Scenario
Updated September 1, 2026 · Written by Tim · Calculator-driven, not editor-picked · Methodology v2026.09.1
Here is the trap Costco households fall into: the famous grocery cards — Amex Gold's 4x, Blue Cash Preferred's 6% — earn their bonus at "US supermarkets," and Costco is coded as a warehouse club, not a supermarket. Every dollar of your $600 monthly Costco run earns base rate on those cards. The bigger your Costco habit, the worse the "best grocery card" advice gets.
Our engine treats warehouse-club spend as its own category that only pays a bonus on cards that explicitly earn one there. Rank against this household's real mix — $600 Costco, $300 supermarket top-ups, $250 gas (much of it at the Costco pump) — and the podium looks nothing like a grocery-card list.
Who this fits
Key insight
The winner is the Costco Anywhere Visa at ~$473/yr — the one card in our catalog that names the warehouse: 2% at Costco and Costco.com on top of 4% gas (5% at the Costco pump, on the first $7,000/yr) and 3% dining and travel, at no annual fee beyond the Costco membership you already pay. Citi Strata Premier runs it close at ~$461/yr without earning any Costco bonus — its 3x on the supermarket, dining, gas, and travel spend around the warehouse nearly closes the gap. The flat-2x Capital One Venture (~$405/yr) is third precisely because a flat rate can't be dodged by merchant coding. And Blue Cash Preferred — the "best grocery card" — nets ~$336/yr here: its 6% never touches the $7,200/yr this family spends at Costco.
Ranked by net annual value — rewards minus the full annual fee, counting only credits that arrive automatically — for good-credit applicants.Run your own numbers in the calculator.
$473/yr
net rewards
The only card here that pays a bonus at the warehouse itself: 2% at Costco, 4% on gas — 5% at the Costco pump — on the first $7,000/yr, and 3% on restaurants and travel. Nets ~$473/yr with no card fee (it requires the Costco membership you already have). One honest catch: rewards pay out once a year as a certificate you redeem at Costco — fine for this household, annoying for anyone else.
$461/yr
net rewards
Earns no warehouse bonus at all — and still nearly ties the winner at ~$461/yr, because its 3x covers everything AROUND the Costco run: supermarket top-ups, restaurants, gas stations, travel. If you'd rather have transferable points than a once-a-year Costco certificate, this is the pick, and it costs the household about ~$461/yr versus the winner.
$405/yr
net rewards
2x on every dollar — warehouse included, because a flat rate can't be foiled by merchant category codes. Nets ~$405/yr at a $95 fee. The simplest answer for a household that wants one card everywhere, Costco checkout included (it's a Visa, so it works at the register).
$358/yr
net rewards
4x on gas stations with no annual fee nets ~$358/yr. The no-fee pick if the gas side of the Costco habit is the big one.
$350/yr
net rewards
No warehouse or grocery bonus; it lands here on 3x dining and 2x travel plus solid base earn. Nets ~$350/yr — a reminder that at this spend mix, a good general card beats a miscoded grocery specialist.
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Want the whole field, not just this household? See every grocery card ranked by the same math →
This ranking is fixed against the spending profile above. Drop your own monthly numbers into the calculator and we'll re-rank against your actual spend — same algorithm, different inputs.
Run my own numbersCard data verified against issuer terms. Rates and fees may change — verify on the issuer's site before applying. Rewards values use the point valuations published on our methodology page.
