According to Fair, Isaac Company, the following is a comprehensive list of factors that are considered when calculating a FICO score.
PAYMENT HISTORY: 35%
Account payment information on specific types of accounts (credit cards, retail accounts, installment loans, finance company accounts, mortgage, etc.)
Presence of adverse public records (bankruptcy, judgments, suits, liens, wage attachments, etc.) collection items, and/or delinquency (past due items)
Severity of delinquency (how long past due)
Amount past due on delinquent accounts or collection items
Time since (recency of) past due items (delinquency), adverse public records (if any), or collection items (if any)
Number of past due items on file
Number of accounts paid as agreed
OUTSTANDING DEBT: 30%
Amount owing on accounts
Amount owing on specific types of accounts
Lack of a specific type of balance, in some cases
Number of accounts with balances
Proportion of credit lines used (proportion of balances to total credit limits on certain types of revolving accounts)
Proportion of installment loan amounts still owing (proportion of balance to original loan amount on certain types of installment loans)
CREDIT HISTORY: 15%
Time since accounts opened
Time since accounts opened, by specific type of account
Time since account activity
INQUIRIES AND NEW ACCOUNTS: 10%
Number of recently opened accounts, and proportion of accounts that are recently opened, by type of account
Number of recent credit inquiries
Time since recent account opening(s), by type of account
Time since credit inquiry(s) NOTE: Mortgage and Auto industry inquiries are ignored for the past 30 days from access, and all inquiries from these industries in any 14-day period beyond 30 days are deduped as only one.
Re-establishment of positive credit history following past payment problems
TYPES OF CREDIT IN USE: 10%
Number of (presence, prevalence, and recent information on) various types of accounts (credit cards, retail accounts, installment loans, mortgage, consumer finance accounts, etc.)