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class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Special:UserLogin&returnto=Interest" title="You are encouraged to log in; however, it is not mandatory [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Log in</span></a></li> </ul> </div> </div> <div id="p-user-menu-anon-editor" class="vector-menu mw-portlet mw-portlet-user-menu-anon-editor" > <div class="vector-menu-heading"> Pages for logged out editors <a href="/wiki/Help:Introduction" aria-label="Learn more about editing"><span>learn more</span></a> </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-anoncontribs" class="mw-list-item"><a href="/wiki/Special:MyContributions" title="A list of edits made from this IP address [y]" accesskey="y"><span>Contributions</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Special:MyTalk" title="Discussion about changes from this IP address [n]" accesskey="n"><span>Talk</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Site"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Contents" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Contents</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">hide</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">Beginning</div> </a> </li> <li id="toc-Simple_and_Compound_interest" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Simple_and_Compound_interest"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Simple and Compound interest</span> </div> </a> <button aria-controls="toc-Simple_and_Compound_interest-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle Simple and Compound interest subsection</span> </button> <ul id="toc-Simple_and_Compound_interest-sublist" class="vector-toc-list"> <li id="toc-Rule_of_72" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Rule_of_72"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.1</span> <span>Rule of 72</span> </div> </a> <ul id="toc-Rule_of_72-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Usury" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Usury"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Usury</span> </div> </a> <ul id="toc-Usury-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Other_meanings_of_interest" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Other_meanings_of_interest"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Other meanings of interest</span> </div> </a> <ul id="toc-Other_meanings_of_interest-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Notes" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Notes"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Notes</span> </div> </a> <ul id="toc-Notes-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input 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type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. Available in 72 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-72" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">72 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Rente" title="Rente – Afrikaans" lang="af" hreflang="af" data-title="Rente" data-language-autonym="Afrikaans" data-language-local-name="Afrikaans" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-als mw-list-item"><a href="https://als.wikipedia.org/wiki/Zins" title="Zins – Alemannic" lang="gsw" hreflang="gsw" data-title="Zins" data-language-autonym="Alemannisch" data-language-local-name="Alemannic" class="interlanguage-link-target"><span>Alemannisch</span></a></li><li class="interlanguage-link interwiki-am mw-list-item"><a href="https://am.wikipedia.org/wiki/%E1%8B%8E%E1%88%88%E1%8B%B5" title="ዎለድ – Amharic" lang="am" hreflang="am" data-title="ዎለድ" data-language-autonym="አማርኛ" data-language-local-name="Amharic" class="interlanguage-link-target"><span>አማርኛ</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D9%81%D8%A7%D8%A6%D8%AF%D8%A9" title="فائدة – Arabic" lang="ar" hreflang="ar" data-title="فائدة" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-arc mw-list-item"><a href="https://arc.wikipedia.org/wiki/%DC%97%DC%A2%DC%9D%DC%A2%DC%90_(%DC%A1%DC%A1%DC%AB%DC%9A%DC%98%DC%AC%DC%90)" title="ܗܢܝܢܐ (ܡܡܫܚܘܬܐ) – Aramaic" lang="arc" hreflang="arc" data-title="ܗܢܝܢܐ (ܡܡܫܚܘܬܐ)" data-language-autonym="ܐܪܡܝܐ" data-language-local-name="Aramaic" class="interlanguage-link-target"><span>ܐܪܡܝܐ</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Inter%C3%A9s" title="Interés – Asturian" lang="ast" hreflang="ast" data-title="Interés" data-language-autonym="Asturianu" data-language-local-name="Asturian" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%B8%E0%A7%81%E0%A6%A6" title="সুদ – Bangla" lang="bn" hreflang="bn" data-title="সুদ" data-language-autonym="বাংলা" data-language-local-name="Bangla" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%9B%D0%B8%D1%85%D0%B2%D0%B0" title="Лихва – Bulgarian" lang="bg" hreflang="bg" data-title="Лихва" data-language-autonym="Български" data-language-local-name="Bulgarian" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bar mw-list-item"><a href="https://bar.wikipedia.org/wiki/Zins" title="Zins – Bavarian" lang="bar" hreflang="bar" data-title="Zins" data-language-autonym="Boarisch" data-language-local-name="Bavarian" class="interlanguage-link-target"><span>Boarisch</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Kamata" title="Kamata – Bosnian" lang="bs" hreflang="bs" data-title="Kamata" data-language-autonym="Bosanski" data-language-local-name="Bosnian" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Inter%C3%A8s" title="Interès – Catalan" lang="ca" hreflang="ca" data-title="Interès" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/%C3%9Arok" title="Úrok – Czech" lang="cs" hreflang="cs" data-title="Úrok" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Rente" title="Rente – Danish" lang="da" hreflang="da" data-title="Rente" data-language-autonym="Dansk" data-language-local-name="Danish" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Zins" title="Zins – German" lang="de" hreflang="de" data-title="Zins" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Intress" title="Intress – Estonian" lang="et" hreflang="et" data-title="Intress" data-language-autonym="Eesti" data-language-local-name="Estonian" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%A4%CF%8C%CE%BA%CE%BF%CF%82" title="Τόκος – Greek" lang="el" hreflang="el" data-title="Τόκος" data-language-autonym="Ελληνικά" data-language-local-name="Greek" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Interest" title="Interest – English" lang="en" hreflang="en" data-title="Interest" data-language-autonym="English" data-language-local-name="English" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Inter%C3%A9s" title="Interés – Spanish" lang="es" hreflang="es" data-title="Interés" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Interezo" title="Interezo – Esperanto" lang="eo" hreflang="eo" data-title="Interezo" data-language-autonym="Esperanto" data-language-local-name="Esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Interes" title="Interes – Basque" lang="eu" hreflang="eu" data-title="Interes" data-language-autonym="Euskara" data-language-local-name="Basque" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%A8%D9%87%D8%B1%D9%87" title="بهره – Persian" lang="fa" hreflang="fa" data-title="بهره" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Int%C3%A9r%C3%AAt_(finance)" title="Intérêt (finance) – French" lang="fr" hreflang="fr" data-title="Intérêt (finance)" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Xuro" title="Xuro – Galician" lang="gl" hreflang="gl" data-title="Xuro" data-language-autonym="Galego" data-language-local-name="Galician" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%9D%B4%EC%9E%90" title="이자 – Korean" lang="ko" hreflang="ko" data-title="이자" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D5%8F%D5%B8%D5%AF%D5%B8%D5%BD%D5%A1%D5%A3%D5%B8%D6%82%D5%B4%D5%A1%D6%80" title="Տոկոսագումար – Armenian" lang="hy" hreflang="hy" data-title="Տոկոսագումար" data-language-autonym="Հայերեն" data-language-local-name="Armenian" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%AC%E0%A5%8D%E0%A4%AF%E0%A4%BE%E0%A4%9C" title="ब्याज – Hindi" lang="hi" hreflang="hi" data-title="ब्याज" data-language-autonym="हिन्दी" data-language-local-name="Hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Kamata" title="Kamata – Croatian" lang="hr" hreflang="hr" data-title="Kamata" data-language-autonym="Hrvatski" data-language-local-name="Croatian" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-io mw-list-item"><a href="https://io.wikipedia.org/wiki/Interesto" title="Interesto – Ido" lang="io" hreflang="io" data-title="Interesto" data-language-autonym="Ido" data-language-local-name="Ido" class="interlanguage-link-target"><span>Ido</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Suku_bunga" title="Suku bunga – Indonesian" lang="id" hreflang="id" data-title="Suku bunga" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/Vextir" title="Vextir – Icelandic" lang="is" hreflang="is" data-title="Vextir" data-language-autonym="Íslenska" data-language-local-name="Icelandic" class="interlanguage-link-target"><span>Íslenska</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Interesse_finanziario" title="Interesse finanziario – Italian" lang="it" hreflang="it" data-title="Interesse finanziario" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%A8%D7%99%D7%91%D7%99%D7%AA" title="ריבית – Hebrew" lang="he" hreflang="he" data-title="ריבית" data-language-autonym="עברית" data-language-local-name="Hebrew" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-kn mw-list-item"><a href="https://kn.wikipedia.org/wiki/%E0%B2%AC%E0%B2%A1%E0%B3%8D%E0%B2%A1%E0%B2%BF" title="ಬಡ್ಡಿ – Kannada" lang="kn" hreflang="kn" data-title="ಬಡ್ಡಿ" data-language-autonym="ಕನ್ನಡ" data-language-local-name="Kannada" class="interlanguage-link-target"><span>ಕನ್ನಡ</span></a></li><li class="interlanguage-link interwiki-lo mw-list-item"><a href="https://lo.wikipedia.org/wiki/%E0%BA%94%E0%BA%AD%E0%BA%81%E0%BB%80%E0%BA%9A%E0%BB%89%E0%BA%8D" title="ດອກເບ້ຍ – Lao" lang="lo" hreflang="lo" data-title="ດອກເບ້ຍ" data-language-autonym="ລາວ" data-language-local-name="Lao" class="interlanguage-link-target"><span>ລາວ</span></a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Usura" title="Usura – Latin" lang="la" hreflang="la" data-title="Usura" data-language-autonym="Latina" data-language-local-name="Latin" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/Procenti" title="Procenti – Latvian" lang="lv" hreflang="lv" data-title="Procenti" data-language-autonym="Latviešu" data-language-local-name="Latvian" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Pal%C5%ABkanos" title="Palūkanos – Lithuanian" lang="lt" hreflang="lt" data-title="Palūkanos" data-language-autonym="Lietuvių" data-language-local-name="Lithuanian" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Kamat" title="Kamat – Hungarian" lang="hu" hreflang="hu" data-title="Kamat" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%9A%D0%B0%D0%BC%D0%B0%D1%82%D0%B0" title="Камата – Macedonian" lang="mk" hreflang="mk" data-title="Камата" data-language-autonym="Македонски" data-language-local-name="Macedonian" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-mr mw-list-item"><a href="https://mr.wikipedia.org/wiki/%E0%A4%B5%E0%A5%8D%E0%A4%AF%E0%A4%BE%E0%A4%9C" title="व्याज – Marathi" lang="mr" hreflang="mr" data-title="व्याज" data-language-autonym="मराठी" data-language-local-name="Marathi" class="interlanguage-link-target"><span>मराठी</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Faedah" title="Faedah – Malay" lang="ms" hreflang="ms" data-title="Faedah" data-language-autonym="Bahasa Melayu" data-language-local-name="Malay" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Rente" title="Rente – Dutch" lang="nl" hreflang="nl" data-title="Rente" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ne mw-list-item"><a href="https://ne.wikipedia.org/wiki/%E0%A4%B8%E0%A4%BE%E0%A4%A7%E0%A4%BE%E0%A4%B0%E0%A4%A3_%E0%A4%B5%E0%A5%8D%E0%A4%AF%E0%A4%BE%E0%A4%9C" title="साधारण व्याज – Nepali" lang="ne" hreflang="ne" data-title="साधारण व्याज" data-language-autonym="नेपाली" data-language-local-name="Nepali" class="interlanguage-link-target"><span>नेपाली</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E5%88%A9%E5%AD%90" title="利子 – Japanese" lang="ja" hreflang="ja" data-title="利子" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Rente" title="Rente – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="Rente" data-language-autonym="Norsk bokmål" data-language-local-name="Norwegian Bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-pa mw-list-item"><a href="https://pa.wikipedia.org/wiki/%E0%A8%B5%E0%A8%BF%E0%A8%86%E0%A8%9C" title="ਵਿਆਜ – Punjabi" lang="pa" hreflang="pa" data-title="ਵਿਆਜ" data-language-autonym="ਪੰਜਾਬੀ" data-language-local-name="Punjabi" class="interlanguage-link-target"><span>ਪੰਜਾਬੀ</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Odsetki" title="Odsetki – Polish" lang="pl" hreflang="pl" data-title="Odsetki" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Juro" title="Juro – Portuguese" lang="pt" hreflang="pt" data-title="Juro" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Dob%C3%A2nd%C4%83" title="Dobândă – Romanian" lang="ro" hreflang="ro" data-title="Dobândă" data-language-autonym="Română" data-language-local-name="Romanian" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9F%D1%80%D0%BE%D1%86%D0%B5%D0%BD%D1%82%D0%BD%D1%8B%D0%B9_%D0%B4%D0%BE%D1%85%D0%BE%D0%B4" title="Процентный доход – Russian" lang="ru" hreflang="ru" data-title="Процентный