The core difference at a glance
This is one of the clearest grocery-spender break-even decisions in the cash-back market.
| Quick verdict | Best fit |
|---|---|
| Pick Amex Blue Cash Preferred® if | Choose Blue Cash Preferred if you spend $400+/month at US supermarkets - the 6% rate (vs Citi's 2%) more than offsets the $95 fee. |
| Pick Citi Double Cash® Card if | Choose Citi Double Cash if your grocery spend is under $400/month or you shop at Costco/Walmart (not counted as supermarkets). |
Blue Cash Preferred is a category specialist. It is designed for households with real supermarket volume, plus some streaming and gas value on top. If your grocery budget is large enough, the extra rewards can outpace the annual fee comfortably.
Citi Double Cash is the simpler control option. It removes the question of whether a purchase codes correctly and gives you 2% everywhere, every time, with no annual fee.
The difference is not subtle: Blue Cash Preferred is stronger for people with concentrated U.S. supermarket spend. Citi Double Cash is stronger when spending is broad, warehouse-heavy, or too small in bonus categories to justify a fee card.
Amex blue cash preferred® vs citi double cash® card: key numbers
| Metric | Amex Blue Cash Preferred® | Citi Double Cash® Card |
|---|---|---|
| Annual fee | $95/yr (waived yr 1) | $0 |
| Regular APR | 19.24–29.99% variable | 19.24–29.24% variable |
| Reward rate | 6% US supermarkets (to $6k/yr), 3% gas, 1% other | 2% on everything |
| Welcome bonus | $250 after $3,000 in 6 mo | $200 after $1,500 in 6 mo |
| Min. credit | Good–Excellent (670+) | Good–Excellent (670+) |
| Best for | High grocery spenders who shop at US supermarkets | People who want broad 2% with no annual fee |
Amex blue cash preferred®: pros and cons
What amex blue cash preferred® does well
- 6% at U.S. supermarkets is an enormous gap over a 2% flat-rate card.
- 3% gas helps households with meaningful driving spend.
- The first-year fee waiver reduces risk while you test whether the card fits your budget.
Where amex blue cash preferred® falls short
- The annual fee matters after year one.
- Costco, Walmart, and many warehouse or superstore purchases do not qualify as U.S. supermarkets.
- Grocery rewards are capped at $6,000 per year in supermarket spend.
Who amex blue cash preferred® is best for
It is best for households spending at least a few hundred dollars per month at qualifying U.S. supermarkets and wanting one card that leans hard into groceries.
Citi double cash® card: pros and cons
What citi double cash® card does well
- The 2% flat rate applies everywhere, so there is no coding uncertainty.
- No annual fee makes it easier to keep long term.
- It remains strong even when your spending mix changes.
Where citi double cash® card falls short
- It cannot compete with a true grocery specialist when supermarket spending is high.
- It gives up category upside in gas and streaming too.
- It is better as a baseline card than a category-maximizer card.
Who citi double cash® card is best for
It is best for people with moderate or low grocery concentration, shoppers who use warehouse clubs heavily, and anyone who wants one no-fee card that stays useful everywhere.
Which card wins for your spending style?
These examples use cash-equivalent reward math and apply Amex's supermarket cap where relevant.
Scenario 1: heavy traveller ($3,000/mo, 60% on travel and dining)
Assume little qualifying supermarket spend and broadly mixed transactions.
| Card | Annual reward value | Minus annual fee | Net annual value |
|---|---|---|---|
| Amex Blue Cash Preferred® | (($300 × 12) × 1%) + (($200 × 12) × 3%) + (($2,500 × 12) × 1%) = $432 | $432 - $95 | $337 |
| Citi Double Cash® Card | (($3,000 × 12) × 2%) = $720 | $720 - $0 | $720 |
Winner: Citi Double Cash® Card
Scenario 2: everyday spender ($2,000/mo, mixed categories)
Assume $450 at U.S. supermarkets, $150 gas, and $1,400 other per month.
| Card | Annual reward value | Minus annual fee | Net annual value |
|---|---|---|---|
| Amex Blue Cash Preferred® | (($450 × 12) × 6%) + (($150 × 12) × 3%) + (($1,400 × 12) × 1%) = $678 | $678 - $95 | $583 |
| Citi Double Cash® Card | (($2,000 × 12) × 2%) = $480 | $480 - $0 | $480 |
Winner: Amex Blue Cash Preferred®
Scenario 3: occasional traveller ($1,500/mo, mostly groceries and gas)
Assume $700 at U.S. supermarkets, $300 gas, and $500 other per month. Grocery rewards are capped at $6,000 annually, so only $6,000 earns 6%.
| Card | Annual reward value | Minus annual fee | Net annual value |
|---|---|---|---|
| Amex Blue Cash Preferred® | ($6,000 × 6%) + (($2,400) × 1%) + (($300 × 12) × 3%) + (($500 × 12) × 1%) = $552 | $552 - $95 | $457 |
| Citi Double Cash® Card | (($1,500 × 12) × 2%) = $360 | $360 - $0 | $360 |
Winner: Amex Blue Cash Preferred®
Bottom line: which should you choose?
Choose Blue Cash Preferred if your supermarket budget is large, stable, and mostly goes to qualifying U.S. grocery stores. It can beat Citi by a wide margin in that profile.
Choose Citi Double Cash if your grocery spend is lower, less predictable, or concentrated in warehouse clubs and superstores. Its 2% everywhere is harder to misuse.
| Quick verdict | Best fit |
|---|---|
| Pick Amex Blue Cash Preferred® if | Choose Blue Cash Preferred if you spend $400+/month at US supermarkets - the 6% rate (vs Citi's 2%) more than offsets the $95 fee. |
| Pick Citi Double Cash® Card if | Choose Citi Double Cash if your grocery spend is under $400/month or you shop at Costco/Walmart (not counted as supermarkets). |