Credit Score Basics: What Moves Your Score

Your credit score is a three-digit number that lenders use to estimate how likely you are to repay borrowed money on time. It can affect whether you are approved for a credit card, car loan or mortgage, and the interest rate you are offered. Landlords, insurers and some employers may also look at your credit information, depending on state law and the situation.

The good news is that credit scores are not mysterious. They are calculated from the information in your credit reports, and the main factors are well known. Once you understand what moves the number, you can focus on the few habits that matter most and ignore the noise.

This guide covers the difference between credit reports and credit scores, the factor categories that drive your score, a worked example of credit utilization, how to get your free reports, and how to dispute mistakes.

Credit reports vs credit scores

These two terms are often used interchangeably, but they are different things.

A credit report is a record of your credit history. In the US, three nationwide credit bureaus (Equifax, Experian and TransUnion) collect information from lenders and compile reports. A report typically includes:

• Your identifying information (name, addresses, Social Security number, sometimes employers)
• Your credit accounts: credit cards, auto loans, student loans, mortgages, with balances, limits and payment history
• Inquiries: a list of who has requested your report
• Certain public records such as bankruptcies, and accounts sent to collections

A credit score is a number calculated from the data in one of those reports by a scoring model. The two most widely known model families are FICO and VantageScore. Many common versions use a range of 300 to 850, where higher is better.

Because each bureau may hold slightly different information, and because there are many scoring models and versions, you do not have one single credit score. You may see different numbers from different sources. That is normal. What matters is the overall range you fall in and the direction it is moving.

The factor categories that move your score

FICO publishes a general breakdown of how much each category matters for the general population. VantageScore uses similar ingredients with different weights and labels. The percentages below are FICO’s published approximations; for any individual, the importance of each factor can vary.

Factor	Approximate weight (FICO)	What it measures
Payment history	35%	Whether you pay on time, and how severe and recent any late payments are
Amounts owed	30%	How much you owe, especially credit card balances relative to limits (utilization)
Length of credit history	15%	Age of your oldest account, newest account and the average
New credit	10%	Recent applications and newly opened accounts
Credit mix	10%	Having experience with different types of credit, such as cards and installment loans

Payment history

This is the single largest factor. A payment that is 30 or more days late can be reported to the bureaus and may lower your score significantly, especially if your history was otherwise clean. Payments that are later (60 or 90 days) and accounts sent to collections do more damage.

The practical habit: set up at least the minimum payment on autopay for every account, so a busy month never turns into a late payment.

Amounts owed and credit utilization

Within this category, credit utilization is the piece people can influence fastest. It is the share of your available revolving credit (mainly credit cards) that you are using.

Utilization = total card balances / total card limits

Scoring models look at utilization both overall and on each card. Lower is generally better. Many people aim to stay well below 30%, and people with the highest scores often use much less, though there is no magic cutoff.

Worked example

Suppose you have two credit cards:

• Card 1: $1,500 balance, $5,000 limit
• Card 2: $500 balance, $3,000 limit

Overall utilization = ($1,500 + $500) / ($5,000 + $3,000) = $2,000 / $8,000 = 25%.

Card 1 on its own is at $1,500 / $5,000 = 30%.

Now suppose you pay $1,000 toward Card 1 before the statement closes:

• New overall utilization = $1,000 / $8,000 = 12.5%.
• Card 1 on its own = $500 / $5,000 = 10%.

Card issuers usually report your balance to the bureaus around your statement closing date, not your due date. So paying down a balance before the statement closes can lower the utilization that gets reported.

Now the opposite: suppose you close Card 2 after paying it to zero. Your total limit falls from $8,000 to $5,000. With the same $1,500 balance on Card 1, utilization jumps to $1,500 / $5,000 = 30%. That is why closing an unused, no-fee card can sometimes nudge your score down.

Unlike late payments, utilization has no long memory in many scoring models. Once lower balances are reported, the effect can show up quickly.

Length of credit history

Older accounts help. This factor rewards time, which means there is not much you can do to speed it up. The main lesson is to think twice before closing your oldest card, especially if it has no annual fee.