доход" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Interesi" title="Interesi – Albanian" lang="sq" hreflang="sq" data-title="Interesi" data-language-autonym="Shqip" data-language-local-name="Albanian" class="interlanguage-link-target"><span>Shqip</span></a></li><li class="interlanguage-link interwiki-sd mw-list-item"><a href="https://sd.wikipedia.org/wiki/%D9%88%D9%8A%D8%A7%D8%AC" title="وياج – Sindhi" lang="sd" hreflang="sd" data-title="وياج" data-language-autonym="سنڌي" data-language-local-name="Sindhi" class="interlanguage-link-target"><span>سنڌي</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/%C3%9Arok" title="Úrok – Slovak" lang="sk" hreflang="sk" data-title="Úrok" data-language-autonym="Slovenčina" data-language-local-name="Slovak" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Obresti" title="Obresti – Slovenian" lang="sl" hreflang="sl" data-title="Obresti" data-language-autonym="Slovenščina" data-language-local-name="Slovenian" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%9A%D0%B0%D0%BC%D0%B0%D1%82%D0%B0" title="Камата – Serbian" lang="sr" hreflang="sr" data-title="Камата" data-language-autonym="Српски / srpski" data-language-local-name="Serbian" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Kamata" title="Kamata – Serbo-Croatian" lang="sh" hreflang="sh" data-title="Kamata" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="Serbo-Croatian" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Korko" title="Korko – Finnish" lang="fi" hreflang="fi" data-title="Korko" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/R%C3%A4nta" title="Ränta – Swedish" lang="sv" hreflang="sv" data-title="Ränta" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-tl mw-list-item"><a href="https://tl.wikipedia.org/wiki/Patubo" title="Patubo – Tagalog" lang="tl" hreflang="tl" data-title="Patubo" data-language-autonym="Tagalog" data-language-local-name="Tagalog" class="interlanguage-link-target"><span>Tagalog</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%B5%E0%AE%9F%E0%AF%8D%E0%AE%9F%E0%AE%BF" title="வட்டி – Tamil" lang="ta" hreflang="ta" data-title="வட்டி" data-language-autonym="தமிழ்" data-language-local-name="Tamil" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-te mw-list-item"><a href="https://te.wikipedia.org/wiki/%E0%B0%B5%E0%B0%A1%E0%B1%8D%E0%B0%A1%E0%B1%80" title="వడ్డీ – Telugu" lang="te" hreflang="te" data-title="వడ్డీ" data-language-autonym="తెలుగు" data-language-local-name="Telugu" class="interlanguage-link-target"><span>తెలుగు</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%94%E0%B8%AD%E0%B8%81%E0%B9%80%E0%B8%9A%E0%B8%B5%E0%B9%89%E0%B8%A2" title="ดอกเบี้ย – Thai" lang="th" hreflang="th" data-title="ดอกเบี้ย" data-language-autonym="ไทย" data-language-local-name="Thai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Faiz" title="Faiz – Turkish" lang="tr" hreflang="tr" data-title="Faiz" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-tk mw-list-item"><a href="https://tk.wikipedia.org/wiki/G%C3%B6terim" title="Göterim – Turkmen" lang="tk" hreflang="tk" data-title="Göterim" data-language-autonym="Türkmençe" data-language-local-name="Turkmen" class="interlanguage-link-target"><span>Türkmençe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%92%D1%96%D0%B4%D1%81%D0%BE%D1%82%D0%BE%D0%BA_(%D1%84%D1%96%D0%BD%D0%B0%D0%BD%D1%81%D0%B8)" title="Відсоток (фінанси) – Ukrainian" lang="uk" hreflang="uk" data-title="Відсоток (фінанси)" 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class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><p><b>Interest</b> is the <a href="/wiki/Price" title="Price">cost</a> for borrowing <a href="/wiki/Money" title="Money">money</a> or the payment for lending money. Usually, this is fixed as a percentage of the amount of money borrowed (which is called <i>interest rate</i>). </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Simple_and_Compound_interest">Simple and Compound interest</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Interest&veaction=edit&section=1" title="Change section: Simple and Compound interest" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Interest&action=edit&section=1" title="Edit section's source code: Simple and Compound interest"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>If the interest charged on $100 is 1 percent per year then every year the borrower must pay $1. If the $1 is not added to the amount owed then the borrower is paying simple interest. If simple interest of 1 percent is paid each year at the end of 100 years the borrower would have paid $100 in interest, $1 each year, and would still owe $100.