💳 Balance Transfer Cards

Citi® Diamond Preferred® Card Review

Industry-leading 21-month 0% APR on purchases and balance transfers

4.4/5
Expert Analysis
📅 Updated June 19, 2025
By ClearPick • Trusted by thousands
Citi® Diamond Preferred® Card Review

Citi Diamond Preferred: Maximum Time for 0% Interest

The Citi Diamond Preferred Card offers the longest 0% APR period available in the market at 21 months on both purchases and balance transfers. With no annual fee and straightforward terms, it's designed specifically for those who need extended time to pay down debt or finance large purchases interest-free.

Who This Card Serves:

  • Balance transfer users needing maximum time to pay off debt
  • Large purchase financers wanting extended payment terms
  • Debt consolidators seeking to simplify payments
  • Strategic borrowers who can pay off balances within 21 months

Card Overview

The Citi Diamond Preferred is a utility card focused entirely on providing the longest possible 0% APR period. It lacks rewards but compensates with industry-leading promotional terms and no annual fee.

Citi Diamond Preferred Card Summary
Feature Details
Annual Fee $0
0% APR Period 21 months on purchases and balance transfers
Balance Transfer Fee 3% or $5 minimum
Rewards Rate None
Credit Score Required Good to Excellent (670+)
Foreign Transaction Fee 3%
Credit Limit Varies based on creditworthiness

0% APR Promotional Offer

The 21-month 0% APR period is the card's defining feature, providing unmatched flexibility for debt management and large purchase financing.

21-Month Purchase APR

  • 0% APR on new purchases For 21 months from account opening
  • No purchase fee Unlike balance transfers, purchases have no fees
  • Interest-free financing Ideal for large purchases like appliances or furniture
  • Applies to entire balance All qualifying purchases get the promotional rate

Strategic Advantage: The 21-month period allows you to finance purchases up to $25,000+ and pay them off over nearly two years without any interest charges.

Balance Transfer Terms

Balance transfers also receive the full 21-month promotional period:

Balance Transfer Details
Feature Terms Example Cost
Transfer Fee 3% or $5 minimum $300 on $10,000 transfer
0% APR Period 21 months $0 interest for 21 months
Transfer Window Must transfer within 4 months Act quickly after approval
Transfer Limit Up to credit limit Depends on approved limit
Even with the 3% transfer fee, the 21-month 0% APR period can save thousands in interest compared to keeping balances on high-APR cards.

Ongoing Card Benefits

No Rewards Program

The Citi Diamond Preferred deliberately omits rewards to focus on the promotional APR offer:

  • No cash back 0% earning rate on all purchases
  • No points or miles Pure utility card without rewards complexity
  • Focus on savings Interest savings far exceed typical rewards value

Value Perspective: For someone carrying $10,000 in debt, saving 25% APR interest for 21 months ($4,375) far exceeds any rewards a typical card might offer.

Standard Citi Benefits

The card includes basic Citi cardholder benefits:

  • Citi Identity Theft Solutions Monitoring and resolution services
  • $0 liability protection Protection against unauthorized charges
  • Online account management Full-featured mobile app and website
  • Contactless payments Tap-to-pay functionality

Rates and Fees Structure

Fee Breakdown

Complete Fee Structure
Fee Type Amount Notes
Annual Fee $0 No fee ever
Balance Transfer Fee 3% or $5 minimum One-time fee per transfer
Cash Advance Fee $10 or 5% Whichever is greater
Foreign Transaction Fee 3% Avoid for international use
Late Payment Fee Up to $40 Can be waived for first offense
Over-limit Fee $0 Transactions declined instead

Post-Promotional Interest Rates

  • Purchase APR after promo 16.24% - 26.24% Variable
  • Balance transfer APR after promo 16.24% - 26.24% Variable
  • Cash advance APR 29.24% Variable (immediately)
  • Penalty APR Up to 29.99% Variable

Post-Promo Planning: The regular APR becomes expensive after the promotional period ends. Plan to pay off balances or transfer to another 0% APR card before month 22.

