I once turned down a zero-percent car financing offer because I thought it would hurt my credit score. A friend told me that too many inquiries would tank my number, and I believed him. So I paid cash for the car instead, which drained my emergency fund and left me scrambling when a medical bill showed up two months later.
That decision cost me roughly $4,000 in opportunity cost — money that could have stayed invested while I made interest-free payments on the vehicle. All because of a myth about how credit scores work.
Credit scores are surrounded by more misinformation than almost any other financial topic. And the cost of believing the wrong things is not just theoretical. It shows up in higher interest rates, denied applications, and missed opportunities that add up to thousands of dollars over a lifetime.
Myth One: Checking Your Own Score Lowers It
This is probably the most persistent credit myth out there, and it is completely false. When you check your own credit score or pull your own credit report, it counts as a soft inquiry. Soft inquiries have zero impact on your score. None.
Hard inquiries — the kind that happen when a lender checks your credit because you applied for a loan or credit card — can affect your score, but even then, the impact is small and temporary. A single hard inquiry typically drops your score by three to five points, and the effect fades within a few months.
I check my credit score every single month through my bank’s free monitoring tool. It has never caused a dip, and the habit has helped me catch errors early — including one time when an old medical bill showed up as unpaid even though I had settled it years earlier. Disputing it through AnnualCreditReport.com took about 20 minutes and boosted my score by 30 points.
Myth Two: Carrying a Balance Helps Your Score
This one drives me crazy because it actually costs people money. The belief is that you need to carry a small balance on your credit card each month — pay some but not all — to show lenders you are using credit responsibly.
It is wrong. Your credit utilization ratio, which measures how much of your available credit you are using, is calculated based on your statement balance. Paying your balance in full every month does not hurt your score. In fact, it helps because it keeps your utilization low and eliminates interest charges entirely.
Carrying a balance just means you are paying interest for no benefit. On a card with a 22 percent APR, a $2,000 carried balance costs you about $440 a year in interest. That is money thrown away based on bad advice.
The optimal strategy is to use your cards regularly, keep the statement balance below 30 percent of your credit limit — ideally under 10 percent — and pay in full every month. Your score will reflect responsible usage, and you will never pay a cent in interest.
Myth Three: Closing Old Cards Helps Your Score
When people want to “clean up” their credit, they often start by closing old credit cards they no longer use. This almost always backfires for two reasons.
First, closing a card reduces your total available credit, which increases your utilization ratio. If you have $20,000 in total credit limits and carry $2,000 in balances, your utilization is 10 percent. Close a card with a $5,000 limit, and suddenly your utilization jumps to about 13 percent — even though you did not spend a dollar more.
Second, account age matters. Fifteen percent of your FICO score comes from the length of your credit history, and closing your oldest card shortens your average account age. I have a card I opened in 2008 that I use once a quarter just to keep it active. It costs me nothing and adds over 18 years of history to my profile.
If an old card has an annual fee you do not want to pay, call the issuer and ask to downgrade to a no-fee version. You keep the account age and credit limit without the cost.
Myth Four: Your Income Affects Your Score
Your credit score does not know how much money you make. Income is not a factor in the FICO or VantageScore models. A person earning $40,000 a year with perfect payment history and low utilization will have a higher score than someone earning $400,000 who misses payments and maxes out cards.
What income does affect is your ability to get approved for credit and the limits you are offered. But the score itself is built entirely on your credit behavior — payment history, amounts owed, length of history, new credit, and credit mix.
This myth matters because it discourages lower-income earners from building credit. I have coached people who assumed they could not have a good score because they did not earn enough. Once they understood the actual factors, they improved their scores by 100 points or more within a year by adjusting their habits.
Myth Five: You Only Have One Credit Score
Most people think they have a single credit score, like a GPA. In reality, you have dozens. FICO alone has multiple versions — FICO 8, FICO 9, FICO 10, and industry-specific versions for auto lending and mortgages. VantageScore has its own set of models. And each score can differ across the three major bureaus because not all creditors report to all three.
The score your credit card app shows you might be a VantageScore 3.0 from TransUnion. The score your mortgage lender pulls could be a FICO 5 from Equifax. They can differ by as much as 20 to 40 points.
This is not something to stress about, but it is important to understand so you are not surprised when numbers vary. The habits that improve one score improve all of them — pay on time, keep utilization low, maintain old accounts, and limit new applications.
What Actually Moves the Needle
If you want to meaningfully improve your score, focus on the two factors that carry the most weight. Payment history accounts for 35 percent of your FICO score. One missed payment can drop your score by 50 to 100 points, and it stays on your report for seven years. Set up autopay for at least the minimum on every account. No exceptions.
Credit utilization accounts for another 30 percent. If you can keep your total utilization under 10 percent across all cards, you are in excellent shape. One trick that works well: ask your card issuers for credit limit increases every six months. If they grant them, your utilization drops automatically without any change in spending.
Beyond those two, time is your friend. The longer you maintain good habits, the higher your score climbs. There are no shortcuts, despite what those credit repair ads promise. Speaking of which, most paid credit repair services do nothing you cannot do yourself for free through the bureau dispute process.
The Real Cost of a Low Score
A credit score below 680 does not just mean higher interest rates. It means paying tens of thousands more over your lifetime. On a $300,000 30-year mortgage, the difference between a 6 percent rate and a 7 percent rate is over $70,000 in total interest. On a $25,000 car loan, a two-point rate difference adds about $1,500 over five years.
Beyond loans, a low score can affect your insurance premiums, your ability to rent an apartment, and even some job applications. The score follows you everywhere, which makes understanding how it actually works — not how people say it works — worth serious attention.
Stop listening to myths. Start checking your score, paying in full, keeping old accounts open, and giving the system time to reward your behavior. The thousands you save will be very real.
Image Credit: Markus Winkler; Pexels
