What actually moves your FICO score, ranked by weight
The five factors, their published weightings, and the caveat most articles leave out.
On this page
FICO publishes the weightings behind its scores, and they are not evenly spread. Two categories account for 65% of the score. The other three share the rest. If you want to move a score, that is where the effort belongs.
The caveat most articles drop. FICO states these levels of importance are for the general population and "may be different for different credit profiles". Someone with a short credit history is scored differently from someone with decades of it. Treat these as a map, not a formula.
Payment history, 35%
Whether you paid on time. This is the single largest factor and the most damaging to get wrong. A payment reported 30 days late is a different category of event from paying a few days after the due date, which is usually not reported at all. The report records what the lender sends to the bureau, not how you felt about it.
Amounts owed, 30%
Mostly this is your credit utilization: balances as a percentage of limits. It is the fastest-moving part of a score because it updates whenever balances are reported, unlike history, which only improves with time. See what utilization actually does, because the common advice about it is wrong in a specific way.
Length of credit history, 15%
The age of your accounts, including the average and the oldest. This is why closing your oldest card can hurt, and why there is no shortcut. Time is the only input.
New credit, 10%
Recent applications and newly opened accounts. A hard inquiry has a small effect that fades. Several in a short window matter more, though rate shopping for a single mortgage or auto loan is typically treated as one event.
Credit mix, 10%
Whether you handle both revolving credit (cards) and installment credit (loans). This is the smallest factor and not worth taking on debt to improve.
What this means for effort
The ranking tells you where to spend attention. Never miss a payment, and keep reported balances low. Those two habits address 65% of the score. Everything else is either slow (history) or minor (mix).
You have more than one score. FICO produces multiple versions, VantageScore is a different model, and each bureau may hold slightly different data. A number from a free app is an indication, not the number a specific lender will pull.
What the weightings do not tell you
A percentage breakdown implies each category contributes a fixed number of points. It does not work that way. FICO calculates a score from your whole file at once, and the categories describe how much influence each area tends to have, not a formula you can reverse.
Two consequences follow, and both are practical:
- The same action affects different people differently. One late payment on a thin file with three accounts is far more damaging than one on a thick file with fifteen years of history. The 35% figure is an average across the population, not a promise about you.
- You cannot reliably predict a point change in advance. Anyone quoting an exact number of points for an action is guessing. Direction is predictable; magnitude is not.
Score ranges, and where the cutoffs actually bite
The common FICO range runs 300 to 850. Lenders set their own cutoffs, so there is no universal boundary, but the practical effect is that improvements matter most near the thresholds lenders happen to use.
| Band | Typical description | Practical effect |
|---|---|---|
| 800 and above | Exceptional | Best available pricing. Further gains change little |
| 740 to 799 | Very good | Qualifies for most best-rate tiers |
| 670 to 739 | Good | Approved widely, but not always at the headline rate |
| 580 to 669 | Fair | Approvals narrow and pricing worsens noticeably |
| Below 580 | Poor | Limited options, often secured products |
The important implication: going from 810 to 830 is worth almost nothing financially, while going from 660 to 690 can change what you are offered. Effort is worth most in the middle of the range, not at the top.
The order to fix things in
- Stop new damage. Every account current, autopay on at least the minimum. Nothing else matters while payments are still being missed.
- Bring reported balances down. This is the fastest visible change, often within one statement cycle.
- Check the reports for errors. A wrongly reported late payment or an understated credit limit is free to fix and can be worth more than months of good behaviour.
- Then wait. Age and consistency are the remaining inputs, and neither can be accelerated.
Be sceptical of anything promising a fast large increase. The two fastest legitimate levers are correcting an error and lowering reported balances. Everything else takes time by construction.
Why your score differs between apps
There is no single score. FICO has released multiple versions and industry-specific variants, VantageScore is a competing model, and each bureau holds slightly different data. A mortgage lender may pull an older FICO version than the one your banking app shows. Differences of a few dozen points between sources are normal and do not mean anything is wrong.
Frequently asked questions
Which factor should I fix first?
Payment history if you have any late payments, because it carries the most weight and the damage compounds. Otherwise utilization, because it moves fastest.
Does checking my own score hurt it?
No. Checking your own credit is a soft inquiry and does not affect your score. See how to pull your reports for free.
How long do negative marks last?
Most negative information stays on a report for about seven years, and its effect fades well before it drops off. Time and consistent on-time payments are the only real remedies.
Will closing an unused card help my score?
Usually the opposite. Closing a card removes its limit, which raises your utilization, and can eventually reduce the average age of your accounts.
How often does my score update?
Whenever the underlying data changes, which is typically when lenders report, usually monthly. A score is a calculation performed on demand, not a stored value that refreshes on a schedule.
Does income affect my credit score?
No. Income is not on your credit report and is not an input to the score. Lenders consider it separately through debt-to-income ratio.
Will paying off a loan early raise my score?
Not necessarily, and it can dip slightly, because closing an installment account can reduce your credit mix and the average age of active accounts. Pay it off for the interest saving, not for the score.
Do I need a credit card to build credit?
It is the most common route because revolving accounts report monthly, but installment loans also build history. What matters is an account that reports to the bureaus and is paid on time.
Written by
Teja PagidimarriTeja Pagidimarri built 43dots to answer money questions with numbers you can check. He is a software developer, not a licensed financial advisor, so every guide here is built the way an engineer would: figures pulled from the primary source, math shown in the open, and the calculators built from the actual published formulas.
Every figure on this page was checked against the primary source linked beside it. Drafting is AI-assisted; the research, the numbers, and the final edit are mine. See our editorial policy and corrections. This is general information, not personalized financial advice.
Comments
No comments yet. Start the conversation.
Money, minus the jargon.
Plain-English guides to US taxes, credit, cards, and loans. Every figure traced to its primary source, with the math shown so you can check it.
Read more guides
