How We Calculate Your Rewards (Methodology)

Card Strategist estimates the rewards you'd earn on every card in your wallet — without linking a single bank account. It's a careful, good-faith attempt from the data we have, not a perfect calculation: some things we deliberately leave out, and some come down to how you actually spend and live. Here's exactly how the numbers are produced, where they're cautious, and where your own judgment still matters most.

Our estimates lean conservative on purpose

When we can model a reward precisely, we do. When we can't, we lean toward under-counting rather than guessing high. That's a deliberate choice: an estimate you can verify against the issuer — and that doesn't over-promise — builds trust.

We're not claiming the number is a guaranteed floor. To keep estimates useful we do assume you'll realize some statement credits, and travel categories in particular can carry card-specific rules that shift your real earnings up or down. What we're promising is a bias toward caution, not a lower bound you're certain to beat.

What our estimates may not include

To keep that promise, we leave a handful of hard-to-model perks out of the math rather than risk overstating them. Most of these mean your actual earnings could be higher than we show; a couple (travel fine print, how categories are defined) can go either way. Where they apply:

Limited-time promotions. Short-lived elevated rates (e.g. a "5x on rides through September" deal) expire and vary too much to model reliably, so we credit the card's everyday rate instead.
Fine print on travel rates and credits. We do model issuer travel-portal earn rates where a card offers them. What's harder to capture is the conditions attached: a travel credit that only counts when you book through the issuer's own portal (e.g. Capital One's $300 travel credit), or an elevated travel rate that only applies to airfare booked through the issuer's travel portal or directly with the airline — but not third-party sites like Expedia (e.g. the Amex Platinum 5x on flights). We generally credit the rate that applies to ordinary spend, so your earnings on these specific bookings may differ from our estimate.
How categories are defined. We don't cover every possible spending category, and issuers don't agree on what falls into each one. Whether "entertainment," "communications," or even "travel" includes a given merchant — and whether transit or rideshare counts as travel — varies by card. We use reasonable mappings, but a specific purchase may be categorized differently by your issuer.
Very-high-spend perks. Bonuses and statuses unlocked only after tens of thousands of dollars of annual spend on a single card touch very few people, so they're shown as notes rather than folded into your estimate.
Single-retailer & store-brand bonuses. Extra points at one specific merchant (a chosen retailer, or an airline/hotel card earning on its own brand) don't map cleanly to a spending category, so we credit only the base rate on that spend.
Rotating quarterly categories. Cards with 5% categories that rotate each quarter (and that you have to activate) appear in our catalog, but we don't factor their rotating bonus into rankings or recommendations. The eligible categories change every quarter, so crediting a fixed 5% would misstate what you'd actually earn — we credit the card's base rate instead.
Certain redemption floors. A few cards have card-specific minimum redemption values that only matter for cash-preference holders of those exact cards; where the difference is tiny we leave it out.

We keep an internal registry of every one of these gaps and which direction each one pushes the estimate, so our omissions stay biased toward caution. Some of them — like rotating quarterly categories — we may simply leave out for the foreseeable future rather than model imperfectly.

How the math actually works

You enter your spending — we never see your accounts. No bank linking, no card numbers, no aggregation. You tell us roughly what you spend where, and which cards you hold.
We run every card in our current catalog against your profile. For each spending category we work out the best-earning card, at each card's real points value.
You decide what your points are worth. Choose a straight cash-back view or a maximize-value view, and optionally set your own per-program values on top. The estimate recalculates around whatever valuation you pick — including a single default rate if that's what you prefer.
Catalog data is current as of July 2026. Card terms change often; we refresh the catalog regularly, but the issuer is always the final word.

The math is a starting point, not the whole decision

Rewards are as much about behavior and context as they are about math — and we can only model the math. We make the best attempt we can from the data available, but there's a lot we can't see and shouldn't pretend to.

A card might come out ahead on paper and still be the wrong call for you. Maybe the winner earns its edge inside an ecosystem you'd rather not join for the sake of a few thousand extra points a year. Maybe you'll happily accept slightly lower rewards for a card with better travel or purchase protection, a smoother app, or a lounge you actually use. Those are real, legitimate reasons — they're just not things a rewards calculator can weigh for you.

So treat our numbers as a well-researched starting point for your own judgment, not a verdict. The best card is the one that fits how you actually spend and live.

Fee and bonus dates are reminders, not exact deadlines

When you tell us when you opened a card, we estimate two timing signals: roughly when its next annual fee will post, and roughly how long you have to meet a sign-up-bonus spending requirement. Both are derived from your open date plus the card's typical terms — so an annual-fee date we estimate this way is shown with a "~", and a bonus window is our best guess at the deadline, not the issuer's official one.

Treat them as a nudge to go check, not the last word. Issuers set these dates precisely — often from your exact approval date — so they can differ from our estimate by days or weeks, and missing a real annual-fee or bonus deadline has real consequences. Always confirm the exact date in your card account.

Always verify with the issuer

Card Strategist is an informational tool, not financial, tax, or legal advice. Sign-up bonuses, fees, credits, and earn rates change frequently and vary by applicant. Before you apply for a card or make a decision based on our estimates, confirm the current terms directly with the card issuer.