Enter the total expenses and sales for the month into the calculator to determine the monthly expense ratio.

Monthly Expense Ratio Formula

The following equation is used to calculate the Monthly Expense Ratio.

MER = TE / NS * 100
  • Where MER is the monthly expense ratio (%)
  • TE is the total expenses in a month ($)
  • NS is the net sales in a month ($)

To calculate the monthly expense ratio, divide the total expenses by the net sales for a one-month period. Multiplying this result by 100 yields the ratio as a percentage.

What is a Monthly Expense Ratio?


A monthly expense ratio is defined as the ratio of monthly expenses to monthly net sales. This ratio is often calculated as a percentage.

How to Calculate Monthly Expense Ratio?

Example Problem:

The following example outlines the steps and information needed to calculate Monthly Expense Ratio.

First, determine the total expenses for a month. In this example, the total expenses for a month were found to be $1,000.00.

Next, determine the net sales for the same period. In this case, the net sales over the same time period were calculated to be $9,000.00.

Finally, calculate the monthly expense ratio using the formula above:

MER = TE / NS * 100

MER = 1000 / 9000 * 100

MER = 11.11%


What factors can affect the Monthly Expense Ratio?
Several factors can impact the Monthly Expense Ratio, including changes in operational costs, variations in sales volume, pricing strategies, and market conditions. An increase in expenses without a corresponding increase in sales can lead to a higher expense ratio, indicating less efficiency in converting sales into profits.

Why is the Monthly Expense Ratio important for businesses?
The Monthly Expense Ratio is crucial for businesses as it provides insight into the operational efficiency of a company. A lower ratio suggests that a company is effectively managing its expenses relative to its sales, which can lead to higher profitability. It also helps in budgeting and financial planning by identifying areas where cost reductions can be made.

Can the Monthly Expense Ratio be used for forecasting future financial performance?
Yes, the Monthly Expense Ratio can be a valuable tool for forecasting future financial performance. By analyzing trends in the expense ratio over time, businesses can identify patterns and make informed decisions about future expenses and sales strategies. However, it should be used in conjunction with other financial metrics for a comprehensive analysis.