Your FICO credit score is built from five factors. In order of importance they are payment history (about 35%), amounts owed and credit utilization (about 30%), length of credit history (about 15%), credit mix (about 10%) and new credit (about 10%). Knowing this ranking tells you exactly where to focus your effort first. The five credit score factors are broken down below in order of weight, starting with the ones you can actually move.
Most people try to improve their score by doing a little of everything at once. It’s far more effective to concentrate on the two factors that make up roughly 65% of the score before worrying about the rest. This guide explains each factor in detail, shows what helps and hurts it, and gives a practical priority list you can follow whether you’re starting from zero or rebuilding.
1. Payment History — About 35%
Payment history is the largest factor by a wide margin. It records whether you’ve paid your bills on time across every reporting account: credit cards, auto loans, student loans, mortgages, personal loans and credit-builder loans. It also includes the most serious negative events — accounts sent to collections, charge-offs, repossessions, foreclosures and bankruptcies.
Late payments are generally not reported until they are 30 days past due. Once reported, they’re categorized by severity: 30, 60, 90 or 120+ days late, with longer delinquencies doing more damage. A single 30-day late payment can drop a good score significantly and can remain on your report for up to seven years, although its impact fades over time. See our guide to how long late payments stay on your report.
How to optimize it: set up autopay for at least the minimum payment on every account. You can always pay more manually, but autopay guarantees that a busy month never turns into a reported late payment.
2. Amounts Owed and Credit Utilization — About 30%
This factor looks at how much you owe, and in particular the share of your available revolving credit you’re using. That share is your credit utilization ratio. If you have a $1,000 limit and a $300 reported balance, your utilization is 30%. Scoring models look at utilization per card and across all cards combined.
Utilization is the fastest-moving factor. Unlike payment history, which takes months or years to repair, utilization is recalculated every time a new balance is reported. Lowering a high balance can improve your score within a billing cycle or two. The key detail is that issuers usually report your statement balance — not the balance after you pay — so paying before the statement closes is what keeps reported utilization low. See our full guide to credit utilization.
How to optimize it: keep reported balances under 30% of limits, and ideally under 10%. Make a payment a few days before your statement closing date, ask for credit limit increases once your account is in good standing, and avoid closing unused no-fee cards.
3. Length of Credit History — About 15%
This factor considers how long your accounts have been open: the age of your oldest account, your newest account, and the average age of all accounts. It also looks at how recently accounts have been used. It’s the one factor you can’t speed up directly — it simply requires time.
How to optimize it: open your first account as early as responsibly possible, keep your oldest accounts open, and avoid opening many new accounts in a short period, which lowers your average age. If you’re starting out, being added as an authorized user on a family member’s older, well-managed account can add history to your file.
4. Credit Mix — About 10%
Credit mix reflects the variety of account types on your file. Revolving credit includes credit cards and lines of credit; installment credit includes auto loans, student loans, mortgages and credit-builder loans. A file that shows you can manage both types responsibly can score slightly better than an otherwise identical file with only one type.
How to optimize it: never take on debt you don’t need just to improve credit mix. If you’re building from scratch, however, pairing a secured card with a small credit-builder loan is an inexpensive way to add both types. See our comparison of the two.
5. New Credit — About 10%
This factor considers recently opened accounts and recent hard inquiries — the credit checks lenders perform when you apply. A single inquiry usually has a small, temporary effect. Several inquiries in a short window can look like you urgently need credit, which scoring models treat as a higher risk. There are exceptions for rate shopping: multiple mortgage or auto loan inquiries within a short period are typically counted as one. See our guide to hard pulls vs. soft pulls.
How to optimize it: apply only for credit you need, space applications out by several months, and use pre-qualification tools, which rely on soft pulls, before formally applying.
Putting It Together: Where to Focus First
| Priority | Factor | Speed of Impact | First Action |
|---|---|---|---|
| 1 | Payment history | Slow to build, fast to damage | Autopay on every account |
| 2 | Utilization | Fast — one to two cycles | Pay before the statement closes |
| 3 | Length of history | Only time | Keep old accounts open |
| 4 | Credit mix | Moderate | Add a builder loan if starting out |
| 5 | New credit | Fades within months | Space out applications |
If you’re starting from scratch or rebuilding, the math is clear: get one reporting account open — a secured credit card is usually the easiest — pay it on time and keep its balance low. The other three factors largely take care of themselves with patience and consistency.
What Isn’t Part of Your Score
Several things people assume matter are not factors at all: income, job title, savings, age, race, religion, national origin, marital status and whether you receive public assistance. Checking your own score is also not a factor — it’s a soft inquiry. Lenders may consider income and employment separately when deciding whether to approve you, but those details don’t change the score itself.
Frequently Asked Questions
Does income affect my credit score?
No. Income isn’t a scoring factor, although lenders may review it separately when making approval decisions.
Can one factor offset a weakness in another?
To an extent. Strong payment history and low utilization can offset a short history or thin credit mix, because they carry much more weight.
Do the percentages apply to everyone the same way?
The percentages are general guidelines. The actual importance of each factor can vary depending on your overall profile, especially for people with very short histories.
Does checking my own score affect any of these factors?
No. Checking your own score is a soft inquiry and never affects your score.
Which factor should I fix first after a setback?
Stop any further late payments immediately, then lower utilization. Those two actions protect and rebuild the largest parts of your score.
How the Factors Interact
The five factors aren’t calculated in isolation. A new account, for example, touches three of them at once: it adds an inquiry (new credit), lowers your average account age (length of history) and adds available credit that can reduce utilization. Whether the net effect is positive or negative depends on your starting point. For someone with a thin file, the added available credit and a new reporting account often outweigh the small inquiry and age effects within a few months. For someone with a long, established file, a new account may produce a brief dip with little long-term change.
Similarly, paying off and closing an old card can lower balances, but it also removes available credit and, eventually, an aged account. Thinking through which factors an action affects helps you predict whether it will help or hurt.
Priorities for Different Starting Points
No credit history: the only urgent task is opening one reporting account and paying it on time. Length of history can’t begin until an account exists.
Thin file with a few months of history: protect payment history above all, keep utilization under 10%, and consider adding a second account type after six months.
Rebuilding after negative marks: stop further late payments, dispute any errors and lower utilization. Time will reduce the weight of older negatives.
Established file seeking a higher score: focus on utilization and avoiding unnecessary applications before major loans.
How often should I check my progress on these five factors?
Once a month is enough. Review your score and your reported balances right after your statements close, and pull your full credit reports a few times a year to confirm payment history and account details are accurate.
Which Credit Score Factors to Fix First
Payment history and utilization together account for roughly two-thirds of a FICO score, so they deserve two-thirds of your attention. The remaining credit score factors reward patience rather than action: age of accounts and credit mix improve mostly by leaving good accounts open and untouched.
Sources and Further Reading
- myFICO: What Is in Your Credit Score
- CFPB: How Do I Get and Keep a Good Credit Score?
- CFPB: Credit Reports and Scores
This article is for general educational purposes and isn’t financial advice. Exact scoring weights are model-specific and can vary. See our Advertising Disclosure for how this site is compensated.