Understanding Credit Scores: What Affects FICO & How to Improve It
Your credit score is a three-digit number that can cost — or save — you tens of thousands of dollars over your lifetime. Here's the full breakdown of how it works and how to make yours work for you.
The 5 Components of Your FICO Score
Whether you pay bills on time. Even one 30-day late payment can drop your score 60–110 points.
How much of your available credit you're using. Keep this under 30%; under 10% is excellent.
How long you've had accounts open. Don't close old cards even if you don't use them — it shortens your history.
Having different types of credit (cards, mortgage, auto loan) shows you can manage various debt types.
Recent hard inquiries when you apply for new credit. Multiple applications in a short period = red flag.
What Do Score Ranges Mean?
| Score | Rating | Mortgage Rate Impact |
|---|---|---|
| 800–850 | Exceptional | Best available rates |
| 740–799 | Very Good | Near-best rates |
| 670–739 | Good | ~0.5% higher rate |
| 580–669 | Fair | ~1–2% higher rate |
| 300–579 | Poor | May not qualify at all |
Fastest Ways to Improve Your Score
- Pay down credit card balances — Reducing utilization from 80% to 30% can add 50–100 points within 1–2 months.
- Become an authorized user on a family member's old card with a clean payment history.
- Never miss a payment — Set up autopay for at least the minimum to prevent any late marks.
- Don't close old accounts — Even dormant, old accounts keep your average credit age higher.
- Dispute errors — 1 in 5 credit reports has errors. Free at AnnualCreditReport.com.
- Request a credit limit increase — Raises your available credit (denominator), lowering utilization without spending less.
Frequently Asked Questions
What credit score do I need to get a mortgage?
Most lenders require a minimum of 620 for conventional loans. For the best interest rates you typically need 740 or higher. FHA loans can approve borrowers as low as 580 with a 3.5% down payment.
How quickly can I improve my credit score?
Paying down high utilization or disputing errors can show results in 30–60 days. Building a solid history of on-time payments takes 12–24 months. Going from 580 to 750 realistically takes 2–4 years of consistent positive behavior.
Does checking my own credit score lower it?
No. Checking your own score is a soft inquiry with zero impact on your score. Only hard inquiries — when you apply for new credit — temporarily lower your score by 5–10 points. Soft inquiries include checks by employers and landlords.
What is credit utilization and what ratio should I aim for?
Credit utilization is the percentage of your available revolving credit currently in use. Keep it below 30% for a good score, below 10% for an excellent score. A $500 balance on a $1,000 limit equals 50% utilization, which actively hurts your score.
Does closing old credit cards hurt my score?
Usually yes. Closing a card reduces your total available credit (raising utilization) and can shorten your average account age. Only close cards with high annual fees that clearly outweigh the benefits of keeping them open.