What Affects Your Credit Score: 5 Key Factors Explained (2026)

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Your FICO credit score is determined by exactly five factors, each with a defined percentage weight. Knowing those weights — and which actions move which factor — lets you target your effort at the highest-leverage moves. Most borrowers waste energy on tactics that affect 5–10% factors when 60% of their score is sitting in the top two factors waiting to be optimized.

This guide breaks down each of the five factors, what specifically you can change, and how fast each change shows up.

The 5 FICO Score Factors

Factor	Weight	Time to Change	Hardest to Move
1. Payment history	35%	Months to years	Late payments stick 7 yrs
2. Credit utilization	30%	30 days	Easiest
3. Length of credit history	15%	Years	Hardest
4. Credit mix	10%	Months	Easy
5. New credit / inquiries	10%	12 months	Easy

1. Payment History (35%)

The single biggest factor. Records every on-time and late payment for revolving and installment accounts.

What hurts:

• 30-day late payment: −60 to −110 points
• 60-day late: −80 to −140 points
• 90-day late: −100 to −180 points
• Charge-off: −100 to −200 points
• Collection: −100 to −150 points
• Bankruptcy: −130 to −240 points

How to fix:

• Set up autopay on every account (eliminates risk of missed payments)
• Keep emergency fund for at least one month of bills
• Call creditors before missing a payment — many waive late fees and don’t report
• Negotiate “goodwill” letters to remove a single late payment after on-time history

Time to recover: 6–12 months to start, 7 years for the late payment to age off.

2. Credit Utilization (30%)

Total credit card balances ÷ total credit card limits. Lower is better.

Utilization tiers:

Utilization	Score Impact
0%	Mild positive (better than expected — slightly suggests you don’t use credit)
1–9%	Optimal
10–29%	Good
30–49%	Mild negative
50–79%	Strong negative
80%+	Severe negative

How to fix:

• Pay down whichever card is closest to its limit first
• Request credit-line increases (no hard pull at most issuers)
• Pay before statement close date, not just due date
• Ask issuer to report higher mid-cycle balance only after paying down

Time to see effect: 30 days (next reporting cycle).

3. Length of Credit History (15%)

Average age of all your accounts plus the age of your oldest account.

What helps:

• Keeping old credit cards open even when not used
• Avoiding rapid account opening (lowers average)
• Becoming an authorized user on a long-history account

What hurts:

• Closing old accounts (average drops)
• Opening multiple new accounts (average drops)

Time to fix: Years. The hardest factor to move.

4. Credit Mix (10%)

Mix of revolving (credit cards) and installment (loans) accounts.

Optimal mix:

• 1+ revolving account (credit card)
• 1+ installment account (auto, personal, student, mortgage)

How to fix:

• If you only have cards, open a credit-builder loan
• If you only have loans, open a credit card
• Diversification helps but only by ~5–15 points

Time to see effect: 60–90 days.

5. New Credit / Inquiries (10%)

Number of recent hard inquiries plus new accounts opened.

Hard inquiry impact:

• Single inquiry: −5 points
• Multiple inquiries within 14 days for same loan type (FICO bundling): counted as 1
• Inquiries stay on credit report 24 months
• Score impact lasts 12 months

How to fix:

• Don’t apply for new credit for 6–12 months before a major loan
• Use soft-pull prequalification before formal applications
• Bundle rate-shopping inquiries within a 14-day window

Real Examples

Borrower A: $20K cards, 80% utilization, no late payments

Factor	Status	Estimated Score Drag
Payment history	Perfect	+0
Utilization (80%)	Severe	−80 to −120
History (5 yrs)	OK	0
Mix	Cards only	−5 to −10
Inquiries (1)	Fine	−5

Estimated FICO: 640. After paying utilization to 5%: 720+ (within 60 days).

Borrower B: One 30-day late from 2 years ago, 10% utilization

Factor	Status	Estimated Score Drag
Payment history	Single 30-day late	−20 to −40 (aging)
Utilization (10%)	Excellent	+0
History (8 yrs)	Strong	+0
Mix	Both	+0
Inquiries (0)	Excellent	+0

Estimated FICO: 730. After late ages off in 5 more years: 770+.

Common Misconceptions

Myth	Reality
Carrying a balance builds credit	False — $0 balance is best
Closing cards helps	False — hurts utilization and history
Checking your own score hurts	False — soft pull, no impact
Income affects credit score	False — income isn’t reported to bureaus
Cosigning is “harmless”	False — late payments damage cosigner’s credit

Recommended Tools

💡 Free credit monitoring: Credit Karma — VantageScore from two bureaus.

💡 Free FICO 8: Experian Free — actual FICO score from Experian.

💡 Real all-bureau FICO: myFICO Advanced — all FICO versions, all three bureaus.

FAQ — What Affects Credit Score

Q: What’s the most important factor? A: Payment history (35%). A single 30-day late payment can drop your score 60–110 points.

Q: How fast can I improve my credit utilization? A: 30 days (next reporting cycle). Drop utilization from 80% to 10% can add 60+ points.

Q: Does income affect my credit score? A: No — income isn’t reported to credit bureaus and isn’t part of any FICO formula.

Q: How long do hard inquiries hurt my score? A: 12 months for score impact, 24 months on the report.

Q: Will checking my credit score lower it? A: No — checking your own score is a soft pull. Only lender-initiated hard inquiries affect your score.

Related Reading on LoanBer

• How to Improve Your Credit Score in 90 Days
• FICO vs VantageScore
• Best Credit Score Monitoring Services
• How to Dispute Credit Report Errors
• Credit Score Ranges Explained

Bottom Line

Five factors determine your credit score: payment history (35%), utilization (30%), length of history (15%), mix (10%), and new credit (10%). The top two factors account for 65% of your score and are also the easiest to move quickly. Focus your effort there: never miss a payment, keep card utilization under 10%, and don’t apply for new credit unnecessarily.

This article is for informational purposes only and is not financial advice.