{"id":4797,"date":"2018-07-27T16:01:55","date_gmt":"2018-07-27T15:01:55","guid":{"rendered":"https:\/\/www.sage.com\/en-gb\/blog\/?post_type=sage_glossary&#038;p=4797"},"modified":"2026-01-29T11:36:08","modified_gmt":"2026-01-29T11:36:08","slug":"what-is-an-api","status":"publish","type":"sage_glossary","link":"https:\/\/www.sage.com\/en-gb\/blog\/glossary\/what-is-an-api\/","title":{"rendered":"What is an API?"},"content":{"rendered":"<header class=\"entry-header has-dark-background-color entry-header--has-illustration entry-header--has-illustration--generic\">\n\t<div class=\"container\">\n\t\t<div class=\"entry-header__row row align-center\">\n\t\t\t<div class=\"col col-lg-7 col-xlg-6 entry-header__content\">\n\t\t\t\t\t\t\t<div class=\"component component-single-header\">\n\t\t\t\t\t\t\t\t\t\t<div class=\"entry-header__misc text--subtitle text--uppercase text--small\">\n\t\t\t\t\t\t\t<a href=\"https:\/\/www.sage.com\/en-gb\/blog\/glossary\/\" class=\"entry-header__link\">Glossary definition<\/a>\t\t\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t<div class=\"entry-title-wrapper\">\n\t\t\t\t\t<h1 class=\"entry-title\">\n\t\t\t\t\t\tWhat is an API?\t\t\t\t\t<\/h1>\n\t\t\t\t<\/div>\n\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div>\n\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t<\/div>\n\t\t<div class=\"single-post-details container\">\n\t\t<div class=\"col\">\n\t\t\t<span class=\"reading-time\"> min read<\/span>\n\t\t<button\n\t\t\ttype=\"button\"\n\t\t\tclass=\"social-share-button button button--icon button--secondary js-social-share-button\"\n\t\t\tdata-share-title=\"What is an API?\"\n\t\t\tdata-share-url=\"https:\/\/www.sage.com\/en-gb\/blog\/glossary\/what-is-an-api\/\"\n\t\t\tdata-share-text=\"Please read this interesting article\"\n\t\t>\n\t\t\t<span class=\"social-share-button__share-label\">Share<\/span>\n\t\t\t<span class=\"social-share-button__copy-label\" hidden>Copy Link<\/span>\n\t\t\t<span class=\"social-share-button__copy-tooltip\" aria-hidden=\"true\" hidden>Copied<\/span>\n\t\t<\/button>\n\n\t\t\t\t<\/div>\n\t<\/div>\n\t<\/header>\n\n\n\n<p class=\"wp-block-paragraph\">An application programming interface (API) is the technical term describing how one software package connects to another to transfer data.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In the context of <a href=\"https:\/\/www.sage.com\/en-gb\/blog\/making-tax-digital\/\">Making Tax Digital<\/a> (MTD), HMRC use the term to describe the way software packages connect to their systems for the purposes of MTD.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In other words, all <a href=\"https:\/\/www.sage.com\/en-gb\/blog\/making-tax-digital-for-vat\/\">Making Tax Digital<\/a>-compatible software will utilise HMRC\u2019s API.<\/p>\n\n<section class=\"more-topics alignfull has-grey-light-background-color wp-block-sage-post-topics\">\n\t<div class=\"container\">\n\t\t<div class=\"row\">\n\t\t\t<div class=\"col col-12 col-lg-4\">\n\t\t\t\t<h3 class=\"more-topics__title h2\">Browse more topics from this term<\/h3>\n\t\t\t<\/div>\n\t\t\t<div class=\"col col-12 col-lg-8\">\n\t\t\t\t<ul class=\"post-tags__list\">\n\t\t\t\t\t\t\t\t\t\t\t<li class=\"post-tags__item\">\n\t\t\t\t\t\t\t<a href=\"https:\/\/www.sage.com\/en-gb\/blog\/tag\/mtd-business\/\" class=\"post-tags__link button button--secondary\">\n\t\t\t\t\t\t\t\tMaking Tax Digital for businesses\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t\t<\/ul>\n\t\t\t<\/div>\n\t\t<\/div>\n\t<\/div>\n<\/section>\n\n<div class=\"alignfull wp-block-sage-related-posts\">\n\t<section class=\"related-posts card-grid has-dark-background-color\">\n\t<div class=\"container\">\n\t\t\t\t\t<div class=\"row\">\n\t\t\t\t<div class=\"col\">\n\t\t\t\t\t<h2 class=\"related-posts__heading related-posts__heading--featured h1\">Explore more wisdom<\/h2>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\n\t\t\t<div class=\"row related-posts__featured\">\n\t\t\t\t<div class=\"col