New credit

When you apply for credit, the lender usually makes a hard inquiry, which can lower your score slightly for a time. Opening several new accounts in a short period can signal risk. Hard inquiries generally remain on your report for about two years, though their effect on the score usually fades sooner.

Soft inquiries, such as checking your own credit or a lender pre-screening you for an offer, do not affect your score. Checking your own score does not hurt it.

When you shop for a mortgage, auto loan or student loan, scoring models generally treat several inquiries within a short window as one, so comparing lenders for the same loan is not heavily penalized. Do your rate shopping within a focused period.

Credit mix

Having both revolving credit (cards) and installment loans (fixed payments, such as an auto loan) can help a little. This is a small factor, and it is never a good reason to take on debt you do not need.

What does not affect your score

Credit scores are built from credit report data, so some things are not part of the calculation, including your income, your savings balance, your job title, and your age. Federal law also prohibits lenders from considering certain characteristics such as race, religion, national origin, sex or marital status when making credit decisions. Rent and utility payments generally do not appear on traditional reports unless they go to collections or you use a service that reports them.

Savings still matter indirectly, though. An emergency fund kept in something like a high-yield savings account means a surprise bill is less likely to end up as a high card balance or a missed payment.

How long negative items last

Under the Fair Credit Reporting Act, most negative information, such as late payments and collections, can generally stay on your report for up to seven years. Some bankruptcies can stay for up to ten years. The impact usually fades as the item ages and newer positive history builds up on top of it.

How to get your free credit reports

The official source for free credit reports from all three nationwide bureaus is AnnualCreditReport.com. This is the site authorized under federal law. Check the site for how often free reports are currently available.

A few cautions:

• Type the address directly. Look-alike websites may try to sell you something or collect your data.
• Free reports do not always include a credit score. Many banks and card issuers show you a score for free, often labeled with the model used.
• Review all three reports, since a lender may report to one bureau but not another.

How to dispute an error

Mistakes on credit reports happen: an account that is not yours, a payment marked late that was on time, a debt listed twice, or an old address that signals mixed files.

1. Gather evidence. Collect statements, payment confirmations or letters that show the correct information.
2. Dispute with the bureau that shows the error. Each bureau accepts disputes online, by mail or by phone. Explain clearly what is wrong and include copies (not originals) of your documents.
3. Consider disputing with the company that reported it too. The lender or collector that provided the information also has duties to investigate.
4. Watch for the result. Bureaus are generally required to investigate within about 30 days and tell you the outcome. If the item is corrected, ask for an updated copy of your report.
5. Escalate if needed. If you cannot resolve it, you can submit a complaint to the Consumer Financial Protection Bureau.

Only accurate negative information can stay on your report. Be wary of credit repair companies that promise to remove accurate items or charge large fees upfront. You can dispute errors yourself for free.

If you see accounts you did not open, that may be identity theft. Consider placing a fraud alert or freezing your credit with each bureau, which is free.

Common mistakes

• Missing a payment over a small balance. A forgotten $25 bill can do outsized damage. Autopay for minimums is the simplest protection.
• Maxing out a card even if you pay it in full. If the statement balance is high when it is reported, your utilization looks high that month.
• Opening several cards at once for sign-up offers. Multiple hard inquiries and new accounts can lower your score, especially before applying for a mortgage or car loan.
• Closing old cards automatically. It can reduce your available credit and, over time, the age of your history.
• Paying for something that is free. Your credit reports, disputes and credit freezes are free.

Key takeaways

• Credit reports are the records; credit scores are numbers calculated from those records by models such as FICO and VantageScore.
• Payment history and amounts owed are the largest factors. Pay on time and keep card balances low relative to limits.
• Utilization can change quickly once lower balances are reported, while late payments can affect your report for years.
• Get free reports from all three bureaus at AnnualCreditReport.com and review them for errors.
• You can dispute inaccurate information yourself, for free, with the bureau and the company that reported it.

Next steps

1. Pull your credit reports from AnnualCreditReport.com and check each one line by line.
2. Set up automatic minimum payments on every credit account.
3. Calculate your overall and per-card utilization using the formula above.
4. If you are carrying balances, make a payoff plan using the avalanche or snowball method.