Credit score

"Please advise if anyone knows the mathematical formula used by credit bureaus to compute the credit score."
The formula credit bureaus use for computing credit score is closely guarded and nobody actually knows much about it. Most of the information on the web relating to credit score computation by bureaus is only an assumption and nobody can say for sure that there assumption is correct.

Miller

The model most commonly used as a basis to compute credit scores was developed by Fair Isaac Corporation (known as FICO score).

Credit score is calculated by giving weightage to various types of information appearing on your report;

Payment History - 35%:

Amounts Owed - 30%:

Length of Credit History - 15%:

New Credit - 10%

Types of Credit Used - 10%

some very good resources to get related information:

http://www.atg.wa.gov/askcolumn.aspx?&id=11934

http://www.privacyrights.org/fs/fs6c-CreditScores.htm