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Marginal Propensity to Save (MPS) Calculator

Finance
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This calculator determines the Marginal Propensity to Save (MPS), which measures the proportion of an increase in income that is saved rather than spent.

How To Use

How to use this calculator

Start with your values, or try a preset.

Step 1

Enter Change in Savings and Change in Income in the units shown.

Step 2

Read Marginal Propensity to Save (MPS) in the results panel. Results update as you change the inputs.

Step 3

Choose a preset to load an example, then adjust the values for your situation.

Worked Examples

Example calculations

See the inputs and their calculated results.

Scenario 1

Change in Savings: 50 USD; Change in Income: 200 USD

Marginal Propensity to Save (MPS): 0.25

Scenario 2

Change in Savings: 100 USD; Change in Income: 400 USD

Marginal Propensity to Save (MPS): 0.25

Scenario 3

Change in Savings: 25 USD; Change in Income: 100 USD

Marginal Propensity to Save (MPS): 0.25

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Important

Treat this output as a planning estimate and confirm rates, tax rules, and contract terms before making financial decisions.