Part of our guide to What Actually Moves Your Credit Score
Credit scoring is opaque enough that folklore fills the gaps, and some of that folklore is expensive. These are the ones that come up most, with the mechanism behind each.
"You need to carry a balance to build credit"
Wrong, and it costs real money.
Your card issuer reports your payment history whether you clear the balance or carry it. Paying the statement balance in full is reported as an on-time payment exactly the same way as paying the minimum. The only difference between the two is the interest you pay.
At 22.9% APR, "building credit" this way on a $3,000 balance costs meaningful money every year in exchange for nothing the free version does not also provide. The credit card payoff calculator shows what carrying a balance actually costs.
Use the card, pay it in full, build the same history.
"Checking your credit score lowers it"
Wrong. Checking your own file is a soft inquiry. Soft inquiries are not counted by any scoring model, ever.
This myth causes active harm: it stops people from reading their own reports, which is the only way to find errors.
"Closing a credit card improves your score"
Usually the reverse.
Closing a card removes its limit from your total available credit, which raises your utilisation ratio on the same amount of debt. In time it also stops contributing to the average age of your accounts.
If the card carries a fee you no longer want, ask to downgrade it to a no-fee version of the same account rather than closing it — that usually preserves the account and its age.
"Your score is one number"
Wrong. You have many. FICO and VantageScore each publish several versions, and each is calculated separately against each of the three bureaus' data.
A mortgage lender may pull an older FICO version than the free score in your banking app shows. A gap between two numbers is normal and does not mean either is wrong.
"Income affects your credit score"
Wrong. Your income is not on your credit report and no scoring model uses it. A high earner with missed payments scores worse than a modest earner who pays on time.
Lenders do consider income — separately, at the point of application, alongside the score. That is a different assessment.
"Paying off a collection removes it"
Wrong. The entry generally stays until it ages off, usually updated to show as paid.
Whether that update helps depends on the scoring model: newer versions ignore paid collections, older ones still used in mortgage lending do not. There are good reasons to pay anyway; expecting the entry to disappear is not one of them.
"Debit cards build credit"
Wrong. No credit is extended, so nothing is reported to the bureaus. The same is true of most prepaid cards.
"One late payment ruins you for seven years"
Half wrong, and the wrong half matters. The entry remains visible for seven years. Its weight in your score fades continuously and most of the damage has receded well before then, provided nothing new joins it.
Recovery is steepest early. Waiting out the seven years is rarely the plan.
"Credit repair companies can remove accurate information"
Wrong, and this is a common scam. Nobody can remove accurate negative information — not for a fee, not by any method.
What such companies typically do is dispute entries in volume, hoping some go unverified inside the investigation window. You can dispute anything genuinely inaccurate yourself, for free, and it will stay corrected because it was wrong in the first place.
"Marriage merges your credit files"
Wrong. Credit files are individual and remain so. Joint accounts appear on both files, and a joint account handled badly damages both. But marrying someone with poor credit does not transfer their history to you.
"You must have zero utilisation for a perfect score"
Wrong. Reporting 0% across every account gives the model no evidence of recent use. A small reported balance generally scores at least as well as none at all.
This is not an argument for carrying debt. A balance reported on the statement closing date and paid in full by the due date costs nothing in interest.
"Rate shopping for a mortgage wrecks your score"
Wrong, and the models handle this deliberately. Multiple inquiries for the same loan type inside a short window are grouped and counted as one event, precisely so that comparing lenders is not punished — see hard vs soft inquiries.
Shop hard, inside a tight window, for one type of loan at a time.
The pattern underneath
Almost every myth here shares a shape: it recommends an action that costs you something — interest, a closed account, an unexamined report — in exchange for a benefit the scoring model does not actually award.
The behaviours that genuinely work are unglamorous and cheap. Pay on time, keep balances low relative to limits, leave old accounts open, apply for credit rarely, and check your report for errors. That is most of it.
Related reading
- How to improve your credit score — the order worth doing it in
- What actually moves your credit score
- What credit utilisation is
- How to check your credit report free
- How long negative information stays
This is general information, not financial advice — see our disclaimer.
Frequently asked questions
Do I need to carry a balance to build credit?
No. Paying your statement balance in full each month builds payment history identically and costs nothing in interest. This myth is expensive and remarkably persistent.
Does checking my own credit score lower it?
No. Checking your own file is a soft inquiry and is never counted in any scoring model.
Does closing a credit card improve my score?
Usually the reverse. Closing a card removes its limit from your utilisation calculation and eventually removes its age from your history.
Does income affect a credit score?
No. Income is not on your credit report and no scoring model uses it. Lenders consider income separately when deciding whether to approve you.
Do debit cards build credit?
No. Debit card activity is not reported to credit bureaus because no credit is being extended.
Does being married merge our credit files?
No. Credit files are individual. Joint accounts appear on both files, but marriage itself does not combine them or transfer one person's history to the other.
Sources
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