Your credit score affects interest rates, housing, and job opportunities. Here’s how to understand and improve it.
Credit Score Ranges
FICO Score (Most Common)
| Range | Rating | What It Means |
|---|---|---|
| 800-850 | Excellent | Best rates on everything |
| 740-799 | Very Good | Near-best rates |
| 670-739 | Good | Approved for most products |
| 580-669 | Fair | Higher rates, some denials |
| 300-579 | Poor | Difficult to get credit |
VantageScore
| Range | Rating |
|---|---|
| 781-850 | Excellent |
| 661-780 | Good |
| 601-660 | Fair |
| 500-600 | Poor |
| 300-499 | Very Poor |
What Credit Scores Affect
Interest Rate Impact
| Score | Mortgage Rate (example) | Monthly Payment ($300K) |
|---|---|---|
| 760+ | 6.5% | $1,896 |
| 700-759 | 6.9% | $1,975 |
| 660-699 | 7.3% | $2,055 |
| 620-659 | 7.8% | $2,156 |
| 580-619 | 8.5% | $2,307 |
40-point difference = $200-$400/month extra.
Beyond Loans
| Affected By Credit | How |
|---|---|
| Apartment applications | Landlords check credit |
| Insurance rates | Lower score = higher premiums |
| Job applications | Some employers check |
| Utility deposits | May need deposit if poor credit |
| Cell phone contracts | May need prepaid |
What’s In Your Credit Score
FICO Score Breakdown
| Factor | Weight | What It Measures |
|---|---|---|
| Payment History | 35% | On-time payments |
| Credit Utilization | 30% | Balances vs. limits |
| Length of History | 15% | Age of accounts |
| Credit Mix | 10% | Types of credit used |
| New Credit | 10% | Recent applications |
Payment History (35%)
Impact of Late Payments
| Payment Status | Score Impact |
|---|---|
| On time | Positive |
| 30 days late | -60 to -110 points |
| 60 days late | More severe |
| 90+ days late | Significant damage |
| Collections | Major damage (7 years) |
| Bankruptcy | Worst (7-10 years) |
What To Do
| Action | Impact |
|---|---|
| Autopay minimum | Never miss payment |
| Payment reminders | Backup to autopay |
| Bring current | Stop further damage |
| Negotiate removal | Ask creditor to remove late marks |
Credit Utilization (30%)
Utilization = Balance ÷ Limit
| Utilization | Score Impact |
|---|---|
| 0-9% | Excellent |
| 10-29% | Good |
| 30-49% | Fair |
| 50-74% | Poor |
| 75%+ | Very Poor |
Example
| Limit | Balance | Utilization | Impact |
|---|---|---|---|
| $10,000 | $500 | 5% | Great |
| $10,000 | $2,500 | 25% | Good |
| $10,000 | $4,000 | 40% | Fair |
| $10,000 | $8,000 | 80% | Bad |
How To Improve
| Action | Result |
|---|---|
| Pay before statement | Lower reported balance |
| Request limit increase | Higher limit = lower utilization |
| Pay multiple times/month | Keep balance low |
| Spread across cards | No card over 30% |
Length of History (15%)
What Matters
| Factor | Better |
|---|---|
| Age of oldest account | Older is better |
| Average age of accounts | Older is better |
| Age of newest account | Moderate age |
What To Do
| Action | Why |
|---|---|
| Keep old cards open | Preserve history |
| Don’t close first card | Likely your oldest |
| Become authorized user | Inherit older account age |
Credit Mix (10%)
Types of Credit
| Type | Examples |
|---|---|
| Revolving | Credit cards, HELOCs |
| Installment | Mortgage, auto, student loans |
Having both types is better than just one.
What Not To Do
Don’t open accounts just for mix — only if you need them.
New Credit (10%)
Hard Inquiries
| Inquiry | Impact |
|---|---|
| Hard pull (applying) | -5 to -10 points |
| Multiple in 14-45 days | Counted as one (rate shopping) |
| Duration on report | 2 years |
| Score impact duration | ~12 months |
Soft Inquiries (No Impact)
| Type | Impact |
|---|---|
| Checking your own score | None |
| Pre-approval offers | None |
| Employment check | None |
| Account monitoring | None |
How To Check Your Credit
Free Options
| Source | How Often |
|---|---|
| AnnualCreditReport.com | Weekly (all 3 bureaus) |
| Credit Karma | Anytime (TransUnion, Equifax) |
| Discover Credit Scorecard | Anytime (free for anyone) |
| Bank/card apps | Monthly |
Credit Bureaus
| Bureau | Data May Differ |
|---|---|
| Equifax | Same accounts, timing varies |
| Experian | Same accounts, timing varies |
| TransUnion | Same accounts, timing varies |
Improving Your Score Fast
30-Day Actions
| Action | Potential Impact |
|---|---|
| Pay down cards below 30% | +20-50 points |
| Pay down cards below 10% | +30-75 points |
| Dispute errors | Varies |
| Become authorized user | +15-50 points |
90-Day Actions
| Action | Potential Impact |
|---|---|
| Perfect payment history | Gradual improvement |
| Request limit increases | Lower utilization |
| Open secured card (if no credit) | Build history |
6-12 Month Actions
| Action | Potential Impact |
|---|---|
| Consistent on-time payments | Steady improvement |
| Keep old accounts open | Preserve history |
| Let new accounts age | Average age increases |
Credit Building From Scratch
No Credit History
| Step | Action |
|---|---|
| 1 | Secured credit card ($200-$500 deposit) |
| 2 | Credit-builder loan |
| 3 | Become authorized user |
| 4 | Student credit card (if student) |
Timeline
| Milestone | Time |
|---|---|
| First score | 6 months of activity |
| Good score possible | 1-2 years |
| Excellent score possible | 3-5 years |
Common Mistakes
| Mistake | Why It Hurts |
|---|---|
| Closing old cards | Shortens history, raises utilization |
| Missing payments | 35% of score |
| Maxing out cards | High utilization |
| Too many applications | Multiple hard pulls |
| Paying only minimums | High utilization persists |
| Ignoring errors | Wrong info hurts score |
Dispute Errors
Common Errors
| Error | What To Do |
|---|---|
| Wrong accounts | Dispute with bureau |
| Wrong balances | Contact creditor and bureau |
| Late payments (paid on time) | Provide proof, dispute |
| Duplicate accounts | Request removal |
How To Dispute
| Step | Action |
|---|---|
| 1 | Get free credit reports |
| 2 | Identify errors |
| 3 | File dispute online (each bureau) |
| 4 | Provide documentation |
| 5 | Wait 30 days for response |
Bottom Line
| Priority | Action |
|---|---|
| First | Pay on time (35% of score) |
| Second | Keep utilization low (30% of score) |
| Third | Keep old accounts open |
| Fourth | Limit new applications |
| Fifth | Check reports for errors |
Key principles:
- Payment history matters most — never miss
- Keep card balances below 30% (ideally below 10%)
- Don’t close old cards
- Check your report regularly
- Dispute any errors
- Building credit takes time — start now