card-grid__item\">\n\t\t\t\t\t<article\n\t\tclass=\"card-post related-post related-post-0 post-30636 post type-post status-publish format-standard has-post-thumbnail hentry category-strategy-legal-operations tag-mtd-business tag-making-tax-digital-for-income-tax business_type-small-business card-post--is-clickable\"\n>\n\t<div class=\"card-post__media-wrapper\">\n\t\t<figure class=\"card-post__media\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1440\" height=\"810\" src=\"https:\/\/www.sage.com\/en-gb\/blog\/wp-content\/uploads\/sites\/10\/2026\/06\/AdobeStock_737875163-1440x810.jpg\" class=\"card-post__image\" alt=\"Man at a desk working through papers on a computer\" loading=\"lazy\" srcset=\"https:\/\/www.sage.com\/en-gb\/blog\/wp-content\/uploads\/sites\/10\/2026\/06\/AdobeStock_737875163-684x384.jpg 684w, https:\/\/www.sage.com\/en-gb\/blog\/wp-content\/uploads\/sites\/10\/2026\/06\/AdobeStock_737875163-768x432.jpg 768w, https:\/\/www.sage.com\/en-gb\/blog\/wp-content\/uploads\/sites\/10\/2026\/06\/AdobeStock_737875163-1440x810.jpg 1440w\" sizes=\"auto, (min-width: 48em) 250px, (min-width: 30em) 100vw, 100vw\" \/>\t\t\t\n\t\t\t\n\t\t\t\t\t<\/figure>\n\t<\/div>\n\n\t<div class=\"card-post__content\">\n\t\t\t\t\t<div class=\"card-post__label\">Recommended<\/div>\n\t\t\n\t\t\t\t\t<div class=\"card-post__meta\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"card-post__meta-text\"><span class=\"posted-on \"><time class=\"entry-date published\" datetime=\"2026-08-08T09:00:00+01:00\">8 August, 2026<\/time><\/span><\/span>\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"card-post__meta-text\"><span class=\"reading-time\">19 min read<\/span><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\n\t\t<p class=\"card-post__title h3\">\n\t\t\t\t\t\t\t<a\n\t\t\t\t\tclass=\"card-post__title-link\"\n\t\t\t\t\thref=\"https:\/\/www.sage.com\/en-gb\/blog\/mtd-quarterly-update\/\"\n\t\t\t\t>\n\t\t\t\n\t\t\tMTD quarterly updates: Everything you need to know\n\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/p>\n\n\t\t\n\t\t\t\t\t<p class=\"card-post__description\">\n\t\t\t\tHere\u2019s the what, why, when, and how of making an MTD for Income Tax update\u2014quarterly, or otherwise. Simple language, no jargon, just the facts.\t\t\t<\/p>\n\t\t\n\t\t\t<\/div>\n\n\t<\/article>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\n\t\t\t\t\t<div class=\"row related-posts__non-featured\">\n\t\t\t\t<div class=\"col col-12\">\n\t\t\t\t\t<h2 class=\"related-posts__heading related-posts__heading--more h4\">More on this Topic<\/h2>\n\t\t\t\t<\/div>\n\n\t\t\t\t\n\t\t\t\t\t<div class=\"col col-6 col-lg-3 card-grid__item\">\n\t\t\t\t\t\t<article\n\t\tclass=\"card-post related-post related-post-1 post-31395 post type-post status-publish format-standard has-post-thumbnail hentry category-strategy-legal-operations tag-bookkeeping tag-mtd-business tag-making-tax-digital-for-income-tax business_type-small-business\"\n>\n\t\t\t<a\n\t\t\tclass=\"card-post__link\"\n\t\t\thref=\"https:\/\/www.sage.com\/en-gb\/blog\/mtd-quarterly-updates-supercharge-your-business\/\"\n\t\t\t\t\t>\n\t\t\t<figure class=\"card-post__media\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"684\" height=\"384\" src=\"https:\/\/www.sage.com\/en-gb\/blog\/wp-content\/uploads\/sites\/10\/2026\/07\/mtd-tricks-684x384.jpg\" class=\"card-post__image\" alt=\"A small business person working on MTD\" loading=\"lazy\" srcset=\"https:\/\/www.sage.com\/en-gb\/blog\/wp-content\/uploads\/sites\/10\/2026\/07\/mtd-tricks-684x384.jpg 684w, https:\/\/www.sage.com\/en-gb\/blog\/wp-content\/uploads\/sites\/10\/2026\/07\/mtd-tricks-768x432.jpg 768w, https:\/\/www.sage.com\/en-gb\/blog\/wp-content\/uploads\/sites\/10\/2026\/07\/mtd-tricks-1440x810.jpg 1440w\" sizes=\"auto, (min-width: 48em) 250px, (min-width: 30em) 100vw, 100vw\" \/>\t\t\t\n\t\t\t\n\t\t\t\t\t<\/figure>\n\n\t\t\n\t\t\t\t\t<div class=\"card-post__meta\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"card-post__meta-text\"><span class=\"posted-on \"><time class=\"entry-date published\" datetime=\"2026-08-08T09:00:00+01:00\">8 August, 2026<\/time><\/span><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"card-post__meta-text\"><span class=\"reading-time\">9 min read<\/span><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\n\t\t<p class=\"card-post__title h5\">\n\t\t\tHow MTD quarterly updates can supercharge your business. Yes, really.