Key Takeaways
What a credit score actually calculates
A credit score is a three-digit number, typically ranging from 300 to 850, that summarizes a person's history of borrowing and repaying debt. The most widely used model, FICO, weights five factors: payment history (approximately 35%), amounts owed (30%), length of credit history (15%), credit mix (10%), and new credit inquiries (10%). VantageScore, another common model, uses similar inputs with slightly different weighting.
None of those factors include your income, your savings balance, your net worth, or how responsibly you manage cash. A household earning $200,000 a year with no credit accounts will have little to no scorable history, while a family earning $45,000 with a long record of on-time payments may have an excellent score. The score is a narrow measure of one thing: how reliably you have repaid credit obligations in the past.
For families trying to understand where their money goes more broadly, see this category-by-category household spending breakdown for context on how borrowing fits into the bigger financial picture.
Errors on your report can cost you
The Consumer Financial Protection Bureau has documented that credit report errors are common and can materially lower a score. You are entitled to a free copy of your credit report from each of the three major bureaus once per year through AnnualCreditReport.com. If you find an inaccurate account, incorrect payment status, or unfamiliar inquiry, you can dispute it directly with the bureau that holds the record. Correcting errors is one of the few ways to see a score change without changing any actual credit behavior.
Common myths and the accurate corrections
Misconceptions about credit scores are widespread, and acting on wrong information can lead to decisions that hurt the score you are trying to protect or improve.
Myth
Checking your own credit score will lower it.
Fact
Checking your own credit score or report is a soft inquiry and has no effect on your score.
Inquiries fall into two categories. A hard inquiry occurs when a lender pulls your credit as part of an application decision; multiple hard inquiries in a short window can cause a small, temporary score dip. A soft inquiry, which includes checking your own report, pre-approval checks by lenders, and background checks by employers, does not affect the score at all. Regularly reviewing your own credit is considered a sound financial habit because it lets you catch errors or fraudulent accounts before they cause lasting damage.
Myth
You need to carry a balance on your credit card to build credit.
Fact
Paying your balance in full each month builds credit just as effectively, and costs you nothing in interest.
Credit scores measure whether you use available credit and repay on time, not whether you pay interest to a lender. The amounts-owed factor rewards a low credit utilization ratio, which is the percentage of your available credit limit you are using. Carrying a large balance can raise that ratio and hurt your score. Paying the statement balance in full each month keeps utilization low, avoids interest charges, and produces the same positive payment history as carrying a revolving balance would.
Myth
Closing old credit card accounts improves your score by cleaning up your history.
Fact
Closing old accounts often lowers your score by reducing available credit and shortening your average account age.
When you close a credit card, the credit limit attached to that card disappears. If you still carry balances on other cards, your overall utilization ratio rises immediately. Closing an old account can also reduce your average length of credit history, which is a factor in most scoring models. Accounts with no annual fee are generally worth keeping open and using occasionally, even if you no longer rely on them for everyday spending.
Myth
Income is factored into your credit score.
Fact
Credit scores do not include income, employment status, or wealth in their calculation.
FICO and VantageScore both calculate scores using data held in your credit bureau file. That file contains your account history, payment records, balances, and inquiry history, none of which includes what you earn. Lenders may ask for income information separately as part of an application, and they use it to assess debt-to-income ratio, but that calculation happens outside the credit score itself. A person with a high income and poor repayment habits can have a low score; a person with a modest income and consistent on-time payments can have a high one.
Myth
A perfect credit score means you will always be approved for credit.
Fact
Lenders weigh multiple factors beyond the score, and approval is never guaranteed by a high number alone.
Even a score at the top of the range does not override other underwriting criteria. A lender may decline an applicant with an excellent score who has a high debt-to-income ratio, insufficient income for the loan size requested, or a recent bankruptcy that remains on the credit report. Each lender sets its own approval criteria, and those criteria extend well beyond the score threshold. Understanding this distinction helps families set realistic expectations when applying for credit.
What lenders actually do with your score
A credit score is an input, not a verdict. When a lender evaluates a loan or credit application, the score sits alongside other data: debt-to-income ratio, employment status, the size of the requested loan, and the value of any collateral. Two applicants with identical scores can receive different offers based on those other variables.
Different score ranges matter for different products. Mortgage lenders, auto lenders, and credit card issuers each set their own thresholds, and those thresholds shift with broader economic conditions. A score that qualifies for one lender's standard rate may not meet another's. This means a credit score is best understood as one signal in a longer conversation between a borrower and a lender, not a fixed judgment.
Scores also vary by bureau and by model version. A lender pulling your Equifax report may see a slightly different number than one pulling your TransUnion report, because each bureau holds the data creditors have reported to it, and not all creditors report to all three bureaus. Checking your reports from all three bureaus annually, which is free at AnnualCreditReport.com, gives you the most complete picture of what lenders see.
This article is for general informational purposes only and does not constitute personalized financial or legal advice. Consult a qualified financial professional for guidance specific to your situation.