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What 21-month 0% intro APR balance transfer credit cards are out there?

Currently there are no balance transfer credit cards with 0% apr for 21 months.


Top pick for ultra-long intro APR: Citi® Diamond Preferred® Card

21 months

Intro APR on transfers

  • Market-leading 21 months intro APR on transfers and purchases
  • Potentially low revert rate of 13.74%-23.74% variable
  • No annual fee
Apply now

There are two cards available that currently offer a 21-month balance transfer period — the Citi Simplicity® Card and the Citi® Diamond Preferred® Card. Until recently, these cards offered an 18-month intro APR for balance transfers, but now they are again offering a market-leading APR.

Note that the Citi Simplicity® Card reverts to a 14.74% to 24.74% variable APR after the intro period is over. The Citi® Diamond Preferred® Card reverts to a 13.74% to 23.74% variable APR.

21 months is the longest balance transfer offer

We predicted as the economy recovered, these longer APR offers would return. Before Citi bumped their balance transfer offers back up to 21-months, the U.S. Bank Visa® Platinum Card offered the longest intro balance transfer APR at 20 months, reverting to 14.49% to 24.49% variable. Now Citi offers the two cards with the strongest balance transfer offer.

At one point there was even a no-interest credit card for 24 months on the market. But that length for a 0% APR is extremely rare.

If you can’t qualify for a 21-month intro balance transfer, there is still a range of cards that come up just short of 21 months that can still save you hundreds of dollars. A typical balance transfer intro offer is 0% for 15 months, but some cards offer a solid 18-month intro offer.

Compare balance transfer credit cards with long intro APRs

To get the longest intro APR period on balance transfers, you need to have at least a good credit score of 670 or higher. Also, most of these cards have no annual fee but will charge you a balance transfer fee.

Intro APR on balance transfersRevert rate
Citi® Diamond Preferred® Card21 months of 0% intro APR13.74% to 23.74% variable
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Citi® Double Cash Card18 months of 0% intro APR13.99% to 23.99% variable
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HSBC Gold Mastercard® credit card18 months of 0% intro APR13.99% to 23.99% variable
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Citi Simplicity® Card21 months of 0% intro APR14.74% to 24.74% variable
Apply now
Wells Fargo Platinum Card18 months of 0% intro APR16.49% to 24.49% variable
Read review

Compare long 0% intro APR balance transfer credit cards

Name Product Amount saved Balance transfer APR Balance transfer fee Minimum Credit Score Filter values
Citi® Diamond Preferred® Card
0% intro for the first 21 months (then 13.74% to 23.74% variable)
$5 or 5% of the transaction, whichever is greater

Best of Finder 2021

An impressive 21 months intro APR on balance transfers and purchases, as well as no annual fee make this one of the top 0% APR cards available.
Citi Simplicity® Card
0% intro for the first 21 months (then 14.74% to 24.74% variable)
$5 or 5% of the transaction, whichever is greater
With an intro APR of 21 months, this card has one of the longest balance transfer offers on the market. Plus, no late fees and no annual fee.
Citi® Double Cash Card
0% intro for the first 18 months (then 13.99% to 23.99% variable)
$5 or 3% of the transaction, whichever is greater
Get a strong 18 month 0% intro APR on balance transfers AND up to 2% back. This is a rare card that offers both rewards and balance transfers.

Compare up to 4 providers

What is a 21-month balance transfer credit card?

Consider this sort of card as a 21-month interest-free loan to pay off your existing debt. Once approved for a balance transfer card, you can initiate the transfer and start paying off your old balance.

At the end of the introductory period, any unpaid debt from the balance transfer is charged interest at the standard — or revert rate — for that card, which can be between 13% and 27% variable.

Pros and cons of long intro APR cards


  • No annual fee. Almost every balance transfer card comes with a $0 annual fee.
  • Long intro APR period. With up to 20 months of 0% intro APR period, you can pay off large amounts of debt without paying interest.
  • Potential rewards program. Cashback cards typically come with balance transfers, but there are other reward cards as well.


  • Could lose the intro APR period. Some card providers may remove your 0% intro APR period if you’re late on your payments.
  • Balance transfers don’t earn rewards. Even if you have a balance transfer card, you won’t earn any rewards on balance transfers.
  • Balance transfer fees. Almost all balance transfer cards come with a balance transfer fee of either 3% or 5% of the amount.

Bottom line

When they’re available, a 21-month no-interest balance transfer card can give you the time you need to pay off your debt with plenty of wiggle room. Just be sure to budget and pay down your debt within the introductory period. Otherwise, revert rates can catch up to you.

If you still aren’t sure which card is best for you, compare other balance transfer credit cards to find the best option for your financial needs.

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