How are credit scores calculated?
The methods of calculating your credit score may differ slightly depending on the credit bureau. When obtaining your score from one of the Credit Bureaus it is important to understand that your score does not come directly from FICO®. It is adapted to each bureau and is given its own name: Equifax uses "Beacon", Trans Union uses "Empirica", and Experian uses "Experian/Fair Isaac." These scores are also referred to as your "Bureau Scores."

Since your score is derived from your bureau data, it will change every time your reports change. However your score is calculated, it will always take into consideration many categories of information. No single piece of information or factor determines your score. As the information in your credit report changes, the importance of one or several factors may change in your credit score. Lenders look at many things when making a credit decision, including your income and the kind of credit you are applying for. However, your credit score does not reflect these facts as it only evaluates the information retained by the credit reporting agency.
What factors affect your credit score?
There are five factors which are used in credit scoring calculations that determine your overall credit score.
1. Previous credit performance (payemtn history) 35%
A lender wants to know what your payment history is like. Have you paid everything on time, are you late on anything now, and so on. Your payment history is just one piece of information used in calculating your score, although it can be very important.
  • Payment history on your accounts. These include credit cards, retail accounts (department store credit cards), installment loans, finance company accounts, and mortgage loans.
  • Collection items and Public records. This includes judgments, bankruptcies, suits, liens, collection items, and wage attachments. Most of these are considered quite serious, although older items count less than recent ones.
  • Negative information/late pays are determined using three factors.
    • Recency - How long ago was the last delinquency? How old is the late pay?
      A 30-day late payment made just a month ago will effect your score much more than a 90-day late payment from five years ago.
    • Severity - What level of delinquency was reached?
      How late was the payment made? 30 days, 60 days, 90 days or worst of all, is the payment still outstanding?
    • Prevalence - How many credit obligations have been delinquent?
      The amount of negative items as compared to your total amount of available credit. For instance, 5 accounts showing 3 late payments is much worse than 10 accounts showing 4 late payments. One of the biggest sub factors is how many accounts show no late payments.
2. Current level of indebtedness (amount owed) 30%
How much is too much? Can the borrower pay me and still afford to pay their other bills? These are the types of questions that most borrowers want to know and the answers are almost as important as your previous credit history.
  • Total amount owed on all open accounts. Paying off your credit cards in full every month does not mean that they won't show a balance on your report. Your total balance on your last statement is generally the amount that will show in your credit report.
  • Specific types of accounts, such as credit cards and installment loans are scored differently and in conjunction with the overall amount owed on all open accounts. This also factors into your balance on each specific type of account. For instance; you have a credit card with a very small balance and no late payments. Even though the balance is low, this still looks very good as it shows that you are able to manage your credit responsibly.
  • How many accounts do you have open and how many have balances? A large number of open accounts, even with small balances, can indicate a higher risk of over-extension. This is weighted in your credit score but most lenders use their own discretion as they have access to your income amount. For the most part, it is good not to have too many credit card accounts. For most consumers, three credit card accounts should be the maximum.
  • How much of the total credit that is available to you are you using? In other words, Are you close to maxing out? For example, if you have a credit card with an available credit line of $1,000 dollars and you have a current balance of $850.00 or more, then you are nearly "maxed out." Several credit cards or other debts with balances approaching the credit limit will affect your score negatively, even if you have made your payments responsibly. Your credit score will factor your overall ratio of debt to your overall limits.

    Example
    OVERALL RATIO
    ACCOUNTAMOUNT OWEDLIMIT/LOAN ACCOUNTPERCENTAGE
    Visa$500$1,00050%
    MasterCard$50$1,0005%
    Car loan$11,000$25,00044%
    Home loan$95,000$145,00065%
    TOTAL$106,550$172,00061%
3. Amount of time credit has been in use (length of credit) 15%
Generally speaking, the longer the credit history the better the score. However, this factor only makes up 15% of your total score so even young people, students, or others with short histories can still score high overall as long as the other factors show well. If you are new to credit than there is little you can do to improve this part of your score. Open an account and be patient.
  • How long your credit accounts have been open, or the number of months you have been in the credit bureau's file.
  • The age of your oldest account and the average age of all your accounts are taken into consideration.
  • How long it has been since you used certain accounts as well as the mix of older and new trade lines.
4. Pursuit of new credit 10%
Credit is much more popular today. Just look at the number of credit card offers you get via the internet and in the mail. Consumers can now shop for credit and find the best terms to meet their needs. Each time someone runs a credit check on you, it creates an inquiry.

Fair Isaac has changed some of its calculations to account for these new trends. Specifically, they treat a group of inquiries ñ which probably represents a search for the best rate on a single loan ñ as though it was a single inquiry (note: this only applies to auto or mortgage loan inquiries). For example, auto loan inquiries that were within 30 days of each other count as one inquiry.

As a reasonable measure you should avoid unnecessary inquiries. The system is designed to take into account rate shopping but things like applying for credit card offers will add inquiries to your file.
5. Types of credit experience 10%
A healthy mix of different types of credit include installment loans and revolving loans. Installment loans allow you to repay the loan over a specific period of time with set monthly payments (home mortgages, auto loans, and personal loans). A revolving loan allows you to repay the loan without a specific set of payments and the loan remains fully open as long as you have not reached the limit of the line of credit (retail accounts, credit cards, and home equity lines).

This score is not normally a key factor in determining your score but it can help a close score. It's not a good idea to try and open different types of accounts just to try and make this factor better. It will likely reduce your score in other areas. You should never open accounts you don't intend to use.

What type of accounts you have, and how many, can make a big difference. The optimal ratio of installment versus revolving accounts depends on your profile and differs from person to person. One factor that seems to have significant influence is your percent of open installment loans. Too many can lower this portion of your score.
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