# Marginal propensity to import

> Mediated Wiki article. Canonical URL: https://mediated.wiki/source/Marginal_propensity_to_import
> Markdown URL: https://mediated.wiki/source/Marginal_propensity_to_import.md
> Source: https://en.wikipedia.org/wiki/Marginal_propensity_to_import
> Source revision: 1351651318
> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

The **marginal propensity to import** (**MPM**) is the fractional change in [import](/source/Imports) expenditure that occurs with a change in [GDP](/source/GDP).[1] Mathematically, the marginal propensity to import (MPM) function is expressed as the ratio of the import (M) function with respect to GDP (Y).[1]

\mathrm{MPM}=\frac{\text{Δ}M}{\text{Δ}Y}
In other words, the marginal propensity to import is measured as the ratio of the change in imports to the change in GDP, thus giving us a figure between 0 and 1.[2]

## See also

- [Marginal propensity to save](/source/Marginal_propensity_to_save)
- [Marginal propensity to consume](/source/Marginal_propensity_to_consume)
- [Automatic stabiliser](/source/Automatic_stabiliser)
- [Multiplier model](/source/Multiplier_(economics))

## References

1. Fedotovs, Aleksandrs (2008). ["THE COEFFICIENT OF MULTIPLIER AND THE MARGINAL PROPENSITY TO IMPORT: THE CASE OF LATVIA"](https://www.ba.lv/wp-content/uploads/2015/08/no1jbm-2008.pdf#page=6). *Journal of Business Management*. [ISSN 1691-5348](https://www.worldcat.org/issn/1691-5348)

1. Vasilev, Aleksandar (2025). ["The Economics of an Import Tariff in the Keynesian Model: An Intermediate Macroeconomics Treatment"](https://journals.aserspublishing.eu/tpref/article/download/9253/4181). *Theoretical and Practical Research in Economic Fields*. **16** (4): 856. [doi:10.14505/tpref.v16.4(36).03](https://doi.org/10.14505/tpref.v16.4(36).03). [hdl:10419/334395](https://hdl.handle.net/10419/334395). [ISSN 2068-7710](https://www.worldcat.org/issn/2068-7710)

## Further reading

- Shinohara, Miyohei (1957). "The Multiplier and the Marginal Propensity to Import". *American Economic Review*. **47** (5): 608–624. [JSTOR 1811740](https://www.jstor.org/stable/1811740)

---
Adapted from the Wikipedia article [Marginal propensity to import](https://en.wikipedia.org/wiki/Marginal_propensity_to_import) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Marginal_propensity_to_import?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.