $95 year-two fee are unchanged. Re-verified that the landing page still shows '5%' above the fold with the cap below it.
Cardinal added the cap to the comparison table on their pricing page. Footnote on the main landing page unchanged. Score raised 4.5 → 4.8.
Affiliate links removed after verdict was downgraded. Disclosure updated.
First published after 129 days and four statement cycles.
Sources
Each source is recorded with the date it was read, because vendors change terms pages without notice.
- Cardinal One cardholder agreement (PDF, v2025.2) — accessed
- Category change notice email, 2 June 2025 — accessed