Topics Money and economics

How do credit scores work?

A credit score is a three-digit number that summarizes your credit history and estimates how likely you are to repay borrowed money. In the United States, the best-known scores run from 300 to 850. They are calculated from the information in your credit reports, which are files kept by credit bureaus. Lenders use the score, along with other details, to decide whether to lend to you and at what interest rate.

What makes it interesting is how much hangs on a number most people never see being made. Several things feed into it: whether you pay on time, how much of your available credit you use, how long your accounts have been open, the mix of credit you hold, and how often you apply for new credit. The exact formulas are proprietary, and there is more than one scoring model, so your score can differ depending on who calculates it and when.

An episode would walk through those ingredients, explain who collects the data and who uses it, and clear up common mix-ups, like what a hard inquiry is. It is explanation, not financial advice. bre's hosts are AI and can be wrong, so check anything important against your credit reports and your lender.

What a bre episode would cover

An outline of the episode bre would make for this question. Every episode is written fresh when you ask, so yours will differ.

  1. What a credit score is forLenders want a quick estimate of the risk that a borrower will not repay. A score compresses a credit history into one number to answer that.
  2. Credit reports and the bureausThe three major bureaus collect information from lenders and others. Your score is calculated from those reports, which is why errors in a report can matter.
  3. The main ingredientsPayment history, how much of your limits you use, length of history, mix of accounts and new applications all play a part. Models weigh them differently, and exact formulas are not public.
  4. Hard and soft inquiriesA lender checking your credit when you apply is different from you checking your own. The two types are treated differently.
  5. Why there is more than one scoreFICO and VantageScore are different models, and each has several versions. That is why two apps can show you two different numbers.
  6. What a score changes in real lifeScores can affect loan approval and interest rates, and sometimes things like renting. We describe how, without telling anyone what to do.
  7. Common mythsDoes checking your own score hurt it? Does income count? We separate what is well established from what is folklore.

How the episode might open

A sample exchange between two of bre’s AI hosts, bre and Tess. Both are AI; this is written by AI, as every bre episode is.

  1. breAI host

    Okay, let's start with a number most people have but have never seen being made. Your credit score. Where does it actually come from?

  2. TessAI host

    Short version: it's a grade on how you've handled borrowed money. Not your income, not your savings. Just your borrowing track record.

  3. breAI host

    So someone is keeping a file on me.

  4. TessAI host

    Yep. Credit bureaus. Lenders send them your payment history, and the score gets built from that file.

  5. breAI host

    And the part I'd ask if I were listening: is it one score, or many?

  6. TessAI host

    Many. Different models, different versions. So your number can change depending on who's looking. Annoying, but normal.

  7. breAI host

    I don't know the exact formula, and honestly nobody outside the companies does. We know the ingredients, though.

  8. TessAI host

    Right, and the ingredients are what you can actually understand. Let's go through them one at a time.

Questions people also ask

What is a good credit score?
Ranges vary by scoring model, but on the common 300 to 850 scale, higher is better, and lenders set their own cutoffs. There is no single line that counts as good everywhere. A lender may also weigh your income and other details alongside the score.
Does checking my own credit score lower it?
Generally no. Checking your own score or report is treated as a soft inquiry, which is not used in the way a lender's application check is. A hard inquiry happens when you apply for credit, and it can have a small, temporary effect.
Does income affect a credit score?
Income is not part of a credit report, so it is not a direct input to the common scoring models. Lenders may still ask about income separately when deciding whether to approve a loan.
Why do I have different credit scores?
There are multiple scoring models, such as FICO and VantageScore, each with several versions. The bureaus may also hold slightly different data about you. So the number can differ depending on which model and which report were used.

Related topics

More: all 300 topics, money and economics, or the longer reads on /learn.

bre’s hosts are AI, and every episode is generated, so they can be wrong: check anything that matters. This page outlines what an episode would cover. It is for interest and learning, not medical, financial or legal advice.