Factors That Affect Your Credit Score
Module: Credit and Debt • Lesson 7
Your credit score is built from specific behaviors
Credit scores are not random. They are calculated using patterns from your borrowing and repayment history.
Understanding these factors helps you control your credit instead of damaging it.
The five factors (ranked by importance)
Credit scoring models like FICO weigh these factors differently. Here is how much each one matters:
1. Payment History
2. Amounts Owed
3. Length of Credit History
4. Credit Mix
5. New Credit
Payment history and amounts owed make up 65% of your score.
1. Payment history (35%)
Most important factor
This measures whether you pay your bills on time, every time.
Lenders want to know: Can we trust you to pay us back?
What builds payment history
Paying credit cards on time
Paying loans on time
No missed payments
No late payments
Consistent payment patterns
What damages payment history
Late payments (30+ days)
Missed payments
Accounts sent to collections
Bankruptcies
Foreclosures or repossessions
How long negative marks stay
Late payments
7 years
Collections
7 years
Bankruptcy
10 years
2. Amounts owed (30%)
Second most important
This measures how much of your available credit you are using.
Key metric: Credit utilization ratio
What is credit utilization
Credit utilization = (Total balances ÷ Total credit limits) × 100
Example:
Credit limit: $5,000
Current balance: $1,000
Utilization: 20%
Best practices:
Keep utilization under 30%
Under 10% is even better
Pay balances in full monthly
High utilization (above 30%) signals financial stress to lenders.
Lower balances = better credit score
3. Length of credit history (15%)
Time matters
This measures how long you have been using credit.
Longer credit history = more reliable data = better score
What is considered
Age of oldest account
Average age of all accounts
How long specific accounts have been open
How long since you used certain accounts
How to build this factor
Start building credit early
Keep old accounts open
Avoid closing your oldest cards
Use accounts occasionally to keep them active
Be patient - time is key
This is why starting to build credit as a teen is valuable. The earlier you start, the longer your history grows.
4. Credit mix (10%)
Variety of accounts
This measures the different types of credit you have managed.
Managing different credit types shows you can handle diverse financial responsibilities.
Types of credit accounts
Revolving credit
Reusable credit with variable balances
Credit cards
Retail store cards
Lines of credit
Installment credit
Fixed loans with set payment schedules
Auto loans
Student loans
Mortgages
Important note
Credit mix is only 10% of your score. Do not open unnecessary accounts just to diversify.
Only open accounts you need and can manage responsibly. Over time, your mix will naturally improve as you take out loans for real needs like cars or education.
5. New credit (10%)
Recent activity
This measures how often you apply for and open new credit accounts.
Opening too many accounts too quickly signals risk to lenders.
What is tracked
Hard inquiries
When you apply for credit
Recently opened accounts
New credit lines or loans
Time since inquiries
How recent your applications were
What to avoid
Applying for multiple cards at once
Opening accounts you do not need
Chasing signup bonuses excessively
Applying for credit frequently
Opening new accounts when planning a major loan
Hard inquiries vs soft inquiries
Hard inquiry
When you apply for credit
Can lower your score slightly (typically 5-10 points)
Stays on report for 2 years
Soft inquiry
Checking your own credit
Does not affect your score
You can check anytime safely
Putting it all together
Focus on what matters most
1. Pay on time, every time
35% of your score
2. Keep balances low
30% of your score
3. Build history over time
15% of your score
4. Manage credit mix responsibly
10% of your score
5. Apply for new credit sparingly
10% of your score
Master payment history and utilization, and you will have a strong credit score.
Key vocabulary
Payment history
Record of whether you pay bills on time
Credit utilization
Percentage of available credit you are using
Credit history length
How long you have had credit accounts
Credit mix
Variety of credit account types you manage
New credit
Recent credit applications and accounts
Hard inquiry
Credit check when applying for credit
Soft inquiry
Credit check that does not affect score
Revolving credit
Reusable credit like credit cards
Installment credit
Fixed loans with set payment schedules
FICO score
Most common credit scoring model
Quick recap
Payment history is 35% of your score
Amounts owed (utilization) is 30%
Keep utilization below 30%
Length of credit history matters
Credit mix and new credit are each 10%
Focus on paying on time and keeping balances low
Quick Check
1. Which factor has the biggest impact on your credit score?
2. What is the ideal credit utilization percentage?
3. Which type of credit inquiry affects your credit score?
Next Lesson
How to Build Credit Safely →