"Is this card worth it?" is a question with no general answer, which is why most reviews dodge it. A card that is excellent for someone flying twice a month can be actively expensive for someone who drives to work and carries a balance. The only way to settle it is to put a dollar figure on what the card would do for you over a year, and the math for that is more tractable than it looks.
Everything a Card Does Reduces to Six Numbers
Whatever the marketing says, a credit card affects your finances in six ways over a year. Three of them put money in your pocket, two take it out, and one does either depending on how you use the card.
- Rewards on your spending. What you earn back across groceries, dining, gas, travel and everything else, at whatever rate the card pays for each. This is where category bonuses either matter to you or do not, depending entirely on where your money goes.
- The signup bonus, which lands once, in year one, and only if your spending clears the requirement in the window. More on valuing bonuses →
- Statement credits for travel, rides, streaming and the rest. Worth their face value only to the extent you actually redeem them, which is less often than the marketing assumes. Where the advertised total leaks →
- Lounge access, if the card grants it, worth a great deal to frequent flyers and nothing at all to everyone else. What it is worth per visit →
- Interest, if you carry a balance. At current rates this swamps everything else on the list: a $3,000 balance at 25 percent costs about $750 a year, which no rewards rate will out-earn.
- The annual fee, which is the one number the card is certain to collect.
Add the first four, subtract the last two, and you have what the card is worth to you for the year. That figure is what CardSpec calls Net Annual Value, though the concept is older than the name.
Do the First Year Separately
A signup bonus arrives once and a waived first-year fee applies once, so a card that looks generous in year one may be mediocre in years two and three and beyond.
So we compute the math twice. Year one includes the bonus and whatever fee you actually pay in the first twelve months. Every year after is the steady state: rewards, credits and lounge access against the full fee, with no bonus. If the steady-state number is negative, you are looking at a card worth opening and closing rather than keeping, which is fine, but different from "this card is great".
The Details That Change the Answer
A few key things:
Use your own category mix, not an average one. A card paying 4 percent on dining is worth roughly $480 a year to someone spending $1,000 a month on restaurants and about $60 to someone spending $125.
Check the bonus is reachable before you include it. A bonus requiring $4,000 of spending in three months is worth its full face value if you would clear that anyway, and worth nothing if you don't. You don't get partial credit.
If you carry a balance, start there. Interest is usually the largest number in the sum and the one most sensitive to the card you pick. Someone revolving a balance is generally better served comparing APRs than reward rates. The rewards barely matter at that point.
Discount perks you would not otherwise buy. A credit for something you already pay for is worth its full value. But a credit that only pays out if you spend somewhere you otherwise would not is worth much less, because you had to spend money to get it.
Why a Dollar Figure Beats a Star Rating
The advantage of doing the sum at all is that it forces the trade-offs into the same unit. A card earning you $600 in rewards while costing $700 in fees and interest is not a good rewards card that happens to be expensive. It is a card that costs you $100 a year, and only the math makes that obvious.
It also stops the comparison being a matter of taste. Two cards that both come out at $400 are worth the same to you, whatever the reviews say about which one is more prestigious. And when a card comes out negative, that is a specific, verifiable claim rather than an opinion.
How CardSpec Does It
This is the calculation behind every ranking on the site. You enter what you spend, we run the six-number sum against each card's published terms, and the results sort by the ongoing figure, with a toggle for year one. The order changes as your inputs change. This is the whole point. The rankings are different for a $1,200-a-month spender than for a $6,000-a-month one.