{"id":29551,"date":"2026-09-23T11:00:01","date_gmt":"2026-09-23T11:00:01","guid":{"rendered":"https:\/\/bilnex.io\/en\/peppol-four-corner-model\/"},"modified":"2026-09-23T11:00:03","modified_gmt":"2026-09-23T11:00:03","slug":"peppol-cetru-sturu-modelis","status":"publish","type":"page","link":"https:\/\/bilnex.io\/lv\/peppol-cetru-sturu-modelis\/","title":{"rendered":"Peppol \u010detru st\u016bru modelis: k\u0101 pien\u0101k e-r\u0113\u0137ins"},"content":{"rendered":"<article class=\"article-content-section article-content article-single\">\n<div class=\"container content-area\">\n<div class=\"text-content ce-answer\">\n<p>Peppol&#8217;s four-corner model (4-corner model) means an e-invoice travels between seller and buyer through four parties: C1 is the seller, C2 is the sending service provider the seller has chosen, C3 is the receiving service provider the buyer has chosen, and C4 is the buyer. The standard route is <a href=\"https:\/\/peppol.org\/wp-content\/uploads\/2024\/06\/eInvoicing-Discovering-Peppol-May-2024.pdf\">C1 \u2192 C2 \u2192 C3 \u2192 C4<\/a>, with C2 converting the seller&#8217;s invoice into a standard Peppol e-invoice and C3 converting it again into a form the buyer&#8217;s system can read. You don&#8217;t need the same operator or the same software as your customer, because <a href=\"https:\/\/peppol.org\/learn-more\/peppol-interoperability-framework\/\">one connection to one service provider is enough for any sender and any receiver<\/a> to reach the whole network. And in Estonia, an e-invoice requirement doesn&#8217;t automatically mean Peppol. The Ministry of Finance works from a <a href=\"https:\/\/www.fin.ee\/finantspoliitika-valissuhted\/arvestusvaldkond\/raamatupidamise-algdokumendid-arved-e-arved\">principle of format freedom<\/a>, and both the Estonian and the European e-invoice standard are in use.<\/p>\n<div class=\"ce-key-facts\">\n<p class=\"ce-key-facts-title\"><strong>Key facts<\/strong><\/p>\n<table class=\"ce-key-facts-table\">\n<thead>\n<tr>\n<th>Fact<\/th>\n<th>Value<\/th>\n<th>Valid from<\/th>\n<th>Source<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>The parties in the four-corner model<\/td>\n<td>C1 the seller, C2 the seller&#8217;s service provider, C3 the buyer&#8217;s service provider, C4 the buyer<\/td>\n<td>as of 2026-09<\/td>\n<td><a href=\"https:\/\/peppol.org\/wp-content\/uploads\/2024\/06\/eInvoicing-Discovering-Peppol-May-2024.pdf\" rel=\"nofollow noopener\">peppol.org<\/a><\/td>\n<\/tr>\n<tr>\n<td>One connection, the whole network<\/td>\n<td>Every sender and every receiver needs a connection to just one Peppol service provider (&#8220;connect ONCE, reach ALL&#8221;)<\/td>\n<td>as of 2026-09<\/td>\n<td><a href=\"https:\/\/peppol.org\/learn-more\/peppol-interoperability-framework\/\" rel=\"nofollow noopener\">peppol.org<\/a><\/td>\n<\/tr>\n<tr>\n<td>Amendment to \u00a7 7\u00b9 of the Estonian Accounting Act<\/td>\n<td>Entered into force on 1 July 2025; the business register records the e-invoice recipient&#8217;s e-invoice operator identifier or other receiving channel<\/td>\n<td>01.07.2025<\/td>\n<td><a href=\"https:\/\/www.riigiteataja.ee\/akt\/110102024003?tegevus=salvesta-link\" rel=\"nofollow noopener\">riigiteataja.ee<\/a><\/td>\n<\/tr>\n<tr>\n<td>A buyer&#8217;s right to demand an e-invoice in Estonia<\/td>\n<td>The right belongs to every accounting entity that has registered itself as an e-invoice recipient in the e-Business Register (Accounting Act \u00a7 7\u00b9 (7)); around 18,000 have registered<\/td>\n<td>since 2025<\/td>\n<td><a href=\"https:\/\/www.fin.ee\/finantspoliitika-valissuhted\/arvestusvaldkond\/raamatupidamise-algdokumendid-arved-e-arved\" rel=\"nofollow noopener\">fin.ee<\/a><\/td>\n<\/tr>\n<tr>\n<td>Public-sector obligation to receive e-invoices in the EU<\/td>\n<td>Article 7 of Directive 2014\/55\/EU obliges contracting authorities to receive and process e-invoices compliant with the European standard; Peppol