\t\t<\/p>\n\n\t\t\t<\/a>\n\t\n\t\n\t\t\n\t\n\t<\/article>\n\t\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\t<div class=\"col col-6 col-lg-3 card-grid__item\">\n\t\t\t\t\t\t<article\n\t\tclass=\"card-post related-post related-post-2 post-31363 post type-post status-publish format-standard has-post-thumbnail hentry category-strategy-legal-operations tag-mtd-business tag-making-tax-digital-for-income-tax business_type-small-business\"\n>\n\t\t\t<a\n\t\t\tclass=\"card-post__link\"\n\t\t\thref=\"https:\/\/www.sage.com\/en-gb\/blog\/mtd-quarterly-updates-listicle\/\"\n\t\t\t\t\t>\n\t\t\t<figure class=\"card-post__media\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"684\" height=\"384\" src=\"https:\/\/www.sage.com\/en-gb\/blog\/wp-content\/uploads\/sites\/10\/2022\/04\/GettyImages-1207391933-684x384.jpg\" class=\"card-post__image\" alt=\"\" loading=\"lazy\" srcset=\"https:\/\/www.sage.com\/en-gb\/blog\/wp-content\/uploads\/sites\/10\/2022\/04\/GettyImages-1207391933-684x384.jpg 684w, https:\/\/www.sage.com\/en-gb\/blog\/wp-content\/uploads\/sites\/10\/2022\/04\/GettyImages-1207391933-768x432.jpg 768w, https:\/\/www.sage.com\/en-gb\/blog\/wp-content\/uploads\/sites\/10\/2022\/04\/GettyImages-1207391933-1440x810.jpg 1440w\" sizes=\"auto, (min-width: 48em) 250px, (min-width: 30em) 100vw, 100vw\" \/>\t\t\t\n\t\t\t\n\t\t\t\t\t<\/figure>\n\n\t\t\n\t\t\t\t\t<div class=\"card-post__meta\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"card-post__meta-text\"><span class=\"posted-on \"><time class=\"entry-date published\" datetime=\"2026-08-08T09:00:00+01:00\">8 August, 2026<\/time><\/span><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"card-post__meta-text\"><span class=\"reading-time\">9 min read<\/span><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\n\t\t<p class=\"card-post__title h5\">\n\t\t\t10 tips and tricks for your MTD quarterly update\t\t<\/p>\n\n\t\t\t<\/a>\n\t\n\t\n\t\t\n\t\n\t<\/article>\n\t\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\t<div class=\"col col-6 col-lg-3 card-grid__item\">\n\t\t\t\t\t\t<article\n\t\tclass=\"card-post related-post related-post-3 post-10151 post type-post status-publish format-standard has-post-thumbnail hentry category-money-matters category-strategy-legal-operations tag-bookkeeping tag-business-finances tag-mtd-business tag-need-to-know tag-tax tag-vat business_type-small-business\"\n>\n\t\t\t<a\n\t\t\tclass=\"card-post__link\"\n\t\t\thref=\"https:\/\/www.sage.com\/en-gb\/blog\/mtd-for-vat-business-tame-tax\/\"\n\t\t\t\t\t>\n\t\t\t<figure class=\"card-post__media\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"684\" height=\"384\" src=\"https:\/\/www.sage.com\/en-gb\/blog\/wp-content\/uploads\/sites\/10\/2022\/04\/GettyImages-1166663659-684x384.jpg\" class=\"card-post__image\" alt=\"\" loading=\"lazy\" srcset=\"https:\/\/www.sage.com\/en-gb\/blog\/wp-content\/uploads\/sites\/10\/2022\/04\/GettyImages-1166663659-684x384.jpg 684w, https:\/\/www.sage.com\/en-gb\/blog\/wp-content\/uploads\/sites\/10\/2022\/04\/GettyImages-1166663659-768x432.jpg 768w, https:\/\/www.sage.com\/en-gb\/blog\/wp-content\/uploads\/sites\/10\/2022\/04\/GettyImages-1166663659-1440x810.jpg 1440w\" sizes=\"auto, (min-width: 48em) 250px, (min-width: 30em) 100vw, 100vw\" \/>\t\t\t\n\t\t\t\n\t\t\t\t\t<\/figure>\n\n\t\t\n\t\t\t\t\t<div class=\"card-post__meta\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"card-post__meta-text\"><span class=\"posted-on \"><time class=\"entry-date published\" datetime=\"2026-07-31T10:48:56+01:00\">31 July, 2026<\/time><\/span><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"card-post__meta-text\"><span