Citi Custom Cash Review 2026: Automatic 5% in Your Top Category

Update, September 2026. The Citi Custom Cash is no longer open to new applicants. Citi stopped accepting applications on May 28, 2026, and its product page has read "Not Available" ever since (checked 2026-08-25). This review stays online for current cardholders and for anyone checking whether the card is still issued: everything below describes the terms that still govern existing accounts, not an offer you can apply for. If you came here for a no-annual-fee card that pays well in one category, the closest card we cover is the Blue Cash Everyday.

Quick answer

The Citi Custom Cash is the best no-annual-fee card for anyone with one dominant spending category. It earns 5% cash back automatically on your top eligible spend category each billing cycle (up to $500 in that category), then 1% on everything else. The 5% rotates with your spending — no activation required, no choosing in advance. Eligible categories include restaurants, gas stations, grocery stores, select travel, transit, streaming, drugstores, home improvement, fitness clubs, and live entertainment.

TL;DR: The Citi Custom Cash Card is a no-annual-fee cash back credit card that automatically earns 5% back on your highest-spend eligible category each billing cycle (up to $500 per billing cycle, then 1%). Eligible categories: restaurants, gas stations, grocery stores, select travel, transit, streaming services, drugstores, home improvement stores, fitness clubs, and live entertainment. Earns 1% on all other purchases. Rewards are issued as Citi ThankYou points (100 TY = $1) convertible to cash or — when combined with a premium Citi card — to airline miles and hotel points.

At a glance

The 10 eligible categories

5% applies to whichever of these 10 categories you spend most in during a billing cycle:

1. Restaurants — dining in, takeout, delivery, fast food
2. Gas stations — all U.S. gas stations (not warehouse clubs)
3. Grocery stores — U.S. supermarkets (not warehouse clubs, not Target/Walmart)
4. Select travel — hotels, car rentals, attractions (not flights, not cruises)
5. Transit — trains, buses, taxis, rideshares, ferries, parking, tolls
6. Streaming — Netflix, Hulu, Disney+, Spotify, Apple TV+, and others
7. Drugstores — CVS, Walgreens, Rite Aid
8. Home improvement stores — Home Depot, Lowe's
9. Fitness clubs — gym memberships, fitness clubs, recreation facilities
10. Live entertainment — concerts, sports events, theater, amusement parks

How the automatic 5% works

At the end of each billing cycle, Citi looks at your spending across all 10 eligible categories. Whichever had the highest spend gets the 5% rate — automatically, with no action required from you.

Example:

• Restaurant spending: $280
• Gas stations: $120
• Grocery stores: $450
• Streaming: $45
• All other: $800

Result: Grocery stores wins with $450 → 5% on $450 = $22.50 in bonus cash back. (If groceries were $520, you'd earn 5% on $500 cap = $25, plus 1% on the remaining $20 = $0.20.)

The $500 cap per billing cycle matters. At exactly $500 in your top category, you max out the 5% earning at $25 per month — or $300 per year in bonus cash back from the top category alone.

ThankYou points vs cash back: the upgrade path

The Custom Cash earns ThankYou points (100 TY = $1 cash back). When used alone, TY points are worth exactly 1¢ each.

The upgrade: If you also hold the Strata Premier (annual fee $95), you can pool your Custom Cash TY points with Strata Premier's TY points and transfer them to airline partners at 1:1, as explained in the Citi ThankYou program guide. This turns your 5% "cash back" into 5x airline miles — which is extraordinary for a no-fee card.

This is the core mechanic of the Citi Trifecta strategy.

Best use cases

Solo use (no Strata Premier):

• Best no-fee 5% card for your single largest spend category
• Use it for gas ($500/month × 5% = $300/year back)
• Or restaurants (avid diner spending $500/month → $300/year back)
• Or streaming + primary grocery card, if a grocery rewards card isn't capping at $6K

Paired with Strata Premier:

• 5x ThankYou miles on your top category (effectively)
• Stack with Strata Premier's 3x on groceries, dining, flights, gas
• Custom Cash beats Strata Premier only on your #1 category; Strata Premier beats it on everything else

In the full Citi Trifecta:

• Custom Cash: 5x on your #1 category
• Strata Premier: 3x on dining, flights, hotels, groceries, gas, EV charging
• Double Cash: 2x (as Citi's base earn card for all other spend)

What the Custom Cash doesn't do

• No foreign transaction fee waiver — 3% fee on international purchases, so don't use it abroad
• $500 cap means this isn't a max-value grocery card — a card with unlimited 3% on groceries will eventually beat it at very high spend levels
• Only one category gets 5% — if you split spend evenly across categories, this card is a poor fit; get the Strata Premier instead for 3x everywhere
• Doesn't earn 5% on flights — flights are not among the 10 categories; use Strata Premier's 3x for flight bookings

Welcome offer value

The $200 welcome offer requires $1,500 spend in 6 months — very achievable. At 5% on your top category plus the $200 bonus, first-year value is typically:

• $200 bonus
• • $150–$300 in annual 5% category rewards
• = $350–$500 first-year value on a no-fee card

Custom Cash vs Discover it Cash Back

The main competitor is the Discover it Cash Back (5% rotating quarterly categories, $1,500/quarter cap); for a head-to-head with the Chase Freedom Flex see our Custom Cash vs Chase Freedom Flex comparison. Key differences:

• Custom Cash: automatic category, no activation
• Discover it: manual activation required each quarter, announced categories may not match your spending
• Custom Cash: 10 fixed categories; Discover it: 4 rotating categories (groceries, restaurants, Amazon, gas, etc.)
• Discover it: 5% on $1,500/quarter = $75 max; Custom Cash: 5% on $500/month × 12 = $300 max per year

For most people, Custom Cash wins because the automatic selection removes cognitive load.

Bottom line

The Citi Custom Cash Card is the simplest, most powerful no-annual-fee card for someone with a clear #1 spending category — see how it stacks up in our best Citi credit cards roundup. It handles itself — you never have to activate, choose, or remember what's earning 5%. Pair it with the Citi Strata Premier to turn that 5% into transferable airline miles, and you have one of the most efficient earning setups in the entire points world at a combined $95 annual fee. The Citi Double Cash rounds out the trio as the 2x catch-all for non-category spend.