ediverse

Type to search across standards, messages, tools and glossary.

ediverse Explore the platform

Spotlight PEPPOL BIS Billing 3.0 The EU e-invoicing mandate is here — France Sept 2026, Belgium Jan 2026, Germany 2025.

— 01

Foundations

— 02

Standards

— 03

Flagship messages

— 04

Tools

Estonia — EMTA, X-Road and mandatory e-invoice

Estonia is one of the most advanced countries worldwide in digital governance thanks to e-Estonia, X-Road, e-Residency and 99% of public services dematerialised. B2G e-invoicing is mandatory since 1 July 2019 and the B2B mandate (on demand) came into force on 1 July 2025.

Regulatory timeline

  • 1 January 2002 — Accounting Act. Estonian Accounting Act (RT 2002), lays the foundations of invoicing and accounting retention.
  • 1 January 2014 — e-Residency launched. World's first cross-border digital residency programme; allows non-residents to create an Estonian company and issue e-invoices via X-Road APIs.
  • 1 July 2019 — B2G EN 16931 mandate. All Estonian public sector suppliers required to issue EN 16931 compliant e-invoices, transposition of Directive 2014/55/EU.
  • 1 May 2020 — PEPPOL BIS Billing 3.0. RIA becomes EE PEPPOL Authority and mandates PEPPOL BIS Billing 3.0 as pivot format, the Estonian e-arve XML is deprecated.
  • 1 January 2024 — Accounting Act amendment. Parliament (Riigikogu) adopts the amendment establishing the B2B right for buyer to demand an EN 16931 e-invoice from 1 July 2025.
  • 1 July 2025 — B2B right entry into force. The B2B buyer can demand a compliant EN 16931 e-invoice; the supplier cannot refuse. On-demand mandate effective.
  • 11 March 2025 — EU ViDA adoption. Estonia supports strict ViDA alignment and anticipator via the on-demand B2B mandate.
  • 2026-2027 — Phase 2 (announced). The Ministry of Finance studies extension to a universal B2B obligation aligned with ViDA 2030, no official schedule to date.

Deep dives — 10 dedicated pages

Ten dedicated pages drill into every dimension of the Estonian e-invoicing ecosystem — pioneering reforms (e-arve B2G 2017, KMD INF SAF-T 2014, Käibemaks regimes, e-Residency 2014), the technical specs (X-Road / X-tee, Ariregister registrikood, eMTA portal), and the real-world B2B usage that meets EU regulation halfway (Selver/Maxima/Rimi/Coop/Prisma retail EDIFACT, tech unicorns EDI, and the e-Residency OU stress test).

Pioneering reforms

  • e-arve — universal B2G mandate from 1 July 2017 · Universal B2G mandate from 1 July 2017 (Riigikantselei since 1 Jan 2017) — seven years ahead of most EU transpositions. Legal basis Raamatupidamise seadus § 7-1, e-arve XML + EN 16931 + PEPPOL BIS 3.0.
  • KMD INF SAF-T — universal reporting since 2014 · OECD-inspired SAF-T reporting mandatory since 1 November 2014, second country worldwide after Portugal. Monthly invoice-by-invoice annex above EUR 1,000 net, automatic seller/buyer cross-check.
  • Käibemaks — 24% / 9% / 5% / 0% · Standard rate 24% since 1 July 2025 (22% between 2024-01-01 and 2025-06-30, 20% before 2024) — anti-defence hikes after the Ukraine invasion. Reduced 9% medicines/books/accommodation, super-reduced 5% press since 2025.
  • e-Residency — programme since 2014 · World-unique programme launched 1 December 2014. ~100,000 cumulative e-residents, ~28,000 OU companies formed. eIDAS-compliant digi-ID, full access to Estonian e-government services without residence.