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> If the $1 is added to the $100 the amount owed will increase to $101. 1 percent interest on $101 will be more than $1. This is called compound interest. Compound interest will cause the amount to <a href="/wiki/Growth" class="mw-disambig" title="Growth">grow</a> each year. As the amount grows larger more is paid as interest each year and added to the total. If compound interest of 1 percent is paid on a loan of $100 each year the amount of interest paid will slightly increase and after 70 years the amount owed will have grown to $200 and the interest payment will have increased to $2.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Rule_of_72">Rule of 72</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Interest&veaction=edit&section=2" title="Change section: Rule of 72" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Interest&action=edit&section=2" title="Edit section's source code: Rule of 72"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>1 percent compound interest on $100 will cause the amount to double to $200 in about 72 years. That is called the rule of 72 which can be used to figure out how fast something grows. The rule can be used to figure out how fast anything that always <a href="/wiki/Exponential_function" title="Exponential function">grows exponentially</a> at the same rate will double in size. Suppose a <a href="/wiki/Kangaroo" title="Kangaroo">kangaroo</a> grows 12 percent a year; dividing 12 into 72 gives 6, so the kangaroo will double in size in 6 years. If the kangaroo grew 6 percent a year it would take 12 years for its size to double. If it only grew 2 percent it would take 36 years for its size to double.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Usury">Usury</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Interest&veaction=edit&section=3" title="Change section: Usury" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Interest&action=edit&section=3" title="Edit section's source code: Usury"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>At some times in the past, or in some places today, it has been <a href="/wiki/Illegal" class="mw-redirect" title="Illegal">illegal</a> to make a person pay interest on a <a href="/wiki/Loan" title="Loan">loan</a>. It was, or is, against some <a href="/wiki/Religious" class="mw-redirect" title="Religious">religious</a> <a href="/wiki/Rule" class="mw-disambig" title="Rule">rules</a>. If the interest that a person must pay is too high, this is called <a href="/wiki/Usury" title="Usury">usury</a>. This is often illegal today, even when lower interest is legal. </p> <div class="mw-heading mw-heading2"><h2 id="Other_meanings_of_interest">Other meanings of interest</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Interest&veaction=edit&section=4" title="Change section: Other meanings of interest" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Interest&action=edit&section=4" title="Edit section's source code: Other meanings of interest"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Interest can also be the care or <a href="/w/index.php?title=Concern&action=edit&redlink=1" class="new" title="Concern (not yet started)">concern</a> that someone has for something or someone. If someone cares about something, they "have an interest" in that thing, or they "find it interesting". If something is beautiful, or funny, or new, that might make the thing interesting. However, a very important concern, for example <a href="/wiki/Love" title="Love">love</a> or <a href="/wiki/Hate" class="mw-redirect" title="Hate">hate</a>, is more than an interest. An interest can also be a <a href="/wiki/Task" title="Task">task</a> that someone likes to do or watch, like a <a href="/wiki/Game" title="Game">game</a> or a <a href="/wiki/Hobby" title="Hobby">hobby</a>. </p><p>If someone has a <a href="/wiki/Legal" class="mw-redirect" title="Legal">legal</a> <a href="/wiki/Rights" title="Rights">right</a> to something (usually <a href="/wiki/Money" title="Money">money</a> or <a href="/wiki/Property" title="Property">property</a>) they have an interest in that thing. This is also true for someone who shares a right with others, or a person who has a <a href="/wiki/Future" title="Future">future</a> right to something. For example, if some brothers and sisters will be given a house after their parents die, each of them "has a <a href="/wiki/Financial" class="mw-redirect" title="Financial">financial</a> interest" in