Last reviewed: September 29, 2026
The five broad FICO score factors are payment history, amounts owed, length of credit history, new credit, and credit mix. Their commonly cited percentages describe approximate relative importance for the general population. Importance can vary with your credit profile. [1]
A common misunderstanding is calling credit utilization “30% of a FICO Score.” The actual 30% category is Amounts Owed, which includes more than utilization. [3]
Explore our credit guide for the broader topic, or use credit scores explained to interpret your score and choose your next step.
What are the five FICO score factors?
| Factor | Typical importance | What it covers |
|---|---|---|
| Payment history | 35% | How reported credit obligations have been paid |
| Amounts owed | 30% | Balances, revolving utilization, accounts with balances, and installment debt |
| Length of credit history | 15% | Account ages and the length of your reported credit experience |
| New credit | 10% | Recent account openings and credit inquiries |
| Credit mix | 10% | Experience with different types of credit accounts |
These categories help explain the information FICO evaluates. They do not reveal its proprietary scoring formula. [1] If you are new to the topic, start with what a credit score measures.
The Rich Guy Math: why 35% does not mean 297.5 points
Consider this calculation:
850 × 35% = 297.5
The arithmetic is correct. But it does not establish that payment history is worth exactly 297.5 FICO points.
That conclusion assumes the score consists of five fixed point buckets. The published percentages describe category importance, which FICO says can vary by credit profile. They cannot be used to calculate a personal score. [1]
The lesson: check the model assumption before trusting the result. Accurate multiplication cannot turn an importance estimate into a scoring formula.
Factor 1: payment history — about 35%
Payment history examines how you have paid reported credit obligations. It is the largest of the five categories for a typical FICO Score. Relevant information can include: [2]
- Accounts paid as agreed.
- How overdue payments have become.
- Past-due amounts and the number of delinquent items.
- The time since delinquencies, collections, or bankruptcy information appeared.
A late payment does not have one universal point cost or guaranteed recovery timeline. Its effect depends on the full profile. [1] Likewise, an absence of late payments does not guarantee a perfect score because the other factors still matter. [2]
Check whether payment records are accurate and whether upcoming obligations have a clear payment plan. Our payment history guide explains this category in more detail.
Factor 2: amounts owed — about 30%
Amounts Owed covers several characteristics of reported debt: total balances, balances by account type, the number of accounts with balances, revolving utilization, and the amount remaining on installment loans relative to their original amounts. [3]
Having debt does not automatically make someone a high-risk borrower. The structure of the reported balances matters.
Worked example: revolving utilization
Suppose an ordinary credit card has a reported balance of $1,000 and a reported limit of $5,000.
Utilization = reported balance ÷ reported limit × 100
$1,000 ÷ $5,000 × 100 = 20%
This hypothetical example calculates a ratio. It does not predict a score or establish an ideal utilization level for everyone.
Use the figures in the credit report: a reported balance can differ from the current balance in your banking app. [3] For individual-card and combined calculations, see our credit utilization guide.
Worked example: installment balances
Suppose a loan originally had $10,000 of principal and you have repaid $2,000 of principal.
$10,000 − $2,000 = $8,000 of principal remaining
The remaining principal equals 80% of the original principal. This describes an installment balance; it is not the same as 80% revolving utilization. Actual payoff amounts can also reflect interest, fees, and contract terms.
FICO considers installment balances and revolving utilization as different characteristics within Amounts Owed. [3] Read revolving versus installment credit for the account mechanics.
Factor 3: length of credit history — about 15%
FICO considers the age of your oldest account, newest account, and average account age, as well as how long particular accounts have existed. A short history does not automatically prevent a high score when the rest of the report is strong. [4]
Does closing an old card immediately erase its age?
