Key Takeaways
Why credit score myths cost real money
Credit scores affect loan approvals, interest rates, and sometimes even rental applications. Families operating on incorrect assumptions about how scores work can make decisions that quietly raise their borrowing costs for years. This article covers the most widespread misconceptions and explains what actually happens inside a credit score calculation.
This article is general financial education, not personalized financial advice. Consult a licensed financial professional for guidance specific to your situation.
Myth
Checking your own credit score hurts it.
Fact
Checking your own score is a soft inquiry and has no effect on your credit score.
Credit inquiries come in two types. A hard inquiry happens when a lender pulls your report to make a lending decision, and it can lower your score by a few points temporarily. A soft inquiry, which includes checking your own score through any consumer service or being pre-screened by a lender, leaves no mark. Avoiding your own credit report out of fear of damage just leaves you uninformed about errors that could be costing you points.
Myth
Carrying a small balance on your credit card helps build credit.
Fact
Paying your balance in full each month is better for your score and costs you nothing in interest.
This myth is persistent and expensive. Credit scores measure your utilization ratio (the share of available credit you are using) at the time the card issuer reports to the bureaus, regardless of whether you paid last month's balance. Carrying a balance only generates interest charges. Paying in full avoids interest and keeps utilization low, which improves your score.
Myth
Your income directly affects your credit score.
Fact
Income is not a factor in any standard credit score calculation.
The major scoring models, including FICO and VantageScore, do not use income data. They calculate scores from information in your credit report: payment history, amounts owed, length of credit history, new credit, and credit mix. A high earner who misses payments will have a lower score than a modest earner who pays on time consistently. Lenders consider income separately when evaluating your ability to repay, but that is a different assessment from the score itself.
Myth
Closing a credit card you no longer use improves your score.
Fact
Closing an account typically lowers your score, at least in the short term.
When you close a revolving account, you lose that card's available credit limit. If you still carry balances on other cards, your utilization ratio rises immediately. You also lose the account's positive age contribution to your average account history. A card with no annual fee that you rarely use is usually better left open with an occasional small purchase to keep it active, rather than closed.
Myth
You need a perfect 850 credit score to get the best rates.
Fact
Lenders generally offer the same rates to anyone above a certain threshold, often around 760 to 780.
Most lenders tier their rates, and the top tier typically begins somewhere in the 760-to-780 range depending on the lender and loan type. Spending energy trying to push a score from 790 to 850 produces no measurable financial benefit. The meaningful improvements in rate offers happen at lower thresholds, such as moving from below 620 to above 670, or from the mid-600s to above 740. Focus on those transitions rather than chasing a perfect number.
Myth
Married couples automatically share one credit score.
Fact
Each person always has an individual credit file and score, regardless of marital status.
Marriage does not merge credit histories. Joint accounts appear on both spouses' reports, and each person's payment behavior on those accounts affects both scores. But each person retains their own file. This matters when one spouse has a significantly lower score: on a joint mortgage application, lenders often use the lower of the two scores to set the rate. In some cases, applying individually for a loan (and having the higher-scoring spouse be the sole applicant) can result in better terms, though that affects how much income and debt the lender considers.
Habits that backfire based on bad information
Several common credit-building habits are either useless or actively counterproductive. Carrying a small balance on a credit card is probably the most costly example. Many people believe it signals to lenders that they use credit responsibly. It does not. Credit utilization is measured whether or not you pay in full each month, and paying interest on a balance you do not need to carry produces no scoring benefit.
Similarly, opening multiple new accounts in a short window to diversify your credit mix will each trigger a hard inquiry and reduce your average account age, two factors that lower scores in the short term. Adding a different credit type (an installment loan alongside a revolving card) can eventually help, but the timing matters. The same logic applies in reverse when closing accounts: removing available credit raises your utilization ratio even if you never use that card.
For families weighing larger financial decisions, understanding how lenders actually read credit reports is worth the time. Our breakdown of renting versus buying covers how credit scores factor into mortgage qualification and what the numbers mean for total borrowing cost.
Errors on credit reports are common
A Federal Trade Commission study found that roughly one in five consumers had a material error on at least one of their credit reports. These errors can lower your score and raise your borrowing costs without your knowledge. You can request a free copy of your report from each of the three major bureaus through AnnualCreditReport.com and dispute inaccuracies directly with the bureau. Reviewing your reports periodically costs nothing and catches problems before they affect a loan application.