Cost to income ratio: what it means and how to read it
What is Cost to income ratio?
How many rupees a lender spends on staff, branches and technology to earn ₹100 of income.
The ratio shows what share of a lender's income is used up running the business before any loan goes bad. Branch networks, staff and technology are the main costs, and they are largely fixed, so a growing lender usually sees the ratio fall as income rises faster than cost.
A business model sets the natural level. A wholesale lender with few branches can run below 35%; a retail bank building branches and digital systems may sit above 55% for years and still be making a sound investment.
How it is calculated
A worked example
Why does Cost to income ratio matter?
It measures efficiency. Two lenders with the same margin can have very different profits because one runs itself more cheaply.
What is a good Cost to income ratio?
Below 45% is efficient, 45% to 55% is typical, and above 55% is heavy unless the lender is investing in growth.
Lower is better among lenders of the same kind. For large Indian banks 40% to 50% is the usual range. Watch the direction: a ratio that keeps rising while income grows means costs are out of control.
Reading scale
What are the common mistakes with Cost to income ratio?
What is a typical Cost to income ratio in India today?
The median across the 725 listed companies that report it, as of 12 Oct 2026. Half sit above each figure and half below.