class=\"reading-time\">7 min read<\/span><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\n\t\t<p class=\"card-post__title h5\">\n\t\t\tMaking Tax Digital: how MTD for VAT helps your business tame tax\t\t<\/p>\n\n\t\t\t<\/a>\n\t\n\t\n\t\t\n\t\n\t<\/article>\n\t\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\t<div class=\"col col-6 col-lg-3 card-grid__item\">\n\t\t\t\t\t\t<article\n\t\tclass=\"card-post related-post related-post-4 post-10038 post type-post status-publish format-standard has-post-thumbnail hentry category-money-matters category-strategy-legal-operations tag-bookkeeping tag-business-finances tag-mtd-business tag-need-to-know tag-tax business_type-small-business\"\n>\n\t\t\t<a\n\t\t\tclass=\"card-post__link\"\n\t\t\thref=\"https:\/\/www.sage.com\/en-gb\/blog\/mtd-income-tax-needs-to-know\/\"\n\t\t\t\t\t>\n\t\t\t<figure class=\"card-post__media\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"684\" height=\"384\" src=\"https:\/\/www.sage.com\/en-gb\/blog\/wp-content\/uploads\/sites\/10\/2023\/09\/GettyImages-1413633547-684x384.jpg\" class=\"card-post__image\" alt=\"Checking products to sell to customers\" loading=\"lazy\" srcset=\"https:\/\/www.sage.com\/en-gb\/blog\/wp-content\/uploads\/sites\/10\/2023\/09\/GettyImages-1413633547-684x384.jpg 684w, https:\/\/www.sage.com\/en-gb\/blog\/wp-content\/uploads\/sites\/10\/2023\/09\/GettyImages-1413633547-768x512.jpg 768w, https:\/\/www.sage.com\/en-gb\/blog\/wp-content\/uploads\/sites\/10\/2023\/09\/GettyImages-1413633547-1215x810.jpg 1215w\" sizes=\"auto, (min-width: 48em) 250px, (min-width: 30em) 100vw, 100vw\" \/>\t\t\t\n\t\t\t\n\t\t\t\t\t<\/figure>\n\n\t\t\n\t\t\t\t\t<div class=\"card-post__meta\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"card-post__meta-text\"><span class=\"posted-on \"><time class=\"entry-date published\" datetime=\"2026-07-31T10:20:19+01:00\">31 July, 2026<\/time><\/span><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"card-post__meta-text\"><span class=\"reading-time\">9 min read<\/span><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\n\t\t<p class=\"card-post__title h5\">\n\t\t\t6 things you need to know about Making Tax Digital for Income Tax\t\t<\/p>\n\n\t\t\t<\/a>\n\t\n\t\n\t\t\n\t\n\t<\/article>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n<\/section>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>An application programming interface (API) is the technical term describing how one software package connects to another to transfer data. In the context of Making Tax Digital (MTD), HMRC use the term to describe the way software packages connect to their systems for the purposes of MTD. In other words, all Making Tax Digital-compatible software [&hellip;]<\/p>\n","protected":false},"author":346,"featured_media":0,"template":"","meta":{"_sage_video":false,"footnotes":""},"tags":[30],"class_list":["post-4797","sage_glossary","type-sage_glossary","status-publish","hentry","tag-mtd-business"],"distributor_meta":false,"distributor_terms":false,"distributor_media":false,"distributor_original_site_name":"Sage Advice UK","distributor_original_site_url":"https:\/\/www.sage.com\/en-gb\/blog","push-errors":false,"_links":{"self":[{"href":"https:\/\/www.sage.com\/en-gb\/blog\/api\/wp\/v2\/sage_glossary\/4797","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sage.com\/en-gb\/blog\/api\/wp\/v2\/sage_glossary"}],"about":[{"href":"https:\/\/www.sage.com\/en-gb\/blog\/api\/wp\/v2\/types\/sage_glossary"}],"author":[{"embeddable":true,"href":"https:\/\/www.sage.com\/en-gb\/blog\/api\/wp\/v2\/users\/346"}],"version-history":[{"count":0,"href":"https:\/\/www.sage.com\/en-gb\/blog\/api\/wp\/v2\/sage_glossary\/4797\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.sage.com\/en-gb\/blog\/api\/wp\/v2\/media?parent=4797"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.sage.com\/en-gb\/blog\/api\/wp\/v2\/tags?post=4797"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}