Credit scores quietly shape a lot of financial life: whether you get approved for a loan, what interest rate you pay, sometimes even whether you can rent an apartment or get a cell phone plan without a deposit. Yet most people have only a rough idea of how the number is actually calculated. That gap in understanding is exactly where a lot of costly myths take root.
Here's a clear look at how credit scores work, and three widely believed myths that can lead people astray.
What a Credit Score Actually Measures
A credit score is a three-digit number, typically ranging from 300 to 850, meant to estimate how likely you are to repay borrowed money on time. It doesn't measure your income, your savings, or your overall financial health — just your track record and patterns as a borrower.
The two most common scoring models are FICO and VantageScore. They weigh factors slightly differently, but both rely on the same general categories of information from your credit reports:
1. Payment History (the biggest factor) Whether you've paid past credit accounts on time. Late payments, collections, and bankruptcies hurt this the most, and the damage lingers for years.
2. Amounts Owed / Credit Utilization How much of your available credit you're using, especially on revolving accounts like credit cards. Maxed-out cards signal higher risk, even if you pay on time.
3. Length of Credit History How long your accounts have been open. A longer history generally helps, since it gives more data to evaluate.
4. Credit Mix Whether you manage different types of credit — credit cards, installment loans, a mortgage — responsibly.
5. New Credit / Recent Inquiries How many new accounts you've opened recently and how many hard inquiries have hit your report. Opening several accounts in a short window can look risky.
These factors are pulled from your credit reports at the three major bureaus — Equifax, Experian, and TransUnion — which is why your score can differ slightly depending on which bureau's data is used and which scoring model is applied.
Myth #1: "Checking my own credit score hurts it."
This is one of the most persistent misunderstandings. There's an important distinction between two types of credit checks:
A soft inquiry — like checking your own score through a bank app, or a lender pre-qualifying you — has no effect on your score.
A hard inquiry — which happens when you formally apply for credit — can cause a small, temporary dip.
Pulling your own credit report or score, no matter how often, is always a soft inquiry. It costs you nothing. In fact, regularly checking your score is one of the best ways to catch errors or fraud early.
Myth #2: "Carrying a small credit card balance helps your score."
Many people believe that letting a balance roll over month to month — rather than paying it off in full — helps "build credit" or shows lenders you can handle debt. It doesn't. This idea likely persists because it sounds like it should be true, but scoring models don't reward you for paying interest.
What actually matters is your credit utilization ratio — the percentage of your available credit you're using — not whether you carry a balance. You can pay your card in full every month and still have excellent, growing credit, because on-time payment and low utilization are what get rewarded. Carrying a balance only costs you interest with no scoring benefit.
Myth #3: "Closing old or unused credit cards improves your score."
This feels intuitive — fewer accounts, simpler finances, cleaner credit. But closing a card can actually work against you in two ways:
It reduces your total available credit, which can raise your utilization ratio even if your spending hasn't changed.
If it's one of your oldest accounts, closing it can eventually shorten your average length of credit history once it drops off your report.
In most cases, it's better to leave old, unused cards open (ideally with no annual fee) rather than closing them, unless there's a specific reason — like avoiding temptation to overspend or eliminating a costly annual fee that isn't worth it.
The Bigger Picture
Credit scores reward consistency and patience more than any clever trick: pay on time, keep balances low relative to your limits, and let your credit history age naturally. There's no shortcut that beats simply managing credit responsibly over time.
Disclosure: This article is for general educational purposes only and does not constitute financial, credit, or legal advice. Credit scoring models vary by provider and may weigh factors differently than described here. For guidance specific to your financial situation, consult a qualified financial advisor or credit counselor.