How CIBIL Score Is Calculated: Factors, Weights and Myths

Your CIBIL score is calculated by TransUnion CIBIL from the information in your credit report: whether you pay on time, how much of your credit limits you use, the mix and age of your loans and cards, and how often you have applied for new credit recently. CIBIL does not publish exact weights for these factors, but payment history is clearly the most important. Your income, savings and bank balance are not part of the calculation.

Where the data comes from

Every regulated lender in India, including banks, NBFCs, housing finance companies, small finance banks and co-operative banks, must report the credit accounts of its borrowers to all four credit information companies: TransUnion CIBIL, Experian, Equifax and CRIF High Mark. Since 1 July 2026, under RBI's amended Credit Information Reporting Directions, lenders send updates on four fixed dates each month (the 9th, 16th and 23rd, and the last day of the month).

For each loan or card, the report shows:

• Lender, account type and the date it was opened
• Sanctioned amount or credit limit, and current balance
• A month-by-month payment record, including days past due (DPD)
• Status such as standard, settled, written-off or closed
• Enquiries made by lenders when you applied for credit

CIBIL's scoring model reads this data and turns it into a number between 300 and 900. Because each bureau has its own model and its data can differ slightly, your Experian or CRIF score will rarely match your CIBIL score exactly.

The factors and their approximate weight

CIBIL lists the factors that influence the score but does not publish official percentages. The weights below are rough industry estimates widely quoted by lenders and finance sites. Treat them as a guide to relative importance, not as CIBIL's formula.

1. Payment history

This carries the most weight. Each month the lender reports whether you paid on time. A "000" or "STD" in the payment row means on time; numbers such as 030, 060 or 090 show how many days you were late. One 30-day delay can cost a noticeable number of points, and the damage grows with the length of the delay and how recent it is. Settled, written-off and suit-filed accounts are among the most serious negatives because they show the lender did not recover its money in full.

2. Credit utilisation

Utilisation is the share of your total credit card limit that is being used when the lender reports the balance.

Example: Priya has two cards with limits of ₹1,00,000 and ₹50,000, a total of ₹1,50,000. Her statement balances are ₹45,000 and ₹30,000, a total of ₹75,000.

Utilisation = ₹75,000 ÷ ₹1,50,000 × 100 = 50%

Even if she pays the full bill on the due date, the high reported balance signals heavy reliance on credit. If she pays ₹35,000 before the statement dates, the reported balance falls to ₹40,000 and utilisation to about 27%, below the widely used 30% guide. Our article on the credit utilisation ratio explains how to time this.

If Priya instead paid only the minimum due, she would avoid a late mark but the unpaid ₹75,000 would keep utilisation high and attract interest of up to about 3.75% a month (plus GST) on many cards. Use the credit card interest calculator to see what a revolving balance really costs.

3. Credit mix and length of history

A record of handling both secured loans (home, car, gold) and unsecured credit (cards, personal loans) well tends to help. So does an older history: a card you have used responsibly for ten years says more than one opened last month. This is why closing your oldest card can backfire.

4. New credit and enquiries

Every time you apply for a loan or card, the lender pulls your report and a hard enquiry is recorded. A few spread over time are normal. Many in a short window, especially for unsecured loans, look like credit hunger and can lower the score. Checking your own score is a soft enquiry and has no effect; see hard inquiry vs soft inquiry for the full difference.

What does not affect your CIBIL score

Many people worry about things that are not in the credit report at all:

One caution: a bounced EMI auto-debit or cheque is not reported as a "bounce", but if it leaves the instalment unpaid past the due date, the lender will report the delay as DPD. See EMI bounce charges and consequences.

Worked example: two borrowers, same income

Anil and Meena both earn ₹90,000 a month.

Their incomes are identical, but Meena's report shows a clean payment record, low utilisation, a long mixed history and few enquiries. Anil's shows a recent late payment, high utilisation and a burst of applications. Meena would very likely score well above 750 and Anil well below, even though income played no part. Anil's quickest wins are lowering utilisation and pausing applications; the late payment will fade only with time.

Loans you guarantee or co-sign also count

Your score is based on every account linked to your PAN, not only loans in your own name. If you are a co-borrower on a home loan or a guarantor on a relative's business loan, that account and its repayment record can appear on your report. A missed EMI by the main borrower can then pull your score down even though you never missed a payment yourself. Before co-signing, ask for regular updates on the account, or check your own report every few months.

Why your score changes between checks

• A new balance or payment was reported on one of the four monthly reporting dates.
• An account aged, or a past late payment became less recent.
• A new enquiry or account was added.
• You checked a different bureau, or an app showing a score from a different date.

If a change looks wrong, download your full report. Errors happen, and RBI rules give you a right to correction within 30 days or compensation of ₹100 per day of delay. Our guide on how to check your CIBIL score free covers getting the report, and how to improve your CIBIL score covers disputes and fixes. For what the final number means, see what is a good CIBIL score.

Key takeaways

• The CIBIL score comes only from your credit report, scored by TransUnion CIBIL's own model on a 300–900 scale.
• Payment history matters most, followed by credit card utilisation, then credit mix, history length and recent enquiries.
• CIBIL does not publish exact weights; percentages seen online are estimates.
• Income, savings, investments, debit cards and checking your own score do not affect it.
• Lower utilisation and fewer applications are the fastest levers; late payments fade only with time.