What Affects Your Credit Score the Most? The 5 FICO Factors Ranked

Last updated: October 18, 2026

Not every financial move counts equally. Many people worry about a single credit inquiry while overlooking the habits that drive most of their score. One payment that’s 30 days late can do far more damage than several applications, and carrying high card balances can hold your score down even if you never miss a due date.

Your score is calculated entirely from your credit report, so these five factors are really five ways of reading the same file. Knowing their weight tells you where to focus first.

Start with the calculator below to see your credit utilization, the factor you can change fastest. Then read on for how each factor works, what doesn’t affect your score at all, and how to build credit from scratch. To see what your current number means, check our guide to credit score ranges.

1. Payment History (35%)

Payment history is the single biggest factor in your score. It answers the question every lender cares about most: do you pay what you owe, on time?

A payment usually isn’t reported as late until it’s at least 30 days past due. Once it is, it can cost a lot of points, especially if your record was clean before. How much damage a late payment does depends on:

• How late it was: 30, 60, 90 or 120+ days. Each step is worse.
• How recent it was: a late payment from last month weighs much more than one from five years ago.
• How many there are: one isolated slip is treated very differently from a pattern.

Collections, charge-offs and bankruptcies also fall under this factor and are the most damaging items of all. Late payments and most negative items stay on your report for about seven years, but their impact fades as they age and you add on-time payments.

What to do: set up autopay for at least the minimum on every account. If you miss a due date, pay as soon as possible. Getting current before the 30-day mark usually keeps the late payment off your report.

2. Amounts Owed and Credit Utilization (30%)

This factor looks at how much you owe, and above all at how much of your available revolving credit you’re using. That share is your credit utilization ratio. If you have $10,000 in total card limits and $2,500 in balances, your utilization is 25%.

• Overall and per card both count. One maxed-out card can hurt even if your total utilization is low.
• Lower is better. Under 30% is the common rule of thumb. People with the highest scores typically keep it under 10%.
• It updates fast. In most score versions, utilization reflects your latest reported balances only, so it recovers as soon as lower balances are reported. That makes it the quickest factor to improve.
• Timing matters. Most issuers report your statement balance, not your balance after you pay. Paying before the statement closing date gets the lower number onto your report. See how often credit reports update.

Installment loans such as mortgages and auto loans also count here, but paying them down moves your score far less than lowering card balances.

Myth: you don’t need to carry a balance to build credit. Paying your card in full every month costs nothing in interest and still shows lenders you use credit responsibly.

3. Length of Credit History (15%)

Older credit histories generally score better because they give lenders more evidence. This factor considers:

• The age of your oldest account
• The age of your newest account
• The average age of all your accounts
• How long specific accounts have been open, and how recently they’ve been used

You can’t rush this factor, but you can protect it. Keep your oldest cards open, even if you rarely use them. A small recurring charge on autopay keeps an old card active. Closed accounts in good standing still count toward your history for years, but closing a card also removes its limit, which can raise your utilization.

4. Credit Mix (10%)

Scoring models give a small boost when you’ve handled different kinds of credit well:

• Revolving credit: credit cards and lines of credit, where you borrow up to a limit and repay as you go.
• Installment credit: loans with fixed payments over a set term, like auto loans, student loans and mortgages.

This factor is minor. Never take out a loan just to improve your mix. The interest costs far more than the few points it might add.

5. New Credit (10%)

Opening several accounts in a short time can signal risk, especially if your history is short. This factor looks at recent hard inquiries and newly opened accounts.

• A single hard inquiry usually costs fewer than five points, and FICO only counts it for 12 months.
• Multiple mortgage, auto or student loan inquiries within a short rate-shopping window count as one.
• Credit card applications don’t get that treatment, so space them out.

Checking your own credit is never counted. For the details, see does checking your credit score hurt it?

What Doesn’t Affect Your Credit Score

Plenty of things people worry about play no part in a FICO Score:

• Your income, salary or job title
• Your bank account balances or savings
• Your age, race, religion, sex, national origin or marital status
• Where you live
• Checking your own score or report, and other soft inquiries
• Using a debit card
• The interest rate on your cards or loans
• Rent, utility and phone bills, unless they’re reported through a service you joined or an unpaid bill goes to collections

Lenders may still look at your income and employment when deciding on an application. They just aren’t part of the score. Lenders weigh these alongside your credit through what’s known as the 5 Cs of credit.

No Credit History? How to Build It From Scratch

If you’ve never had credit, you may not have a score at all. To generate a FICO Score, you generally need at least one account that’s been open for six months or more and at least one account reported to a bureau within the past six months. VantageScore can produce a score sooner, but most lenders still use FICO.

The most reliable starting points:

• Secured credit card: you put down a refundable cash deposit, which usually becomes your limit. Use it for a small bill each month and pay in full. Many issuers later upgrade you to a regular card and return the deposit.
• Credit-builder loan: offered by many credit unions and community banks. The lender holds the loan amount in a savings account while you make fixed payments, and you get the money at the end. It adds on-time installment history.
• Authorized user: a family member with good habits adds you to their card. Their account’s history can appear on your report. If they pay late or run up the balance, that can hurt you too, so only do this with someone you trust.
• Rent and utility reporting: some services add on-time rent, utility or phone payments to your file. They can help a thin file, though not every lender or score version uses this data.

Whichever you choose, the rules are the same: pay on time, keep balances low and add new accounts slowly. Pull your free reports along the way to confirm the accounts are being reported — our guide on how to read your credit report shows what to look for.

What to Fix First

1. Bring any late accounts current. Stopping new late payments matters more than anything else.
2. Lower your card balances. Aim for under 30% overall and on each card, then under 10%. This is usually the fastest way to gain points.
3. Automate payments. Autopay for at least the minimum on every account removes the biggest risk.
4. Check your reports for errors. A wrong late payment or a limit reported too low can cost real points, and disputes are free.
5. Leave old accounts open and pause new applications until your score recovers.

Once you know your number, our guide to credit score ranges shows which tier you’re aiming for.

Frequently Asked Questions

What affects your credit score the most?

Payment history, which makes up 35% of a FICO Score. Credit utilization is close behind at 30%. Together, paying on time and keeping card balances low cover about two-thirds of your score.

What is a good credit utilization ratio?

Under 30% is the common guideline, both overall and on each card. People with the highest scores usually keep utilization below 10%.

How much does one late payment hurt your credit score?

It depends on your profile, but one payment reported 30 or more days late can cost a significant number of points, especially if your record was otherwise clean. The impact fades over time, and the late payment drops off your report after about seven years.

Does closing a credit card hurt your score?

It can. Closing a card removes its limit, which can raise your utilization, and closing your oldest card can eventually shorten your credit history. Keeping old no-fee cards open is usually better.

Do I need to carry a balance to build credit?

No. Paying your full statement balance every month builds credit just as well and saves you interest. Carrying a balance only raises your utilization and costs you money.

How long does it take to build a credit score from scratch?

Usually about six months. A FICO Score generally requires at least one account open for six months and at least one account reported in the last six months.

Sources

• Experian: What’s the most important factor of your credit score?
• myFICO: How do credit inquiries affect my FICO Score?
• Federal Trade Commission: You now have permanent access to free weekly credit reports