In the US, your credit score affects your ability to borrow, the rates you are offered, and sometimes even rental applications. Understanding how it works puts you in control of one of the most useful numbers in your financial life.
The basics
A credit score is a three-digit number — typically between 300 and 850 — that summarises how reliably you have managed credit and debt. The most widely used scoring model is FICO.
Lenders use this number to decide whether to approve a loan and what interest rate to offer. A higher score usually means lower rates and more options.
300–579
Poor
580–669
Fair
670–739
Good
740–850
Very good–Exceptional
The five factors
Each factor carries a different weight. Knowing which ones matter most helps you focus your efforts.
Payment history
35%Whether you pay on time. A single missed payment can have a meaningful negative impact — this is the single most important factor.
Amounts owed
30%Your credit utilization — how much of your available credit you are using. Keeping this below 30% is a widely recommended target.
Length of credit history
15%How long your accounts have been open. Older accounts help. Avoid closing your oldest credit card without good reason.
Credit mix
10%Having different types of credit (credit cards, car loan, student loan, mortgage) shows you can manage diverse obligations.
New credit
10%Each hard inquiry (from a new application) can slightly lower your score. Multiple applications in a short window can compound this.
Check for free
Every US consumer is entitled to one free credit report per year from each of the three bureaus through the official government-backed site.
AnnualCreditReport.com
The federally mandated free credit report site. Check all three bureaus once a year — or stagger one every four months.
Review for errors
Errors on credit reports are more common than many people realise. Disputing an error with the bureau in writing can improve your score.
Build and protect
Real-world impact
Lenders use your score to set your interest rate. A score difference of 50–100 points can mean thousands of dollars over the life of a loan.
A lower score leads to a higher APR on a car loan. The monthly payment difference can be significant over a 48 or 60 month term.
Many Ohio landlords check credit as part of the application process. A good score can be the difference between being approved or declined.
In Ohio and most US states, insurers use a credit-based insurance score when setting auto and home insurance premiums.
Official resource
The Consumer Financial Protection Bureau provides free, authoritative guidance on understanding and improving your credit — including how to dispute errors and what your rights are.
CFPB: Credit Reports & Scores