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Bank-Specific Ratios

What are Bank-Specific Ratios?

Bank-specific ratios such as net interest margin (NIM), provision for credit losses (PCL), and efficiency ratio are unique to the banking industry. Similar to companies in other sectors, banks have specific ratios to measure profitability and efficiency to suit unique business operations. Also, since financial strength is especially important for banks, there are also ratios to measure solvency.


Bank-specific Ratios - Picture of bank doors


Ratios for Profitability


1. Net Interest Margin

The net interest margin measures the difference between the interest income generated and interest expense. Unlike most other companies, a majority of a bank’s income and expenses is created by interest. Since the bank funds a majority of their operations through customer’s deposits, they pay a large amount in interest expense. Also, a large portion of their business involves the lending of money, so a majority of revenue is based on collecting interest on loans.

The formula for the net interest margin is:

Net Interest Margin = (Interest Income – Interest Expense) / Total Assets


Ratios for Efficiency


1. Efficiency Ratio

The efficiency ratio assesses the efficiency of a bank’s operation by dividing non-interest expenses by revenue.

The formula for the efficiency ratio is:

Efficiency Ratio = Non-Interest Expense / Revenue

The efficiency ratio does not include interest expense as the latter is naturally occurring when the deposits within a bank grow. However, non-interest expenses such as marketing expense or operational expense can be controlled by a company. A lower efficiency ratio shows that there is less non-interest expense per dollar of revenue.


2. Operating Leverage

Operating leverage is another measure of efficiency. It compares the growth of revenue with the growth of non-interest expense.

The formula for the operating leverage is:

Operating Leverage = Growth Rate of Revenue – Growth Rate of Non-Interest Expense

A positive ratio shows that revenue is growing faster than expenses. On the other hand, if the operating leverage ratio is negative, then the bank is accumulating expenses faster than revenue. It suggests inefficiencies in operations.


Ratios for Financial Strength


1. Liquidity Coverage Ratio

As the name suggests, the liquidity coverage ratio measures the liquidity of a bank. Specifically, it measures the ability of a bank to meet short-term obligations without any inflow of outside cash for 30 days.

The formula for the liquidity coverage ratio is:

Liquidity Coverage Ratio = High-Quality Liquid Asset Amount / Total Net Cash Flow Amount 

The 30-day period was chosen as it is the estimated amount of time it takes for the government to step in and help a bank during a financial crisis. Thus, if a bank is capable of fund cash outflows for 30 days, it will not fall.


2. Leverage Ratio

The leverage ratio measures the ability of a bank to cover its exposures with tier 1 capital. As tier 1 capital is the core capital of a bank, it is also very liquid. Tier 1 capital allows it to be converted to cover exposures easily and ensure the solvency of the bank.

The formula for the leverage ratio is:

Leverage Ratio: Tier 1 Capital / Total Assets (Exposure)


3. CET1 Ratio

The CET1 ratio is similar to the leverage ratio, and it measures the ability of a bank to cover its exposures. However, the CET1 ratio is a more stringent measurement as it only considers the common equity tier 1 capital, which is less than the tier 1 capital. Also, for the ratio’s calculation, the risk of the exposure (asset) is considered as well. A higher risk asset is given a higher weighting of risk, which lowers the CET1 ratio.

The formula for the CET1 ratio is:

CET1 Ratio = Common Equity Tier 1 Capital / Risk Weighted Assets


Other Bank-specific Ratios


1. Provision for Credit Losses (PCL) Ratio

The provision for credit losses (PCL) is an amount a bank sets aside to cover loans they believe will not be collectible. By having an amount set aside, the bank is more protected from insolvency. The PCL ratio measures the provision for credit losses as a percentage of net loans and acceptances. It allows investors or regulators to assess the riskiness of loans written by the bank in comparison to peers. Risky loans lead to a higher PCL and thus, a higher PCL ratio.

The formula for provision for credit losses ratio is:

Provision for Credit Losses Ratio = Provision for Credit Losses / Net Loans and Acceptances


Additional Resources

Thank you for reading CFI’s article on bank-specific ratios. To keep learning and developing your knowledge as a financial analyst, we recommend these resources:

  • S&P Sectors
  • Major Risks for Banks
  • Bank Balance Sheet Ratio Calculator
  • Bank Mixed Statement Ratio Calculator

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