Citi Double Cash® Card

You earn 1% when you buy and another 1% when you pay it off. The total is 2% with no categories and no cap — matching Wells Fargo Active Cash, PNC Cash Unlimited and TD Double Up at the top of the flat-rate group here.

The split has a real consequence: the second 1% only arrives when you actually pay. A balance you never clear earns half rate, which quietly aligns the rewards with the only way a cash-back card is ever profitable for the holder. It's an unusual piece of product design in that it's honest about what it rewards.

0% intro APR for 18 months on balance transfers is the longest of any rewards card in this catalog. Chase Slate and Wells Fargo Reflect run to 21 months but pay nothing at all; every other rewards card here tops out at 15 months or 15 billing cycles.

That combination is rare and useful: a card that can clear an existing balance over a year and a half and then stay in your wallet permanently as a 2% earner. Most balance-transfer cards become dead weight once the balance is gone. This one doesn't.

The go-to rate is 17.49% to 27.49%, and note the intro period covers balance transfers rather than purchases — spending on the card during those 18 months is not automatically interest-free.

The 18-month window and the 2% rate pull on the same balance in opposite directions, and which one wins is settled by a figure this catalog does not carry verified: what Citi charges to move the balance across. A transfer fee is taken once, up front, on the whole amount — so on a $6,000 balance it is a three-figure sum before a single month of 0% has done anything for you. Against that, 2% on $1,500 of monthly spending returns $30 a month. The fee is therefore worth several months of everything this card earns, and it is the first thing to read on Citi's disclosure rather than the last.

That is not an argument against the transfer. It is the reason the 18 months matter: the fee is fixed and the interest saved grows with every month of the window, so a long window is what turns a one-off cost into a good trade. A 15-month card at the same fee has three fewer months to earn it back, which is the practical difference between this card and most of the flat-rate group here.

The catalog carries one rate above the flat 2% on this card: 5% on hotels, car hire and attractions booked through Citi Travel, Citi's own portal. It is the same structural caveat as every portal rate in this catalog — the multiple lives inside the issuer's booking channel, so the comparison is not 5% against 2%, it is 5% on the portal's price against 2% on whatever you would have paid booking direct.

For a card whose entire argument is that it has no categories to track, the portal rate is best treated as a footnote rather than a feature. The reason to hold this card is the line that applies to everything else you buy, and that line is 2%.