Finance glossary.

What a credit card annual fee is, how it is charged, when it is worth paying, and how to calculate break-even for any fee amount.

What APR means on a credit card and how it differs between purchase, balance transfer, cash advance, and penalty rates.

Why APY is not used for credit cards, how it differs from APR, and when compounding actually matters.

What an authorized user is on a credit card, how it affects credit scores for both the primary cardholder and the authorized user, and when adding one makes sense.

How balance transfers work, what the fees look like, and when moving debt to a new card actually saves you money.

What the balance transfer fee is, how it is calculated, when it is worth paying, and how to find cards with no fee.

What counts as a cash advance on a credit card, why it is expensive, and why you should almost always avoid it.

What a chargeback is, how the dispute process works, what qualifies as a valid chargeback reason, and how long the process takes.

What co-branded credit cards are, how airline and hotel co-branded cards work, and when they are worth getting versus flexible travel cards.

What a credit limit is, how issuers determine it, how it affects your credit utilization score, and how to request a higher limit.

What credit mix means in the context of your FICO score, which types of credit count toward it, and whether you need to add types of credit specifically to improve your score.

What is on your credit report, how to access it for free, how long items stay on your report, and what to do if you find errors.

What a credit score is, the difference between FICO and VantageScore, what the ranges mean, and the five factors that determine your score.

What credit utilization means, why keeping it under 30% matters for your FICO score, and how to calculate it across multiple cards.

How to dispute a credit card charge with your issuer and how to dispute errors on your credit report, including timelines, required information, and what to expect.

What the FICO score is, its 300 to 850 range, the five factors it measures and their weights, and how to read your score in context.

What the credit card grace period is, why it is the most powerful feature on your card, and how carrying a balance kills it.

What triggers a hard inquiry on your credit report, how much it affects your FICO score, how long it stays on your report, and the difference between hard and soft inquiries.

What an introductory APR offer is, how 0% intro APR works on purchases and balance transfers, when the promo ends, and what happens if you miss a payment during the period.

What constitutes a late payment on a credit card, the fees and interest consequences, how a late payment affects your credit score, and how to recover from one.

How the minimum payment is calculated, why paying only the minimum is a debt trap, and what it costs you over time.

What an over-limit fee is, the opt-in requirement under the CARD Act, when charges above your credit limit can occur, and how to avoid them.

What credit card prequalification is, how it uses a soft pull that does not affect your score, what prequalification does and does not guarantee, and how to use it effectively.

What credit card purchase protection covers, typical coverage amounts and timeframes, what is excluded, and how to file a claim.

What redemption rate means for credit card points and miles, how to calculate cents per point, typical redemption rates by program, and how to find the highest-value redemptions.

What the rewards rate on a credit card means, how earning rates work across base and bonus categories, caps and limits, and how to evaluate a card's total earning potential.

What a secured credit card is, how a security deposit works, how it builds credit, and when to graduate to an unsecured card.

What a credit card signup bonus is, how to meet the spending requirement, how points and cash are valued, and how taxes work.

What a soft inquiry is, why it does not affect your credit score, when soft inquiries occur, and how it differs from a hard inquiry.

What a statement credit is, how applying rewards as a statement credit works, when it makes sense versus other redemption options, and how it appears on your account.