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CardCurator — Rewards Intelligence
Card Comparison

Citi Diamond Preferred vs Platinum

Side-by-side comparison of fees, rewards, benefits, and transfer partners.

Citi Diamond Preferred card art
Citi ThankYou Points
Citi Diamond Preferred
Citi
More Info
Platinum card art
Navy Federal Credit Union
Platinum
Navy Federal Credit Union
More Info
Annual Fee
No annual fee
No annual fee
Foreign Fees
3%
None
Signup Bonus
None
None
Top Earn Rates
1x base rate
  • All Purchases 1x
Reward Type
cashback
credit building
Key Credits
None
None
Transfer Partners
  • AAdvantage
  • AAdvantage
  • Aeromexico Club Premier
  • Aeromexico Club Premier
  • Accor Live Limitless
  • +35 more
No transfer partners
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Common Questions: Citi Diamond Preferred vs Platinum

Is the Citi Diamond Preferred or Platinum better for dining?

Neither card offers a specific dining bonus — both earn their base rate on restaurant purchases.

Which has the higher signup bonus in 2026?

Neither card has a current public signup bonus. Check the issuers' sites for any targeted offers.

Which card is better for international travel?

Platinum charges no foreign transaction fees — the better pick for international use. Citi Diamond Preferred charges 3% on foreign purchases.

Can I hold both the Citi Diamond Preferred and the Platinum?

In most cases yes — holding both is allowed and can be a smart strategy for maximizing rewards across different spending categories. Citi Diamond Preferred is from Citi and Platinum is from Navy Federal Credit Union, so they're governed by separate bank policies.