No. FICO generally considers both open and closed accounts while they remain on the report. Closing a card does not instantly remove its age from the calculation. [5]
Closing a paid-off card can reduce available revolving credit, potentially raising overall utilization if other balances remain. That is a separate effect from account age. [5]
Account fees, spending habits, and other financial considerations also belong in a closure decision. Understanding how credit cards work can help you assess the account beyond its possible scoring effect.
Factor 4: new credit — about 10%
Opening several accounts in a short period can indicate increased risk, particularly for someone with a short credit history. [1] Recent applications and newly opened accounts are related, but they are different pieces of information.
Hard inquiries versus soft inquiries
Hard inquiries generally occur when lenders check credit for an application and can affect scores. Soft inquiries, including checking your own credit report, do not affect FICO Scores. [6] Our hard versus soft inquiry guide explains the distinction.
Hard inquiries typically remain on a report for up to two years, while FICO Scores consider inquiries from the previous 12 months. [6]
How qualifying rate shopping is treated
For qualifying mortgage, auto, or student-loan shopping, FICO can treat multiple inquiries as one within the applicable window. Older versions use a 14-day window; newer versions use 45 days. The model and loan category matter, so do not apply that rule to every type of application. [6]
Factor 5: credit mix — about 10%
Credit mix concerns experience with different account types, including credit cards, retail accounts, installment loans, finance-company accounts, and mortgages. [7]
You do not need one of every type of account. [1] myFICO also cautions that taking a loan solely to add a missing account type is probably not worthwhile. Evaluate the costs and obligations of credit rather than borrowing simply to diversify a report. [7]
What FICO scores leave out
myFICO says its scores do not use your salary, occupation, employer, employment history, age, or where you live. They also exclude characteristics such as race, religion, national origin, sex, and marital status. [8]
Salary and employment information may still matter to a lender separately. A FICO Score therefore describes one part of a lending assessment, rather than your overall financial health or ability to afford a particular loan. [8]
Why the same action can produce different results
Two people who pay down the same dollar amount can have different starting balances, account ages, payment records, and recent applications. The published factor percentages cannot translate that payment into a reliable point-gain estimate.
Also identify the model, bureau, and date when comparing scores. The CFPB explains that scores can differ with the scoring model, the source information, and when the calculation occurs. [9]
To examine those inputs, follow our guide to reading a credit report.
Frequently asked questions
Is credit utilization the entire 30% category?
No. The category is Amounts Owed. Revolving utilization is one factor within it, alongside other balance characteristics. [3]
Do I need to borrow just to improve credit mix?
No. Credit mix does not require one of every account type, and adding debt solely for scoring can introduce unnecessary costs. [7]
Does checking my own credit hurt my score?
No. Checking your own credit is a soft inquiry and does not affect FICO Scores. [6]
Are these factors identical for every scoring model?
This page describes FICO’s published framework. Other models can evaluate the report differently; identify the model before interpreting its factors. [9]
Put the factors to use
Use the categories to organize a report review: payment records, balances, account dates, inquiries, and account types. Check the underlying information before treating a score change as evidence that one action worked. The useful goal is a clearer understanding of your credit profile and a next step grounded in that information.
Sources and calculation notes
- myFICO: What’s in my FICO Scores?
- myFICO: Payment history
- myFICO: Amounts owed
- myFICO: Length of credit history
- myFICO: How to decide whether to close a credit card
- myFICO: The timing of hard credit inquiries
- myFICO: Credit mix
- myFICO: What’s not in your FICO Scores
- CFPB: What is a credit score?
The calculation examples are hypothetical illustrations prepared by The Rich Guy Math. They explain arithmetic and account distinctions; they do not estimate a FICO Score.
About the author
Max Fonji is the founder and financial education writer behind The Rich Guy Math. He explains personal-finance concepts through research, calculations, and practical examples.
Educational disclosure
This article provides general education about U.S. credit scoring. It does not provide individualized financial, credit-repair, or legal advice. Scoring results, lender requirements, and account terms vary; no particular score change or lending outcome is guaranteed.