How credit scores work
Credit scores are 3-digit numbers (300-850) that predict how likely you are to repay debt. Understanding the 5 factors that make up your score helps you improve it strategically.
QUICK ANSWER: Credit scores work by analyzing payment history (35%), credit utilization (30%), credit history length (15%), credit mix (10%), and new credit (10%). FICO scores range from 300-850. Each factor is weighted differently, with payment history having the most impact. One late payment can drop your score 60-110 points, while high utilization (above 30%) can cost 20-50 points.
How do credit scores work?
Credit scores work by analyzing 5 factors from your credit reports:
- Payment history (35%): Whether you pay bills on time
- Amounts owed (30%): Credit utilization percentage
- Length of history (15%): Age of your oldest account
- Credit mix (10%): Types of credit (cards, loans, mortgage)
- New credit (10%): Recent inquiries and new accounts
FICO scores range from 300-850. Scores above 670 are considered good.
Credit score ranges explained
Credit score ranges: Exceptional (800-850), Very Good (740-799), Good (670-739), Fair (580-669), Poor (300-579). Scores above 740 qualify for best rates. Each range determines your interest rate eligibility and loan approval odds.
| Score Range | Rating | What It Means | Interest Rate Impact |
|---|---|---|---|
| 800-850 | Exceptional | Best available rates on all credit products | Lowest rates (prime) |
| 740-799 | Very Good | Access to competitive rates | Below average rates |
| 670-739 | Good | Considered acceptable borrower | Average to slightly above |
| 580-669 | Fair | Subprime borrower, higher risk | High interest rates |
| 300-579 | Poor | Difficulty getting approved | Very high or no approval |
📊 Pinnacle Credit Repair's 2026 Credit Score Impact Study
Original research from 5,200+ client cases (2012-2026):
- Late payment impact: Average score drop of 87 points for first 30-day late (range: 60-110 points)
- Utilization sweet spot: Clients with 1-10% utilization averaged 798 FICO score vs. 30-50% utilization at 658 average
- Removal success rates: 76% of disputed late payments removed within 30 days using FCRA violations
- Score recovery timeline: Average 142-point increase in 23 days after removing 3-5 inaccurate items
- Bureau inconsistencies: 89% of clients had different negative items across the 3 bureaus
Data source: Internal analysis of 5,200 client cases, Pinnacle Credit Repair (2012-2026). This data is unique to Pinnacle and unavailable elsewhere.
The 5 factors that determine your credit score
The 5 credit score factors: (1) Payment history - 35% of score, tracks on-time payments; (2) Amounts owed - 30%, measures utilization; (3) Length of history - 15%, average account age; (4) Credit mix - 10%, variety of account types; (5) New credit - 10%, recent inquiries. Combined, these create your 300-850 FICO score.
FICO scores are calculated using these weighted factors from your credit reports:
Payment History
Most important factor. Tracks whether you pay bills on time.
What helps:
- Zero late payments
- No collections or charge-offs
- No bankruptcies
What hurts:
- 30-day late: -60 to -110 points
- 90-day late: -120 to -180 points
- Collections: -50 to -100 points
Amounts Owed
Second most important. Measures credit utilization (balance ÷ limit).
What helps:
- Utilization below 30%
- Utilization below 10% (optimal)
- Low balances across all cards
What hurts:
- Utilization above 50%: -20 to -50 points
- Maxed out cards: -50 to -100 points
Length of History
Average age of accounts. Older is better.
What helps:
- Oldest account 10+ years
- Average age 5+ years
- Keep old accounts open
What hurts:
- Closing oldest accounts
- All new accounts (thin file)
Credit Mix
Types of credit you manage. Diversity helps.
What helps:
- Credit cards + installment loan
- Mortgage + auto loan
- 3+ different account types
Less important:
- Only 10% of score
- Don't open loans just for mix
New Credit
Recent credit activity. Too many inquiries hurt.
What helps:
- Few hard inquiries (0-2/year)
- Rate shopping within 14-45 days
- Spacing out applications
What hurts:
- Each inquiry: -5 to -10 points
- Multiple applications in short time
Watch: How Credit Scores Are Calculated (3:47)
Video explains the 5 FICO factors and how they're weighted to create your 300-850 score.
How FICO scores are calculated
FICO calculation process: Credit bureaus compile data from lenders → FICO algorithms weight the 5 factors based on your profile → Mathematical formula produces 300-850 score → Scores recalculate monthly when bureaus receive new data. You have 3 different FICO scores (one per bureau) because lenders don't report to all bureaus equally. Scores can vary by 20-50 points across bureaus.
FICO (Fair Isaac Corporation) analyzes data from your 3 credit bureau reports (Experian, Equifax, TransUnion) using proprietary algorithms.
The calculation process:
- Data collection: Credit bureaus compile your credit history from lenders
- Data analysis: FICO algorithms weight the 5 factors based on your profile
- Score generation: Mathematical formula produces 300-850 score
- Updates: Scores recalculate when bureaus receive new data (typically monthly)
Important: You have 3 different FICO scores (one from each bureau) because lenders don't report to all bureaus equally. Scores can vary by 20-50 points across bureaus.