is not named as the only channel<\/td>\n<td>in force, as of 2026-09<\/td>\n<td><a href=\"https:\/\/eur-lex.europa.eu\/legal-content\/EN\/TXT\/?uri=CELEX%3A32014L0055\" rel=\"nofollow noopener\">eur-lex.europa.eu<\/a><\/td>\n<\/tr>\n<tr>\n<td>ViDA cross-border digital reporting<\/td>\n<td>Member States must adopt the measures by 30 June 2030 and apply them from 1 July 2030; the package was adopted on 11 March 2025<\/td>\n<td>01.07.2030<\/td>\n<td><a href=\"https:\/\/eur-lex.europa.eu\/legal-content\/EN\/TXT\/?uri=CELEX%3A32025L0516\" rel=\"nofollow noopener\">eur-lex.europa.eu<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2 id=\"how-a-1-200-invoice-gets-from-your-software-into-your-custom\">How a \u20ac1,200 invoice gets from your software into your customer&#8217;s books<\/h2>\n<p>Take a concrete case. You invoice an Estonian client for \u20ac1,200, and that client is registered in the business register as an e-invoice recipient.<\/p>\n<ul>\n<li><strong>C1 (you):<\/strong> you create the invoice in your sales software and hit &#8220;Send&#8221;. As far as your work goes, it ends there.<\/li>\n<li><strong>C2 (your operator):<\/strong> the sending Access Point, your operator&#8217;s technical gateway into the network, turns your invoice into a compliant Peppol message and must <a href=\"https:\/\/peppol.org\/learn-more\/peppol-interoperability-framework\/\">validate it against the Peppol BIS rules before sending<\/a>, meaning it checks that the required fields and the structure match the standard.<\/li>\n<li><strong>Finding the address:<\/strong> C2 asks a central lookup service (Service Metadata Locator, SML) which capability register (Service Metadata Publisher, SMP) holds your client&#8217;s details, then reads from there which documents that client is actually able to receive.<\/li>\n<li><strong>C3 (your client&#8217;s operator):<\/strong> receives the invoice and reshapes it for your client&#8217;s accounting software.<\/li>\n<li><strong>C4 (your client):<\/strong> the \u20ac1,200 purchase invoice appears in their accounting in machine-readable form, with nobody retyping a single number.<\/li>\n<\/ul>\n<p>One boundary matters here. Validation is technical. The sending Access Point does not confirm that the invoice is commercially correct or that your client agrees to pay it. A dispute over price or quantity is still settled between you and your customer.<\/p>\n<h2 id=\"why-peppol-isn-t-an-invoice-portal\">Why Peppol isn&#8217;t an invoice portal<\/h2>\n<p>This is the most common mix-up. SML and SMP exist for finding addresses and receiving capabilities; think of them as an electronic address book. There is no shared environment where a seller &#8220;uploads&#8221; an invoice and a buyer &#8220;downloads&#8221; it: the invoice moves directly between service providers. The end user doesn&#8217;t need to be an OpenPeppol member either, but their receiving capability has to be published in the network \u2014 otherwise nobody on the sending side can find them at all.<\/p>\n<h2 id=\"does-estonia-s-e-invoice-requirement-mean-peppol\">Does Estonia&#8217;s e-invoice requirement mean Peppol?<\/h2>\n<p>No. Estonia introduced a general obligation in 2019 to issue an e-invoice when the buyer is a public-sector body. In 2025 that was replaced by <a href=\"https:\/\/www.fin.ee\/finantspoliitika-valissuhted\/arvestusvaldkond\/raamatupidamise-algdokumendid-arved-e-arved\">a buyer&#8217;s-choice model that extended to the private sector<\/a>: an e-invoice may be demanded by any accounting entity that has registered itself as an e-invoice recipient in the e-Business Register (Accounting Act \u00a7 7\u00b9 (7)). Unless you agree otherwise, the seller then has to issue an e-invoice. The amendment to the Accounting Act <a href=\"https:\/\/www.riigiteataja.ee\/akt\/110102024003?tegevus=salvesta-link\">entered into force on 1 July 2025<\/a>, and the register also records the recipient&#8217;s e-invoice operator identifier or other receiving channel. So the requirement is about the format and the channel the buyer has published. Peppol is one widespread way to deliver it, not the only one the law recognises.