Why Credit Myths Are Surprisingly Costly

Credit scores influence some of the most significant financial decisions in your life — mortgage rates, auto loan terms, apartment applications, and even certain job screenings. Yet a surprising number of Americans navigate these decisions armed with misinformation. Acting on a credit myth doesn't just leave you uninformed; it can translate into a higher interest rate, a denied application, or unnecessary fees paid over years.

This article addresses the most common credit misconceptions, replaces each with the evidence-based reality, and explains why the distinction matters in practical terms. For a foundational look at how credit scores are actually calculated, see our plain-language breakdown of what a credit score measures.

Myth

Checking your own credit score will lower it.

Fact

Checking your own score is a 'soft inquiry' and has absolutely no effect on your credit score.

Credit inquiries fall into two categories. A hard inquiry occurs when a lender pulls your report to make a lending decision — this can temporarily lower your score by a small number of points. A soft inquiry occurs when you check your own score, or when a lender pre-screens you without your formal application. Soft inquiries do not affect your score under any major scoring model. Avoiding your own credit report out of fear is counterproductive; monitoring it regularly is one of the most effective ways to catch errors and identity theft early.

Myth

Carrying a small balance on your credit card helps build your credit score.

Fact

Carrying a balance provides no scoring benefit and costs you interest charges you would otherwise avoid.

This myth likely stems from confusing 'using credit' with 'carrying debt.' Scoring models do reward responsible credit use — but they measure that by whether you have activity and whether you pay on time, not by whether you carry a revolving balance. Paying your statement balance in full each billing cycle demonstrates responsible use, keeps your credit utilization ratio (the percentage of available credit you're using) low, and avoids interest entirely. Intentionally carrying a balance is simply an unnecessary expense. For a closer look at what compounding interest really costs, see the hidden costs of carrying a balance.

Myth

Closing a credit card you no longer use will improve your score.

Fact

Closing an old account can hurt your score by reducing available credit and shortening your credit history.

Two major scoring factors are directly affected when you close a card. First, your credit utilization ratio — the share of your total available credit that you're using — rises when a card's credit limit is removed from the denominator. If you carry any balances on other cards, your utilization percentage jumps immediately. Second, the length of credit history component rewards older accounts. Closing your oldest card can lower your average account age over time. Unless a card carries an annual fee that outweighs its benefit, keeping it open and occasionally using it for a small purchase is generally the lower-risk approach. Learn more about how utilization and history interact in our guide to the five factors behind your credit score.

Myth

A higher income will raise your credit score.

Fact

Income is not a factor in any major credit scoring model — your score reflects how you manage debt, not how much you earn.

FICO scores and VantageScores are calculated from the information in your credit report, and your income does not appear there. The five factors that actually drive your score are payment history, amounts owed (including utilization), length of credit history, new credit, and credit mix. A person earning a modest salary but paying every bill on time can have a higher score than someone earning six figures who regularly misses payments. Lenders may consider income separately when evaluating your overall creditworthiness — but that is a different assessment from your credit score itself.

Myth

Shopping around for loan rates will seriously damage your credit score.

Fact

Multiple rate inquiries for the same loan type, made within a focused time window, typically count as a single hard inquiry.

Major scoring models recognize that comparison-shopping for mortgages, auto loans, or student loans is financially responsible behavior, not a sign of credit risk. FICO, for example, groups multiple inquiries for the same loan type made within a 45-day window into one. Older model versions use a shorter 14-day window. The practical takeaway: concentrate your rate-shopping within that window and you'll experience minimal scoring impact. Avoiding comparison-shopping out of fear of score damage is itself a myth that can cost you real money in the form of a higher interest rate. This principle applies directly when you're financing a vehicle purchase, where loan terms vary significantly across lenders.

Putting the Myths to Work: Practical Steps

Correcting your mental model is only useful if it changes behavior. Here's what these facts should prompt you to do:

  • Check your own reports regularly. You are entitled to free reports from each of the three major bureaus (Equifax, Experian, TransUnion) via AnnualCreditReport.com. Reviewing them costs you nothing score-wise and can catch errors early.
  • Pay your statement balance in full each month. Carrying a balance costs you interest without any scoring benefit. If cash flow is tight, prioritize at least reducing your utilization well below 30%.
  • Think carefully before closing old accounts. If a card has no annual fee, keeping it open preserves your available credit and credit history length — both of which factor into your score.
  • When rate-shopping for a mortgage, auto loan, or student loan, do it within a focused window — most scoring models group similar inquiries made within 14–45 days into one. Spacing them out unnecessarily multiplies the impact.

Myth-Based Decisions Have Real Costs

Acting on credit misinformation — like intentionally carrying a balance or closing old cards — can raise your utilization, lower your score, and ultimately result in higher interest rates on future loans. Even a fraction of a percentage point difference on a 30-year mortgage can add thousands of dollars in total interest. Before making any significant change to your credit accounts, verify the logic against how scoring models actually work, not how you've heard they work.

Credit-building is fundamentally about consistent habits over time. Our guide on evidence-backed credit-building principles covers the long-term practices that actually move the needle. And if your score recently took a hit that affected a credit application, understanding why lenders say no is a logical next step.

This article provides general financial education and is not personalized financial or credit advice. Consult a qualified financial professional for guidance specific to your situation.