What a score is and is not
A credit score is a number generated from the contents of your credit report — the record of your borrowing held by a credit bureau. The report is the data; the score is one interpretation of it. Different models read the same report differently, which is why you can see several scores that disagree, all of them technically correct.
What a score does not contain, in most systems: your income, savings, employment, education, nationality, or the balance of your bank account. Lenders assess those separately. A high score does not mean you can afford a loan; it means you have historically repaid one.
What moves a FICO score
FICO publishes approximate weightings for its US models:
| Factor | Weight | What it means |
|---|---|---|
| Payment history | 35% | Whether you paid on time. Missed payments dominate everything else. |
| Amounts owed | 30% | Mostly credit utilisation — balances as a share of your limits. |
| Length of credit history | 15% | Age of your oldest and average accounts. |
| New credit | 10% | Recent applications and hard enquiries. |
| Credit mix | 10% | Whether you have handled both revolving and instalment credit. |
These are approximations that shift with your individual profile and score version. The ranking, however, is stable everywhere: paying on time and not being close to your limits are almost the entire game.
Utilisation, worked out
Utilisation is the one factor you can change this month.
Two cards, $10,000 of total limit
- Card A: $6,000 limit, $2,400 balance → 40% on that card
- Card B: $4,000 limit, $200 balance → 5% on that card
- Overall: $2,600 / $10,000 = 26%
Most models look at both per-card and overall utilisation, so the 40% card is doing damage even though the overall figure looks acceptable. Moving $1,000 from Card A to savings, or spreading the spending, improves both numbers.
Timing matters more than people realise. Bureaux usually see the balance reported on your statement date, not after you pay. Paying in full every month can still report high utilisation if you spend heavily before the statement closes. Paying down before the statement date reports a lower figure — same money, different snapshot.
The widely repeated “stay under 30%” is a rule of thumb, not a cliff in the model: lower is generally better, and a small non-zero balance is not penalised relative to zero in any meaningful way.
What actually helps, in order
- Never miss a payment. Automate at least the minimum on everything. A single payment reported 30+ days late is the most damaging routine event in most models, and it stays on the report for years.
- Lower reported utilisation — pay down balances, ask for a limit increase (usually a soft check, but confirm), or pay before the statement date.
- Keep old accounts open. Closing a card shortens average account age and removes its limit, raising utilisation on everything else.
- Space out applications. Rate-shopping for a single mortgage or car loan within a short window is typically counted once; scattering unrelated applications is not.
- Check your report for errors. Disputes are free and error rates are non-trivial. In the US you are entitled to free reports from each bureau via the federally authorised site; most countries have an equivalent statutory access right.
- Be patient with the rest. History length and mix improve only with time. Anyone selling a fast fix for a legitimate negative entry is selling nothing.
Outside the United States
“Credit score” means quite different things depending on where you live:
- United Kingdom: Experian, Equifax and TransUnion each publish their own score on different scales. Lenders mostly use their own internal models on the underlying report data; the consumer score is an indicator, not the thing lenders see. Electoral-roll registration matters.
- India: CIBIL, Experian, Equifax and CRIF High Mark are licensed by the Reserve Bank of India; CIBIL scores run 300–900, and free annual access is mandated.
- Canada and Australia: bureau scores on their own scales, with comprehensive credit reporting (including positive repayment data) introduced relatively recently in Australia.
- Germany: SCHUFA produces a score used widely for tenancy as well as credit.
- Many countries have no consumer score at all, or only a negative register recording defaults. In those markets lenders weigh income documentation, relationship history and collateral far more heavily, and “building credit” as an activity barely exists.
Two practical consequences: scores generally do not travel across borders, so moving country often means starting from nothing; and advice written for one market — “open a secured card”, “keep utilisation under 30%” — may be irrelevant or impossible in another.
Common myths
- “Checking my own score hurts it.” No. Your own check is a soft enquiry. Only a lender's hard enquiry for an application counts.
- “Carrying a balance builds credit.” No. Paying interest is not a scoring factor. Using the card and paying it off does the job.
- “Closing unused cards is tidy.” Tidy, but it usually raises utilisation and can shorten history.
- “Income affects my score.” Not in the score itself, though lenders certainly use it.
- “One score exists.” There are many models and versions; the number your card app shows may not be the one your mortgage lender pulls.
Sources and further reading
Primary sources are preferred: regulators, central banks, statistical agencies, tax authorities, index providers and original research. Links open on the publisher's own site; FinSage has no commercial relationship with any of them.
- FICO — “What's in my FICO Scores”, the source of the published US weightings.
- U.S. Consumer Financial Protection Bureau — credit reports and scores, including dispute rights under the Fair Credit Reporting Act.
- AnnualCreditReport.com — the site authorised by US federal law for free credit reports.
- Reserve Bank of India — directions on credit information companies, covering free annual access to Indian credit reports.