How are credit ratings calculated?

I'm aware of the ranges of scores, what percentage of your score is based on length of credit history, how you pay your bills, available credit, et cetera - so I do not need that sort of information. My question is: are you able to tell how many points a _month of positive credit_ is worth? For instance, if I continue to pay my car note on time for the next year, is there a way to tell how many points my score could increase over that time? Here's another example: Say, for instance, a 60-day past-due payment on a credit card shows up on your credit report. How much of a ding is that on your credit - or how many 'negative' points is that worth? Is there a point system out there to get an idea -- without enrolling in a monthly credit score monitoring company. Thanks!

Public Comments

1. The credit bureaus don't disclose their exact credit score calculation formulas, so it's hard to directly estimate the impact of the scenarios you laid out. However, below is the general weighting of the factors that go into a credit score calculation: 35% - An individual’s history of making credit payments on time 30% - The total amount of debt being carried along with available credit 15% - The age of an individual’s open credit lines (more history is better) 10% - The frequency with which someone applies for new credit 10% - Wild card factors such as the types of credit lines