How to Calculate Income Elasticity of Demand from the Demand Function?

The income elasticity of demand is a ratio between the quantity of a particular product or service and a change in the real income. The rest of the things remain constant, and it may be negative or positive, or even non-responsive for some goods. The consumer’s income & the demand for the product are directly linked with each other, and both are dissimilar to the equation of price demand.

A standard formula is used to calculate the income elasticity of demand, which is the percentage increased in the quantity of product demand divided by the rise in sales rate. Regarding the income elasticity of demand, we can say that a particular product represents the essential needs or luxuries. Doing the calculations on paper to calculate the elasticity of demand for income might be tricky for you. You can try an online income elasticity of demand calculator helps you to figure out the sensitivity of demand to the difference in the purchaser’s income.

Understanding the Income Elasticity of Demand:

The income elasticity of demand determines the responsiveness of demand for certain products to the change in the income of the consumers. The calculation of the responsiveness of income elasticity becomes problematic when it comes to its manual calculations. You can get the assistance of an online income elasticity calculator to estimate the demand of a product depending on the consumer income.

The higher income elasticity of demand in the absolute terms for a specific product is the more prominent consumer response in their buying habits, and it depends on the income changes. Usually, businesses estimate the income for the elasticity of demand for the products to predict the effects of the business cycle on the sales of products. To understand the business cycle, you can consider the demand percentage calculator that determines the percentage change in the quantity of demand, the percentage change in the income, and final & initial revenues.

Calculation of Income Elasticity of Demand:

Let’s suppose a local car dealership gathers data on changes in the product demand and income of the consumer for the cars for a specific year. When the actual income average of the consumers falls from 50k to 40k dollars, the demand for cars drops from 10k to 5k units sold, and all the other things remain constant or unchanged.

Here, the income elasticity of demand is measured by taking the negative 50 percent change in the demand, a fall of 5k divided by the initial demand of 10k cars, and dividing it with the 20 percent of change in the actual income and the change in the income of $10,000 divided by the initial revenue of $50,000. It produces an elasticity of 2.5, and it indicates the local consumers are specifically sensitive to the change in the actual income when it comes to purchasing the cars. When it comes to manual calculation, it becomes complex, but the income elasticity of the demand calculator makes the calculations easier.


If the value for the elasticity of demand is positive, then the product is said to be elastic. It implies that for each one percent increase in the income, the purchasers will demand 105x the amount of product. So, if the average income is 100k dollars and people will demand six meals per week at that level of income, they will now demand nine meals if the income rose to 101k dollars. Instead of doing the manual calculation, you can perform these tough calculations on the income elasticity of the demand calculator.

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