How are FICO scores calculated?

Scores can range from 300-850 and is a statistical calculation which is based upon payment history (35%), credit utilization (30%), length of history (15%), credit type (10%), and recent credit checks (10%). Items stick around for seven years; bankruptcy for ten. Maxing out a card, a 30-day late payment, debt settlement, foreclosure (150 point ding) or bankruptcy (150-200 point hit) all negatively impact FICO. Sometimes folks wonder about whether or not a short sale hurts your credit score as much as a foreclosure, and apparently it depends on whether the borrower stays current on their payments and how the lender reports the sale (try for "debt repaid in full").