Balance Transfer Strategy

How to Execute Transfers

  • Apply for the card first Get approved and receive credit limit before transferring
  • Gather creditor information Account numbers and balances for all cards to transfer
  • Transfer within 4 months Must complete transfers within promotional window
  • Leave small balances Don't close old accounts; keep them open for credit history

21-Month Payoff Planning

Maximize the promotional period with strategic payments:

Payment Strategy Examples
Transfer Amount Monthly Payment Total Interest Saved vs 22% APR Card
$5,000 $238 $1,155 23% savings
$10,000 $476 $2,310 23% savings
$15,000 $714 $3,465 23% savings
$20,000 $952 $4,620 23% savings
These calculations include the 3% balance transfer fee but still show massive savings compared to keeping balances on high-APR cards.

Competitive Analysis

vs Other 0% APR Cards

0% APR Cards Comparison
Card 0% APR Period Balance Transfer Fee Annual Fee Rewards
Citi Diamond Preferred 21 months 3% $0 None
Wells Fargo Reflect 21 months 3% $0 None
Citi Simplicity 21 months 3% $0 None
BankAmericard 21 months 3% $0 None
Chase Slate Edge 18 months $0 (15 months) $0 1.5% after year 1

Market Leadership

The Citi Diamond Preferred ties for the longest 0% APR period available:

  • Tied for longest period at 21 months with several competitors
  • Standard 3% transfer fee matches industry norms
  • No annual fee keeps costs minimal
  • Established bank backing with reliable customer service

Competitive Landscape: Since multiple cards offer 21-month periods, choose based on bank relationship preferences, customer service reputation, and approval likelihood.

Pros and Cons

✅ Pros

  • Industry-leading 21-month 0% APR on purchases and transfers
  • No annual fee keeps costs minimal
  • Simple, straightforward terms without complexity
  • Substantial interest savings potential for debt payoff
  • Established Citi banking with reliable customer service
  • No penalty for paying off early unlike some loan products

❌ Cons

  • No rewards program of any kind
  • 3% foreign transaction fees expensive for international use
  • High post-promotional APR up to 26.24%
  • Standard balance transfer fee at 3%
  • Limited ongoing value after promotional period

Who Should Apply

Ideal Candidates

  • High-interest debt carriers Currently paying 20%+ APR on credit card balances
  • Large purchase planners Need to finance appliances, furniture, or home improvements
  • Debt consolidators Want to simplify multiple payments into one
  • Strategic borrowers Can commit to paying off balance within 21 months
  • Good to excellent credit Likely to qualify for the best promotional terms

Better Alternatives If

  • You want rewards → Consider cashback cards after paying off debt
  • You travel internationally → Cards with no foreign fees
  • You have fair credit → Secured cards or credit builders might be better
  • You can't pay off in 21 months → Consider longer-term loan products

Application Strategy

Optimal Application Timing

  • When you have debt to transfer Apply only when you have specific balances to move
  • Before major purchases Get approved before you need to finance large expenses
  • When credit score is highest Apply during periods of good credit health
  • With realistic payoff plan Only apply if you can pay off balance in 21 months

Approval Factors

Citi typically looks for these qualifications:

  • Credit score 670+ Good to excellent credit typically required
  • Stable income Ability to handle transferred debt payments
  • Low debt-to-income ratio Room in budget for new payment obligations
  • Clean payment history No recent late payments or derogatory marks

Final Verdict

The Citi Diamond Preferred Card excels in its specific niche: providing maximum time to pay off debt or finance purchases interest-free. The 21-month promotional period ties for the longest available, and the no annual fee structure keeps costs minimal.

This card makes financial sense for anyone carrying high-interest debt who can realistically pay it off within 21 months. The interest savings often amount to thousands of dollars, far exceeding any rewards value from other cards. However, it's purely a utility card with no long-term value after the promotional period.

Bottom Line: Excellent choice for debt consolidation and large purchase financing, offering industry-leading promotional terms. Not suitable for those wanting ongoing rewards or long-term card benefits.

Apply for This Card If You:

  • Have high-interest debt you can pay off in 21 months
  • Need to finance a large purchase interest-free
  • Want to simplify multiple payments through consolidation
  • Have good to excellent credit for approval

Card Specifications

Annual Fee $0
0% APR Period 21 Months
Balance Transfer Fee 3%
Rewards Rate None
Foreign Transaction Fee 3%
APR After Promo 16.24% - 26.24%