<\/p>\n<h2 id=\"the-peppol-network-en-16931-and-vida-are-three-different-thi\">The Peppol network, EN 16931 and ViDA are three different things<\/h2>\n<p>Most of the confusion comes from treating these three as one thing.<\/p>\n<p>Peppol&#8217;s four-corner model is a delivery network and a set of agreements: who connects to whom, how an address is found, how a message arrives securely.<\/p>\n<p>The European e-invoice standard (EN 16931) is an agreement on the content and structure of the invoice itself. Article 7 of Directive 2014\/55\/EU requires contracting authorities to <a href=\"https:\/\/eur-lex.europa.eu\/legal-content\/EN\/TXT\/?uri=CELEX%3A32014L0055\">receive and process e-invoices that comply with the European standard<\/a> in public procurement, but it does not name Peppol as the one mandatory delivery channel.<\/p>\n<p>ViDA is a VAT reporting reform. The package was adopted on 11 March 2025 and published in the Official Journal of the European Union on 25 March 2025; <a href=\"https:\/\/eur-lex.europa.eu\/legal-content\/EN\/TXT\/?uri=CELEX%3A32025L0516\">Member States must adopt the measures by 30 June 2030 and apply them from 1 July 2030<\/a> for digital reporting of cross-border transactions. That concerns reporting, not whether Peppol is compulsory. None of these dates makes the four-corner model legally mandatory in itself, and none of them forces every domestic B2B invoice through Peppol.<\/p>\n<p>In practice this comes down to two things. Today, what counts is the receiving channel your customer has entered in the business register. By 2030, what counts in addition is whether the data behind your cross-border sales exists in structured form. A machine-readable invoice already does that part of the work for you.<\/p>\n<p class=\"ce-lang-links\"><span class=\"ce-label\">Also available in:<\/span> <a href=\"https:\/\/bilnex.io\/peppol-nelja-nurga-mudel\/\" hreflang=\"et\" lang=\"et\">eesti keeles<\/a><\/p>\n<p class=\"ce-reviewed\"><em>Last reviewed: <time datetime=\"Mon Sep 21\">21 September 2026<\/time><\/em><\/p>\n<h2>FAQ<\/h2>\n<h3>Mis on Peppoli nelja nurga mudel ja kes on selle osalised?<\/h3>\n<p>Peppoli nelja nurga mudel kirjeldab e-arve liikumist m\u00fc\u00fcjalt ostjani nelja osalise kaudu: C1 on m\u00fc\u00fcja, C2 m\u00fc\u00fcja Access Point, C3 ostja Access Point ja C4 ostja ise. Mudel tagab koostalitusv\u00f5ime, v\u00f5imaldades osapooltel arveid vahetada ilma sama operaatorit v\u00f5i raamatupidamistarkvara kasutamata.<\/p>\n<h3>Kas Eesti e-arve kohustus n\u00f5uab Peppoli v\u00f5rgu kasutamist?<\/h3>\n<p>Ei, Eestis kehtib formaadivabaduse p\u00f5him\u00f5te ning Peppol on vaid \u00fcks paljudest edastuskanalitest. Alates 1. juulist 2025 v\u00f5ib ostja n\u00f5uda masinloetavat e-arvet, kuid m\u00fc\u00fcja edastab selle kanali ja k\u00e4itleja kaudu, mille ostja on \u00e4riregistrisse m\u00e4rkinud.<\/p>\n<h3>Mis vahe on Peppoli v\u00f5rgul, EN 16931 standardil ja ViDA direktiivil?<\/h3>\n<p>Peppol on tehniline edastusv\u00f5rk ja reeglistik dokumentide turvaliseks kohaletoimetamiseks, samal ajal kui EN 16931 m\u00e4\u00e4ratleb e-arve semantilise andmesisu ja struktuuri. ViDA on Euroopa Liidu k\u00e4ibemaksureform, mis kehtestab alates 1. juulist 2030 piiri\u00fclestele tehingutele kohustusliku standardiseeritud digiaruandluse.<\/p>\n<p><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Mis on Peppoli nelja nurga mudel ja kes on selle osalised?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Peppoli nelja nurga mudel kirjeldab e-arve liikumist m\u00fc\u00fcjalt ostjani nelja osalise kaudu: C1 on m\u00fc\u00fcja, C2 m\u00fc\u00fcja Access Point, C3 ostja Access Point ja C4 ostja ise. 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