Comparison brief
Amex Blue Cash Preferred vs. Citi Custom Cash
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Citi stopped accepting new Custom Cash applications on May 28, 2026, so this comparison is most useful for existing Custom Cash holders deciding whether to add a Blue Cash Preferred, not for someone choosing between the two from scratch. Blue Cash Preferred earns a flat 6% on groceries up to $6,000/year; Custom Cash auto-selects your single highest-spend eligible category each month for 5% up to $500/month.
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