Quick answer Your FICO score comes from five factors with published weights: payment history (35%), amounts owed (30%), length of credit history (15%), credit mix (10%) and new credit (10%). The first two make up two thirds of the score and are fully in your hands: always pay on time and keep utilization low, below 30% and ideally near 10%. A payment more than 30 days late can stay on your report for seven years.
Your credit score does not come out of a black box. It is the result of five factors with published, known weights, and you control three of them almost completely. Understanding how much each one weighs is the difference between doing things that raise your score and doing things that just feel productive.
This guide covers the five FICO factors, what each one is worth, and the specific action that moves it.
1. Payment history: 35 %
It is the heaviest factor and the simplest: do you pay on time? A single payment more than 30 days late can drop a good score by dozens of points, and it stays on your report for seven years.
What counts and what does not:
- Counts: payments 30, 60, 90 or more days late, accounts sent to collections, liens and bankruptcies.
- Does not count: paying a few days late. Most issuers do not report to the bureaus until day 30. You will pay a late fee, but your score never finds out.
- Counts a lot: how recent it is. A late payment from five years ago weighs far less than one from last month.
What to do: set up autopay for at least the minimum payment on every card. Automatic minimum payments do not solve interest, but they guarantee a late mark never appears on your history, which is the real damage.
2. Amounts owed: 30 %
It is not how much you owe in total: it is what percentage of your limit you are using. This is called credit utilization and it is the second most important factor.
How it works: if you have a card with a $1,000 limit and you owe $300, your utilization is 30 %. If you have two $1,000 cards and owe $300 on one, your overall utilization is 15 %.
- Under 30 % is the classic recommendation.
- Under 10 % is where high scores live.
- At 0 % across the board is not optimal either: the model wants to see you using credit, not avoiding it.
The detail almost nobody knows: your issuer reports the balance on your statement closing date, not your due date. If you pay in full every month but you do it after the closing date, the bureau still sees a high balance. Paying a few days before closing changes the number that gets reported and costs you nothing.
What to do: find out which day your statement closes and make a payment before that date. It is the fastest way to move a score.
3. Length of credit history: 15 %
This counts the age of your oldest account, your newest one, and the average of all of them. It is the factor you cannot speed up: it only comes with time.
What you can do is avoid destroying it:
- Do not close your oldest card, even if you do not use it. Closing it loses that age and its limit too, which makes your utilization worse overnight.
- If it charges an annual fee, ask the issuer to switch it to a no-fee version instead of closing it. The opening date is usually preserved.
- Use the old card a couple of times a year so the issuer does not close it for inactivity.
If you have just arrived and have no history, this factor is simply zero for now. It builds itself, month by month.
4. Credit mix: 10 %
The model likes to see that you can handle different types of credit: revolving (cards) and installment (fixed-payment loans, like a car or a personal loan).
It is the least important factor and the one most people misread. Do not take out a loan you do not need to improve your mix. The interest cost and the hard inquiry it generates are worth more than the handful of points you might gain.
If you already have or will have a loan for some other reason, this takes care of itself.
5. New credit: 10 %
Every time you apply for a credit product, a hard inquiry is generated. It drops your score by a few points and stays visible for two years, though it only affects the calculation for one.
- A single inquiry barely registers.
- Several within a few weeks does: it suggests you are looking for credit urgently.
- Checking your own report does not count. That is a soft inquiry and it does not affect your score. Check it as often as you like.
- Shopping around for the same type of loan (car, mortgage) within a short window usually counts as a single inquiry.
What to do: space applications at least three to six months apart, and use pre-approval tools, which use soft inquiries.
What to move first, depending on where you are
If you had to pick one thing:
- You have history and a middling score: attack utilization. It is the change you see in the next billing cycle, not in months.
- You had a late payment: pay everything on time from now on and wait. Time dilutes it and there is no shortcut.
- You are starting from zero: open an account that reports to the bureaus, use it lightly and pay it in full. The first six months are just about existing in the system.
- You were just declined: do not apply for another card immediately. Find out the reason (they have to give it to you in writing), fix it, and come back in a few months.
Two warnings
There is no single score. There are several versions of the FICO model plus VantageScore, and each bureau (Equifax, Experian, TransUnion) holds slightly different data. That is why your bank app can show one number and a lender another. Differences of 10 or 20 points are normal.
Be wary of anyone promising to raise it fast. "Credit repair" companies charge for things you can do yourself for free. The only thing that removes accurate negative information is time; what you can dispute for free is information that is wrong.
Conclusion
65 % of your score is two things that are in your hands today: paying on time and not using much of your limit. The other 35 % is time and restraint with new applications.
If you are starting out in the United States, the practical translation is simple: one account that reports, a small monthly charge, paid in full before the closing date, and patience. That is all.
This guide is informational and does not replace personalized financial advice. Check your free report at the official source and, for important decisions, talk to a certified counselor.
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Official sources
To check what this guide explains, these are the official references. If a rule changes, the official version always prevails.
- AnnualCreditReport.com: the only site authorized to get your free credit reports from Equifax, Experian and TransUnion.
- CFPB: credit reports and scores: what is in your report, how scores are used and how to dispute errors.
- FTC: free credit reports: how to get them at no cost and avoid look-alike sites.
