Global VAT & Tax Strategy Weekly: 7 October 2026, Europe’s E-Invoicing Map, Pre-Filled VAT Returns & UAE E-Invoicing Deadline

Deadlines and changes to track

• 7 November 2026: The next quarterly update is due for the existing UK MTD for Income Tax cohort above £50,000.
• 23 October 2026: Consultation closes on Bulgaria’s draft VAT Act amendment proposing clearance invoicing and pre-filled VAT returns.
• 30 October 2026: UAE businesses with annual revenue of at least AED 50 million must appoint an Accredited Service Provider for e-invoicing.
• 28 October 2026: UK Autumn Budget. The government has ruled out increasing the main VAT rate.
• 1 January 2027: UAE mandatory e-invoicing begins for businesses in the first implementation group.
• 1 January 2027: The EU deemed-supplier rule extends to certain B2B goods supplied through marketplaces by non-EU-established sellers.
• 6 April 2027: UK MTD for Income Tax expands to qualifying sole-trader businesses above £30,000.
• 6 October 2027: Spain’s approved B2B e-invoicing mandate begins for businesses with turnover above €8 million.
• 1 July 2030: ViDA digital reporting begins for intra-EU B2B supplies, subject to national implementation.
• April 2029: The United Kingdom is planning mandatory e-invoicing.

1. Map Europe’s e-invoicing systems before your data is tested

Europe is not adopting one single e-invoicing model. It is developing three broad families of invoice control.

Family one: true clearance

Under a clearance model, the tax authority or its authorised platform validates the invoice before it is legally issued or recognised.

Examples include:

• Italy’s SdI system.
• Poland’s KSeF.
• Greece’s myDATA MARK.
• Romania’s RO e-Factura.
• Serbia’s SEF.
• Türkiye’s e-Fatura.
• Albania’s developing system.
• Moldova, where e-invoicing went live on 1 October 2026.
• North Macedonia, which is planning a system from 1 April 2027.

This model makes invoice status, transaction timing and data accuracy operational issues. A billing error may not simply require a credit note. It could prevent the invoice from being accepted at all.

Family two: reporting alongside invoice exchange

In this model, businesses exchange structured invoices through certified providers or Peppol. Transaction information is then reported at or shortly after issuance.

Key developments include:

• France’s system went live for larger businesses on 1 September 2026. Small and medium-sized businesses are expected to join from 1 September 2027.
• Slovakia is moving to structured e-invoicing from 1 January 2027.
• Croatia’s Fiscalisation 2.0 has applied since 1 January 2026.
• Belgium has proposed dual-sided e-reporting from 1 January 2028.
• Hungary is developing its digital reporting model.
• Spain approved its B2B mandate on 5 October 2026. Businesses above €8 million turnover must comply from 6 October 2027. Other businesses are expected to follow from 6 October 2028.

Family three: structured invoice exchange only

Here, businesses must exchange structured invoices, but the invoice data is not necessarily transmitted to the authority for every transaction.

Important dates include:

• Germany: issuance for businesses above €800,000 turnover from 1 January 2027 and for all businesses from 1 January 2028.
• Slovenia and Luxembourg: expected from 2028.
• Norway: expected from 2027.
• Portugal: qualified electronic signatures on PDF invoices from 1 January 2027.
• United Kingdom: mandatory e-invoicing planned from April 2029.

Bulgaria has also published a draft VAT Act amendment. It proposes a clearance model from 1 January 2028, penalties from 1 July 2028, and the replacement of VAT ledgers with pre-filled VAT returns. The consultation remains open until 23 October 2026.

Prepare for the ViDA timetable

The European Union’s VAT in the Digital Age framework is based on:

• Council Directive (EU) 2025/516.
• Regulation (EU) 2025/517.
• Implementing Regulation (EU) 2025/518.

The legal framework has been in force since 14 April 2025.

From 1 July 2030, intra-EU B2B supplies will require an EN 16931-compliant electronic invoice issued within 10 days. The supplier and customer will also have near-real-time reporting obligations. Recapitulative statements will eventually be abolished.

National systems that were already operating before 2024 must converge with the EU model by 1 January 2035.

Action point: Build a country-by-country e-invoicing register now. Record the transaction type, invoice format, transmission channel, reporting deadline, correction process and evidence-retention period. This will reduce the risk of applying the right process in one country to the wrong process in another.

2. Treat pre-filled VAT returns as a control, not an answer

Pre-filled VAT returns are developing across Europe, but they do not all work in the same way.

Current examples include:

• Spain’s Pre303, which assists with Form 303.
• Greece’s myDATA system, which pre-fills editable amounts.
• Italy’s precompiled VAT documents for limited eligible taxpayers, with the trial extended into 2027.
• Portugal’s provisional return for a restricted resident population. It excludes areas such as imports, exports, reverse charge, cash accounting and special schemes.
• Romania’s RO e-TVA, which creates a post-deadline comparison statement rather than a tax claim title.
• Slovenia’s partially pre-filled return, operating since July 2025.
• Hungary’s eVAT/eÁFA, expected to become mandatory from 2027.
• Poland’s proposed opt-in e-VAT draft return, targeted for the fourth quarter of 2029.
• Serbia’s planned pre-filled model, targeted for 2027.

The central warning is simple: reported does not mean legally correct.

Authority data may not determine:

• Partial exemption.
• Business or private use.
• Fixed-establishment outcomes.
• Capital-goods adjustments.
• Bad-debt relief.
• Chain transactions.
• Import VAT recovery.
• Reverse-charge treatment.
• Marketplace and fulfilment movements.

Use the authority’s draft as a control input. Do not accept it without review.

Run a three-way reconciliation:

1. Compare your ERP or accounting result with your digital-reporting submissions.
2. Compare both against the authority-prepared view.
3. Investigate every material difference and retain evidence of the conclusion.

Protect the purchase side. An input invoice missing from a pre-filled draft does not automatically mean that the VAT is non-deductible. Check the original invoice, the tax point, the supplier data and the relevant local