The exact formula is not public
Bureaus do not publish their exact scoring models. The weightings below are widely cited industry approximations and are useful as a guide to what matters most.
The five factors
- Repayment history (~35%): whether EMIs and card bills were paid on time
- Credit utilisation (~30%): how much of your available card limit you use
- Length of credit history (~15%): how long your accounts have been open
- Credit mix (~10%): a healthy balance of secured (home, auto) and unsecured (personal loan, card) credit
- New credit & enquiries (~10%): how often you have applied for new credit recently
Things that also show up
- Settled or written-off accounts: a strong negative signal even if the balance is now zero
- Loans where you are a guarantor or co-applicant: their repayment affects you too
- Errors: incorrect data can lower your score until it is corrected
What does not affect your score
- Checking your own score
- Your income or salary (lenders look at it separately)
- Savings account balances
- Debit card usage
This guide is general educational information, not financial or legal advice. Rules can change. Check the latest guidance from the RBI and the credit bureaus.