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	<id>https://wiki-dev.treasurers.org/w/index.php?action=history&amp;feed=atom&amp;title=Externality</id>
	<title>Externality - Revision history</title>
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	<updated>2026-05-01T18:57:08Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>https://wiki-dev.treasurers.org/w/index.php?title=Externality&amp;diff=19327&amp;oldid=prev</id>
		<title>imported&gt;Doug Williamson: Create page.  Sources: linked pages &amp; CFI webpage https://corporatefinanceinstitute.com/resources/knowledge/economics/externality/</title>
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		<updated>2021-01-05T19:09:50Z</updated>

		<summary type="html">&lt;p&gt;Create page.  Sources: linked pages &amp;amp; CFI webpage https://corporatefinanceinstitute.com/resources/knowledge/economics/externality/&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;Externalities are costs suffered (or benefits enjoyed) by a party unrelated to the source of the cost or benefit.&lt;br /&gt;
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Externalities may be negative or positive.&lt;br /&gt;
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Negative externalities include pollution.&lt;br /&gt;
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Postive externalities include research and development activities.&lt;br /&gt;
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They are considered to be an important source of market inefficiencies.&lt;br /&gt;
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Market interventions such as taxes and subsidies seek to discourage activities leading to negative externalities, and promote activities leading to positive externalities.&lt;br /&gt;
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==See also==&lt;br /&gt;
*[[Contagion]]&lt;br /&gt;
*[[Efficient market]]&lt;br /&gt;
*[[Moral hazard]]&lt;br /&gt;
*[[Negative externality]]&lt;br /&gt;
*[[Systemic risk]]&lt;br /&gt;
&lt;br /&gt;
[[Category:Accounting,_tax_and_regulation]]&lt;br /&gt;
[[Category:The_business_context]]&lt;br /&gt;
[[Category:Corporate_finance]]&lt;br /&gt;
[[Category:Investment]]&lt;br /&gt;
[[Category:Long_term_funding]]&lt;br /&gt;
[[Category:Compliance_and_audit]]&lt;br /&gt;
[[Category:Ethics]]&lt;br /&gt;
[[Category:Identify_and_assess_risks]]&lt;br /&gt;
[[Category:Manage_risks]]&lt;br /&gt;
[[Category:Financial_products_and_markets]]&lt;/div&gt;</summary>
		<author><name>imported&gt;Doug Williamson</name></author>
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