Technical specs

  • X-Road / X-tee — cross-agency data bus · Cross-agency data bus launched in 2001 by RIA. Open-source MIT via NIIS since 2017. Deployed in Finland, Iceland, Faroe Islands, Ukraine, Mexico City, Argentina, Madagascar.
  • Ariregister — registrikood + isikukood · Estonian register operated by RIK. registrikood (8 digits) for companies, isikukood (11) for natural persons, KMKR (EE + 9) for VAT. PEPPOL ICD 0191.
  • eMTA — Maksu- ja Tolliamet tax portal · EMTA tax portal. SSO via ID-kaart, Smart-ID, Mobiil-ID, e-Resident digi-ID. KMD + KMD INF + TSD + Tulumaks. Public REST API apitietopalvelu.emta.ee OAuth2, ~95% pre-filling, ~99% electronic filings.

Real-world B2B usage

Technical schema

Estonia uses PEPPOL BIS Billing 3.0 without national CIUS: EMTA rules are applied on top. The X-Road network also serves as an alternative channel for inter-agency exchanges.

  • Customization ID: urn:cen.eu:en16931:2017#compliant#urn:fdc:peppol.eu:2017:poacc:billing:3.0 — unmodified standard PEPPOL profile.
  • Registrikood: 8 digits, assigned by RIK (Estonian Central Register), PEPPOL schemeID 0191.
  • Estonian VAT ID: EE + 9 digits, VIES validation for intra-EU.
  • VAT rates: 22 % standard since 1 January 2024 (previously 20 %), 9 % reduced (books, hospitality, medicines), 5 % super-reduced (press since August 2022), 0 % (exports, intra-EU B2B).
  • X-Road: interoperable data bus used by Estonian ministries (e-MTA, e-Business Registry, e-Notary). Possibility to submit B2G e-invoices via X-Road API rather than PEPPOL for ERPs integrated with the Estonian data bus.

Structure of a PEPPOL BIS Billing 3.0 invoice to EMTA:

xmlee-peppol-bis.xml
<?xml version="1.0" encoding="UTF-8"?>
<Invoice xmlns="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2"
         xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2"
         xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2">
  <cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:fdc:peppol.eu:2017:poacc:billing:3.0</cbc:CustomizationID>
  <cbc:ProfileID>urn:fdc:peppol.eu:2017:poacc:billing:01:1.0</cbc:ProfileID>
  <cbc:ID>EE-2026-00000142</cbc:ID>
  <cbc:IssueDate>2026-04-15</cbc:IssueDate>
  <cbc:DueDate>2026-05-15</cbc:DueDate>
  <cbc:InvoiceTypeCode>380</cbc:InvoiceTypeCode>
  <cbc:DocumentCurrencyCode>EUR</cbc:DocumentCurrencyCode>
  <cbc:BuyerReference>EMTA-2026-TELLI-00789</cbc:BuyerReference>
  <cac:AccountingSupplierParty>
    <cac:Party>
      <cbc:EndpointID schemeID="0191">10000000</cbc:EndpointID>
      <cac:PartyLegalEntity>
        <cbc:RegistrationName>Ediverse Demo Eesti OÜ</cbc:RegistrationName>
        <cbc:CompanyID schemeID="0191">10000000</cbc:CompanyID>
      </cac:PartyLegalEntity>
      <cac:PartyTaxScheme>
        <cbc:CompanyID>EE100000001</cbc:CompanyID>
        <cac:TaxScheme><cbc:ID>VAT</cbc:ID></cac:TaxScheme>
      </cac:PartyTaxScheme>
    </cac:Party>
  </cac:AccountingSupplierParty>
  <cac:AccountingCustomerParty>
    <cac:Party>
      <cbc:EndpointID schemeID="0191">70000115</cbc:EndpointID>
      <cac:PartyLegalEntity>
        <cbc:RegistrationName>Maksu- ja Tolliamet (EMTA)</cbc:RegistrationName>
      </cac:PartyLegalEntity>
    </cac:Party>
  </cac:AccountingCustomerParty>
  <cac:TaxTotal>
    <cbc:TaxAmount currencyID="EUR">220.00</cbc:TaxAmount>
  </cac:TaxTotal>
  <cac:LegalMonetaryTotal>
    <cbc:LineExtensionAmount currencyID="EUR">1000.00</cbc:LineExtensionAmount>
    <cbc:TaxExclusiveAmount currencyID="EUR">1000.00</cbc:TaxExclusiveAmount>
    <cbc:TaxInclusiveAmount currencyID="EUR">1220.00</cbc:TaxInclusiveAmount>
    <cbc:PayableAmount currencyID="EUR">1220.00</cbc:PayableAmount>
  </cac:LegalMonetaryTotal>
</Invoice>

