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What Affects Your Credit Score? The 5 Factors

Learn what affects your credit score across all five FICO factors: payment history (35%), amounts owed (30%), length of history, new credit, and mix.

Hand holding a phone with a calculator over a folder of financial documents
Hand holding a phone with a calculator over a folder of financial documents

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Your FICO score is built from five factors: payment history (35%), amounts owed (30%), length of credit history (15%), new credit (10%), and credit mix (10%). Payment history and how much you owe together drive about two-thirds of your score, so they're where to focus.

1. Payment history — 35%

Whether you pay on time is the single biggest factor. One payment that's 30+ days late and reported can drop your score noticeably and stay on your report for up to seven years. Paying every bill on time, every time, is the foundation.

2. Amounts owed (credit utilization) — 30%

This is mostly your credit utilization — the percentage of your available revolving credit you're using. Lower is better; keeping utilization in the single digits to low double digits helps most. Because issuers report your statement balance, paying down before the statement closes can lower the utilization that gets reported.

3. Length of credit history — 15%

Older accounts help. This is why closing your oldest card can backfire, and why becoming an authorized user on a long-standing account can help a thin file.

4. New credit — 10%

Opening several accounts in a short time, and the hard inquiries that come with them, can ding your score temporarily. Checking your own score never does — only applications do.

5. Credit mix — 10%

A blend of revolving credit (cards) and installment loans (auto, student, personal) shows you can manage different types. It's the smallest factor — never take on debt you don't need just for "mix."

Watching the factors move

CreditVana's report card helps explain which factors may be helping or hurting your score. Premium adds a wider monitoring view across all three bureaus.

How the five factors interact when your score changes

Knowing what affects your credit score helps you prioritize the exact moves that deliver the fastest results. Because payment history and amounts owed represent nearly two-thirds of your total FICO calculation, small changes in those two areas outweigh almost everything else on your credit report:

  • Individual vs. overall utilization: Scoring models evaluate both your total revolving utilization across all cards combined and the utilization on each individual card. Maxing out one card can lower your score even if your overall utilization across other cards stays low.
  • Closed accounts and credit age: An account closed in good standing remains on your credit report and continues contributing to your average age of accounts for up to ten years, though closing it immediately removes its credit limit from your available utilization calculation.
  • Recovery timelines for negative marks: While a late payment or collection stays on your report for seven years, its negative impact fades gradually over time—especially once you stack twelve to twenty-four consecutive months of on-time payments on top of it.

Action checklist to strengthen all five factors

Turn on autopay for at least the minimum due on every account so a busy week never turns into a thirty-day late mark, pay down revolving balances before the statement closing date, keep zero-annual-fee starter cards open to preserve account age, and apply for new credit only when you have a clear financial purpose.

Putting this guidance into practice

Building strong personal finances and protecting your credit profile does not require complicated strategies—it comes down to understanding how lenders and credit bureaus evaluate your everyday decisions. Review your credit reports across Equifax, Experian, and TransUnion regularly, keep your revolving credit card balances low relative to your limits, and compare rates and fee structures carefully before applying for any new financial product. When you track your progress month by month, small improvements in payment consistency and credit utilization compound into significantly lower borrowing costs over time.

When to review your credit strategy

Make a habit of checking your credit standing at least ninety days before any major financial milestone—such as shopping for an auto loan, applying for a mortgage, refinancing student debt, or signing a new apartment lease. That ninety-day window gives you enough time to pay down statement balances before your card issuers report to the bureaus, dispute any outdated or inaccurate entries on your credit files, and avoid new hard inquiries so your application reaches underwriters in the strongest possible position. Comparing your options across multiple lenders within a focused rate-shopping window also ensures you capture the lowest available annual percentage rate without adding unnecessary credit inquiries to your profile.

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Frequently asked questions

What is the biggest factor in your credit score?

Payment history is the biggest factor at about 35% of your FICO score. Paying every bill on time is the most important habit for your credit.

What hurts your credit score the most?

Missed or late payments and high credit utilization hurt the most, since payment history (35%) and amounts owed (30%) together drive about two-thirds of your score.

What credit utilization is best?

Lower is better. Keeping your reported balances in the single digits to low double digits as a percentage of your limits generally helps your score most.

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