E-invoicing mandates 2027: Germany, Norway, Slovakia, UAE

E-invoicing mandates 2027 begin on 1 January in four countries at once: Germany, Norway, Slovakia and the UAE. An e-invoice is structured data that software can process automatically, not a PDF that someone has to read. The four mandates share a date, but they do not share a design. For an AP team with entities in these markets, the differences matter more than the date.

This post sets out what each mandate requires and the AP work they share. It covers the four markets where e-invoicing mandates 2027 reach a milestone on 1 January. Others come later. The UK, for instance, requires VAT e-invoicing from 1 April 2029. Our UK e-invoicing mandate 2029 readiness guide covers it.

E-invoicing mandates 2027 at a glance

All four of the e-invoicing mandates 2027 start on 1 January, but each defines “live” differently.

Germany. Issuing e-invoices becomes the general rule for domestic B2B invoices. Businesses with 2026 turnover of €800,000 or less (about $894,000), and those using EDI, have until 31 December 2027.

Norway. Businesses with bookkeeping obligations must issue e-invoices to other such businesses, where the buyer can receive them. Receiving becomes mandatory for everyone from 1 January 2030.

Slovakia. VAT payers apply e-invoicing to domestic B2B transactions. On the Peppol route, invoice data also reaches the tax authority in near real time.

UAE. Phase 1 goes live for businesses with revenue of AED 50 million or more (about $13.6 million). The deadline to appoint an accredited service provider fell on 30 October 2026.

Germany, Norway and Slovakia are domestic mandates. The first question for a multinational is which local entities buy from and sell to local businesses. The UAE’s Phase 1 applies by revenue, so there the question is whether an entity reaches AED 50 million.

Germany: issuing becomes the general rule

From 1 January 2027, issuing e-invoices becomes the general rule for domestic B2B transactions in Germany, according to Baker Tilly’s guide to the deadline. Receiving has been mandatory since 1 January 2025. AP teams have therefore lived with the receiving side for two years. 2027 adds the issuing side, which lands on billing and the finance team that owns it.

Scope and formats

The obligation applies where the supplier and the recipient both have their establishment in Germany. It excludes VAT-exempt transactions under section 4 of the VAT Act, invoices up to €250 (about $279) and transport tickets. A compliant e-invoice follows the European standard EN 16931, such as XRechnung or ZUGFeRD. Parties can also agree another format that meets the legal requirements.

Transition and timing

Two transitional rules run to 31 December 2027. Suppliers with total turnover of €800,000 or less in 2026 (about $894,000) can keep using alternative formats, and invoices can continue to travel by EDI where the recipient agrees.

One caution on timing. The German skilled crafts body ZDH has asked for the issuing date to move to 1 January 2028 for businesses above the turnover threshold, citing software errors and a European standard that is not yet final. Press reports say the Finance Ministry’s letter of 15 October 2026 leaves the dates unchanged. Plan for 1 January 2027, and check the ministry’s position before you act on any delay.

Channels and validation

Germany has no central portal and no mandatory routing system, so each business chooses its channel. Baker Tilly notes that many companies intend to use email, with Peppol, EDI and download portals as alternatives. The warning that matters is on validation. A technically valid e-invoice can still carry a VAT error. That error can put input VAT deduction at risk, for you or for your customer.

A technically valid e-invoice can still carry a VAT error.

Norway: issuing from 2027, receiving from 2030

Norway’s mandate starts on 1 January 2027. It applies to entities with bookkeeping obligations that sell goods and services to other such entities, under final regulations that the tax authority published on 29 September 2026. It covers domestic B2B sales and does not apply to cash sales.

Two details change the picture. First, the obligation reaches foreign businesses that have Norwegian bookkeeping obligations, including those registered for VAT in Norway without a permanent establishment. A non-Norwegian group should check whether it is one. Second, the duty to issue applies only where the buyer can receive e-invoices, meaning the buyer has registered in ELMA, the Peppol directory. Receiving becomes mandatory for all from 1 January 2030.

Approved standards are EHF Invoicing and Peppol BIS Billing, version 3.0 or newer. Until 1 January 2030, other structured formats such as EDIFACT stay permitted if they meet the Bookkeeping Act. Norway does not accept a PDF where the buyer can receive e-invoices.

More follows in 2028. From 1 January 2028, businesses must put the buyer’s organisation number on sales documents. They must also always send sales documents to buyers with bookkeeping obligations. Exemptions apply, including for very low-turnover businesses.

Slovakia: e-invoicing with near real-time reporting

From 1 January 2027, Slovak VAT payers must apply e-invoicing to domestic transactions between taxable persons, according to the European Commission’s country factsheet. The customer must be able to receive the e-invoice. An e-invoice means structured data in a format that meets EN 16931, and Peppol BIS 3.0 is the preferred format.

What sets Slovakia apart is reporting. The country uses a two-track model. On the Peppol track, the access point extracts data from each e-invoice and sends it to the Financial Directorate. The tax authority therefore sees domestic invoices in near real time. On the second track, other formats that comply with EN 16931 carry no reporting duty for now. The factsheet says the authority intends to make e-reporting mandatory for them from 1 July 2030.

During the transition, to 30 June 2030, businesses still file their control statements as well as reporting e-invoice data. The choice of channel in Slovakia is therefore a tax-reporting decision, not only an IT one.

UAE: Phase 1 goes live after the deadline

The UAE Ministry of Finance moved the deadline for large businesses to appoint an accredited service provider from 31 July 2026 to 30 October 2026. Deloitte confirms the Phase 1 go-live date stays 1 January 2027. The extension applies to businesses with revenue of AED 50 million or more (about $13.6 million). That deadline has now passed.

Accredited service providers, approved by the Ministry of Finance, support e-invoice transmission, validation and reporting to the Federal Tax Authority. Deloitte lists the risks of falling behind. Non-compliant invoices can be rejected or delayed in payment. The Federal Tax Authority may look more closely. VAT recovery can become harder, and penalties may follow.

Its recommended steps are practical ones. Confirm which entities and invoice flows are in scope, run a data gap assessment and appoint a provider. Then make the system and process changes, and test end to end well before go-live. If your entity missed 30 October, check the Ministry of Finance’s latest guidance before assuming anything.

What AP teams should do now

The four e-invoicing mandates 2027 differ, but they share the AP work underneath them. Five steps apply in every market.

1. Map the entities in scope. For Germany, Norway and Slovakia, list the local entities that buy from and sell to local businesses. For the UAE, check revenue against the AED 50 million (about $13.6 million) Phase 1 line.
2. Capture e-invoices as data. An e-invoice that arrives as structured data should reach the ledger as data. If it is turned into a PDF and keyed in again, the mandate adds cost without removing any.
3. Ask your provider which channel it supports. Peppol is the route in Norway and the Slovak reporting track, Germany leaves the channel open, and the UAE runs through an accredited service provider.
4. Clean the supplier master. Tax numbers, organisation numbers and bank details travel with every structured invoice, and Norway adds the buyer’s organisation number to sales documents from 2028. If you want a structure for the work, the Supplier Control Framework sets out the control questions by stage.
5. Keep the VAT check after validation. Format validation does not test VAT treatment. Decide who checks tax codes and input VAT on the e-invoices you receive and issue.

None of the e-invoicing mandates 2027 needs a go-live date to start this work. Doing it before an invoice is rejected costs less than doing it after.

Where SoftCo fits

SoftCo’s e-invoicing software supports organisations operating under e-invoicing mandates in Europe, and Norway and Slovakia both build on the Peppol model. If you want the background on how structured invoicing works, our guide to e-invoicing covers the models, the formats and the implementation questions.