Submission flow

Estonia supports two main channels: 4-corner PEPPOL (EU standard) and X-Road API (for ERPs integrated with the Estonian data bus). Most suppliers use PEPPOL via their Access Points (Telema, Omniva, Fitek, Pagero) which resolve Registrikood via SMP.

textee-peppol-flow.txt
┌──────────────┐    ┌────────────────────┐    ┌──────────────┐
│ Supplier     │───>│ PEPPOL Access      │───>│ Recipient    │
│ (ERP, UBL    │    │ Point (sender)     │    │ Access Point │
│  BIS 3.0)    │    │ or X-Road API      │    │ (EMTA/SAP)   │
└──────────────┘    └─────────┬──────────┘    └──────┬───────┘
                              │ AS4 / X-Road          │
                              ▼                       ▼
                  ┌────────────────────┐    ┌──────────────┐
                  │ SML/SMP            │    │ X-Road       │
                  │ + RIA peppol-      │    │ (data        │
                  │ authority          │    │  exchange)   │
                  └────────────────────┘    └──────────────┘

For advanced uses, ID-card / Mobile-ID / Smart-ID authentication enables an eIDAS qualified signature compliant with BDoc/ASiC-E covering the invoice, natively integrated to the ERP via a SignDOK API or Open Source libraries like DigiDoc4j.

Validation

  • EMTA — Maksu- ja Tolliamet: emta.ee — Tax and Customs Board, e-MTA portal, VAT rules.
  • RIA — Riigi Infosüsteemi Amet: ria.ee — State Information System Authority, X-Road operator, EE PEPPOL Authority.
  • RIK — Centre of Registers: rik.ee — Central Business Register, Registrikood assignment, ariregister API.
  • e-Residency Estonia: e-resident.gov.ee — digital residency programme for non-resident founders.
  • Estonian Standards Body: evs.ee — Estonian standardisation body, publication of EVS-EN 16931:2017.

Common pitfalls

  1. VAT 22% since January 2024. The Estonian standard rate moved from 20% to 22% on 1 January 2024 (Act 144 SE) and will stay at 22% until 2026 (then 24% planned mid-2025). Verify the precise effective date to avoid PEPPOL BR-S-08 rejections.
  2. Registrikood vs VAT ID. The Registrikood (8 digits, register) is not the VAT ID (EE + 9 digits). For the PEPPOL EndpointID, use Registrikood with schemeID 0191. For the TaxScheme, use VAT ID. Frequent inversion error which makes the invoice rejected by the SMP.
  3. X-Road for B2G: mandatory alternative. Some government agencies prefer to receive e-invoices via their dedicated X-Road service rather than PEPPOL. Verify the target agency via RIA to avoid duplicating or being rejected. Most accept both, but a few niche services impose X-Road (e.g. eFinantsamet).
  4. e-Residency company: virtual address ≠ fiscal address. e-Residents who create an Estonian OÜ have a virtual Estonian address (X-Road partner service), but their personal fiscal residence remains in their country of domicile. Carefully distinguish in the invoice the registered office (Estonia) from the beneficiary's fiscal domicile to avoid EMTA control.
  5. 7-year archiving Accounting Act. Retention is 7 years after the end of the fiscal year for accounting documents (§ 12). The structured PEPPOL UBL format is mandatory since 2025; a PDF alone is no longer enough. Favour archiving with ID-card signature to guarantee integrity.