Measure how demand changes as consumer income changes.
Please do not make financial decisions based on these results.
What is the Income Elasticity of Demand Calculator?
Measure how demand changes as consumer income changes. To use the Income Elasticity of Demand Calculator, enter quantity before, quantity after, income before, income after; it returns income elasticity, and shows them instantly as you type.
Where the Income Elasticity of Demand Calculator fits
Measure how demand changes as consumer income changes. The main figure it returns is the Income elasticity, worked out from the values you enter.
It belongs with the other accounting & microeconomics tools. If you are comparing options or checking a result from another angle, try the Price Elasticity of Demand Calculator, Cross Price Elasticity Calculator or the Net Profit Margin Calculator.
How to use the Income Elasticity of Demand Calculator
- Enter your numbers. The inputs are Quantity before, Quantity after, Income before ($), Income after ($). Use numbers from the same accounting period so the ratios are comparable. Fields marked optional can stay at zero.
- Read the result. The highlighted box gives the Income elasticity. Tables and charts break it down further.
- Test other scenarios. Results update as you type. Change one value at a time to see what drives the answer, and press Reset to go back to the defaults.
Formula and how it works
Example with real numbers
Here is the Income Elasticity of Demand Calculator using the default values shown in the calculator above:
Inputs
| Quantity before | 800 |
|---|---|
| Quantity after | 920 |
| Income before ($) | 40,000 |
| Income after ($) | 44,000 |
Results
| Income elasticity | 1.47 |
|---|
With these inputs the calculator returns Income elasticity: 1.47. Change any value in the calculator to see how the result moves.
What if you change one input?
Sensitivity check: raising Quantity before from 800 to 960 (about 20% higher) and leaving everything else as in the example above changes the results like this:
| Result | Example | After the change | Change |
|---|---|---|---|
| Income elasticity | 1.47 | -0.45 | -130.5% |
The input that moves the result most is the one to check twice. Change it in the calculator above to test your own case.
Method and limits. This calculator applies the formula in the section above to your inputs, in your browser; nothing you enter is stored on our servers. The result is only as accurate as the numbers you enter and the formula shown above. It is for information, not financial, tax or legal advice.
Frequently asked questions
What is an inferior good?
One with negative income elasticity: demand falls as income rises.
Which accounting standard do the formulas follow?
They use the common textbook definitions that apply under both US GAAP and IFRS unless a tool says otherwise.
Why use average balances?
Ratios that compare a flow (sales, income) with a balance (assets, equity) are fairer when the balance is averaged over the period.
Are the results guaranteed?
No. Results depend entirely on the numbers you enter and the formulas shown on this page. Please do not make financial decisions based on them alone; confirm important figures with a licensed professional.
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