Myth 1: Carrying a balance helps your score

This is the most expensive myth in personal finance. Your credit score does not improve by carrying a balance and paying interest. Payment history and utilization ratio are what matter. Pay your full statement balance every month. Carrying a balance just costs you interest — typically 20-30% APR — and does nothing positive for your score.

Myth 2: Checking your score hurts it

Checking your own credit score is a "soft inquiry" and has zero impact on your score. You can check it daily if you want. What does cause a small, temporary dip is a "hard inquiry" — when a lender pulls your credit because you applied for a new account. Even then, the impact is minor (5-10 points) and fades within a few months.

Myth 3: Closing old cards improves your credit

The opposite is true. Closing an old card reduces your total available credit (raising your utilization ratio) and can shorten your average account age — both negative signals. If an old card has no annual fee, keep it open even if you don't use it. Put a small recurring charge on it to keep it active, and let it age gracefully.

Myth 4: You need to be debt-free to have good credit

Having debt doesn't automatically mean bad credit. What matters is how you manage it. A mortgage, student loan, or car loan paid on time every month is a positive signal. Lenders want to see that you can handle different types of credit responsibly. The mix of credit types actually accounts for about 10% of your score.

Myth 5: All credit scores are the same

You don't have one credit score — you have dozens. FICO and VantageScore are different scoring models, each with multiple versions. Different lenders use different versions. The score your bank shows you might not be the score a card issuer uses to evaluate your application. Don't obsess over a specific number. Focus on the behaviors that improve all scores: pay on time, keep utilization low, don't apply for too much credit at once, and let your accounts age.