the house, even if the parents are still living. </p> <div class="mw-heading mw-heading2"><h2 id="Notes">Notes</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Interest&veaction=edit&section=5" title="Change section: Notes" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Interest&action=edit&section=5" title="Edit section's source code: Notes"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r9724317">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r9724332">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFSlavin,_Steve1989" class="citation book cs1">Slavin, Steve (1989). <a rel="nofollow" class="external text" href="https://archive.org/details/allmathyoullever00slav"><i>All the Math You'll Ever Need</i></a>. John Wiley & Sons. p. <a rel="nofollow" class="external text" href="https://archive.org/details/allmathyoullever00slav/page/147">147</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0471506362" title="Special:BookSources/0471506362"><bdi>0471506362</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=All+the+Math+You%27ll+Ever+Need&rft.pages=147&rft.pub=John+Wiley+%26+Sons&rft.date=1989&rft.isbn=0471506362&rft.au=Slavin%2C+Steve&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fallmathyoullever00slav&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AInterest" class="Z3988"></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><a href="#cite_ref-2">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite id="CITEREFSlavin,_Steve1989" class="citation book cs1">Slavin, Steve (1989). <a rel="nofollow" class="external text" href="https://archive.org/details/allmathyoullever00slav"><i>All the Math You'll Ever Need</i></a>. John Wiley & Sons. p. <a rel="nofollow" class="external text" href="https://archive.org/details/allmathyoullever00slav/page/149">149</a> and 150. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0471506362" title="Special:BookSources/0471506362"><bdi>0471506362</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=All+the+Math+You%27ll+Ever+Need&rft.pages=149+and+150&rft.pub=John+Wiley+%26+Sons&rft.date=1989&rft.isbn=0471506362&rft.au=Slavin%2C+Steve&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fallmathyoullever00slav&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AInterest" class="Z3988"></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><a href="#cite_ref-3">↑</a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r9724332"><cite id="CITEREFSlavin,_Steve1989" class="citation book cs1">Slavin, Steve (1989). <a rel="nofollow" class="external text" href="https://archive.org/details/allmathyoullever00slav"><i>All the Math You'll Ever Need</i></a>. John Wiley & Sons. p. <a rel="nofollow" class="external text" href="https://archive.org/details/allmathyoullever00slav/page/153">153</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0471506362" title="Special:BookSources/0471506362"><bdi>0471506362</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=All+the+Math+You%27ll+Ever+Need&rft.pages=153&rft.pub=John+Wiley+%26+Sons&rft.date=1989&rft.isbn=0471506362&rft.au=Slavin%2C+Steve&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fallmathyoullever00slav&rfr_id=info%3Asid%2Fsimple.wikipedia.org%3AInterest" class="Z3988"></span></span> </li> </ol></div></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?useformat=desktop&type=1x1&usesul3=0" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://simple.wikipedia.org/w/index.php?title=Interest&oldid=9074915">https://simple.wikipedia.org/w/index.php?title=Interest&oldid=9074915</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Special:Categories" title="Special:Categories">Category</a>: <ul><li><a href="/wiki/Category:Economics" title="Category:Economics">Economics</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Hidden category: <ul><li><a href="/wiki/Category:Pages_using_the_JsonConfig_extension" title="Category:Pages using the JsonConfig extension">Pages using the JsonConfig extension</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> This page was last changed on 17 September 2023, at 11:41.</li> <li id="footer-info-copyright">Text is available under the <a rel="nofollow" class="external text" href="//creativecommons.org/licenses/by-sa/4.0/">Creative Commons Attribution-ShareAlike License</a> and the <a href="/wiki/Wikipedia:Text_of_the_GNU_Free_Documentation_License" title="Wikipedia:Text of the GNU Free Documentation License">GFDL</a>; additional terms may apply. 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