For car rental and leasing operators in Cyprus, Greece, Portugal, and Spain, structured e-invoicing is no longer a distant IT project — it is a compliance deadline. Several European countries are rolling out mandatory B2B e-invoicing requirements in 2027, and the rules directly affect how you invoice corporate clients, fleet customers, and leasing partners. This article maps the current state country by country, explains what it means for your daily operations, and gives you a practical checklist to get ready.
Important: Tax authority deadlines shift. Always verify the exact effective date and scope with your local accountant or tax authority before making compliance decisions.
Italy has had mandatory B2B e-invoicing through its SDI system since 2019, making it the longest-running national mandate in the EU. France began a phased rollout for large companies and is extending it to SMBs. Romania introduced mandatory B2B e-invoicing for domestic transactions in 2024. Poland’s KSeF system has been in preparation for mandatory use. These are the clearest precedents — and they signal the direction the rest of the EU is heading.
The EU’s ViDA (VAT in the Digital Age) initiative is the structural reason behind the wave of national mandates. ViDA sets a framework for digital reporting and e-invoicing across member states, with key provisions expected to take effect from 2030 onward at the EU level — but individual countries are moving faster on their own timelines.
Here is a country-by-country summary of what rental operators in the main markets need to watch. Treat these as directional — confirm specifics with a local tax advisor.
| Country | Current status | Expected 2027 development | Primary format |
|---|---|---|---|
| Greece | myDATA real-time reporting mandatory | B2B e-invoicing expansion likely; myDATA integration required | Greek myDATA / PEPPOL |
| Portugal | SAF-T reporting mandatory; e-invoicing for B2G in place | B2B mandate under discussion; SAF-T compliance already required | SAFT-PT / UBL |
| Spain | B2G e-invoicing mandatory; Verifactu/SII for large taxpayers | B2B e-invoicing mandate (Crea y Crece law) expected to extend to SMBs | Facturae / PEPPOL |
| Cyprus | No mandatory B2B e-invoicing yet | Monitoring EU developments; B2G requirements may expand | PEPPOL under consideration |
For Cyprus-based rental companies specifically: there is no mandatory B2B e-invoicing requirement in force as of late 2026, but the direction is clear. Companies operating cross-border — renting to Greek or Spanish corporate clients, for example — may already be subject to the invoicing rules of the client’s country. That is a gap many SMB operators have not yet closed.
Most current and upcoming mandates target B2B transactions — invoices issued to VAT-registered businesses. If your customer is a private individual renting a car for a holiday, the mandate typically does not apply to that transaction. The mandates do apply when you invoice a corporate client for a monthly fleet rental, a leasing agreement, or a long-term contract with a business that has a VAT ID. That is the segment that needs immediate attention.
If B2B revenue is a meaningful part of your business — and for many operators it is, especially those serving corporate clients and long-term contracts — then e-invoicing compliance is directly tied to your ability to keep those clients.
This is the part most guides skip. Damage charges billed after a rental, security deposit deductions, and fuel surcharges are all taxable supplies in most EU jurisdictions. If the original rental invoice was issued in a structured e-invoice format, any subsequent credit note or supplementary invoice for damages must follow the same format. Issuing a PDF email for a damage charge when the original invoice was a PEPPOL UBL document creates a compliance gap.
The practical fix: make sure your rental software can generate structured invoices not just for the base rental, but for every chargeable event tied to a booking — damage, extras, late returns.
Archiving requirements vary by country but are generally 5–10 years for VAT purposes. Structured e-invoices must often be stored in their original machine-readable format — a PDF printout of a UBL file does not satisfy the requirement. Greece’s myDATA system keeps a copy on the tax authority’s side, but you still need your own archive. Portugal’s SAF-T requirements mean your accounting system must be able to export a structured XML file on demand. Spain’s Verifactu system logs invoices in real time with the tax authority.
For a rental company with hundreds of bookings per month, this means your invoicing system needs structured export and long-term storage built in — not bolted on later.
Greece is the most immediately relevant market for many Cyprus-based operators, given the volume of cross-border business. The myDATA platform requires that income and expense classifications be transmitted to the tax authority in near real time. If you issue invoices to Greek-registered businesses, those invoices should already be flowing through myDATA-compatible channels.
The format used in Greece is not PEPPOL by default — it uses a national XML schema — but PEPPOL is accepted as a transmission channel. If you are already connected to the PEPPOL network (see the detailed breakdown in PEPPOL for car rental business), you have a head start.
Work through this before the end of Q1 2027. Earlier is better — software changes and VAT ID verification take longer than expected.
1. Audit your corporate client data
2. Identify which invoices fall under the mandate
3. Check your invoicing software
4. Connect to PEPPOL or a national e-invoicing network
5. Update your rental agreement templates
6. Train your team
7. Verify deadlines with your accountant
The common focus is on outgoing invoices — what you send to clients. The less-discussed issue is incoming invoices from suppliers. If your fuel supplier, maintenance provider, or insurance company starts sending structured e-invoices, your accounting system needs to be able to receive and process them correctly. Incoming e-invoice handling is part of the same compliance picture, and it affects your VAT reclaim process.
For rental companies thinking about the full picture — from fleet operations to financial compliance — the software layer matters more than it used to. Platforms like RentSyst Ltd. that connect fleet management, payments, and invoicing integrations in one place reduce the number of manual handoffs where data quality breaks down.
If you operate in Cyprus, Greece, Portugal, or Spain and have corporate clients on regular invoicing cycles, start with steps 1 and 2 from the checklist above this week. The VAT ID audit alone typically surfaces data gaps that take several weeks to resolve. Do not leave that for December 2026.
For operators new to structured invoicing, the PEPPOL for car rental business post covers the technical foundations. For the integration side, Billit e-Invoicing (PEPPOL) explains how the connection works in practice.
Compliance is not a competitive advantage — it is the floor. Get the floor solid before 2027 arrives.
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