E-Invoicing Requirements in 2026 for SMEs
Who must receive and issue e-invoices in Germany? A practical guide to ZUGFeRD, XRechnung, transition periods and next steps for SMEs.
From 2025 and 2026, the e-invoicing requirement in B2B business will become the focus for many companies in Germany. What previously primarily affected the public sector and large corporations is increasingly also affecting small and medium-sized companies: invoices must be issued and received in a structured, machine-readable form - no longer just as PDF or paper.
This article provides a practical overview: Who is affected, which formats are eligible, which steps should you plan now? Important: The specific obligations depend on your company - have deadlines, exceptions and special cases legally checked. We do not replace legal advice, but rather help with orientation. More detailed information on E-Invoicing, ZUGFeRD and XRechnung.
What does “e-invoicing obligation” mean?
An e-invoice within the meaning of the legal regulations is an invoice in a structured electronic format that enables automatic processing - typically according to EN 16931. This is more than just “invoice by email as PDF”.
What does not usually count as an e-invoice?
- Paper invoice by post
- PDF without embedded, standard-compliant structural data
- Image files (scan, photo)
- Invoices only as Excel or Word attachments without a standard format
What counts as an e-invoice (examples)
| Format | Short description |
|---|
| ZUGFeRD | PDF with embedded XML (EN-16931 profile) |
| XRechnung | pure CII-XML (often authorities) |
| UBL | XML standard (partly international) |
Format details: ZUGFeRD vs XRechnung.
Legal background – without claim to completeness
The introduction of the B2B e-invoicing requirement is based on changes in the German VAT Act and the Growth Opportunities Act discussion (including the Growth Opportunities Act context). Core idea: Invoice data should be exchanged digitally and structured in order to reduce bureaucracy and automate processes.
Legal texts and regulations can change; Transition periods and exceptions are regulated in detail. Check legally with tax advice or a specialist lawyer to find out which standard applies to your business and from which date.
Timetable: Who is affected and when?
The following overview is a simplified representation for orientation - not binding legal advice:
| Phase (orientation) | Rough classification |
|---|
| From January 1st, 2025 | Companies must be able to receive e-invoices (principle) |
| From January 1st, 2027 | Obligation to issue e-invoices in B2B (for many companies) |
| Transition | Small businesses and certain groups may have longer deadlines |
Receiving vs. issuing
- Obligation to receive occurs earlier: Systems and processes must be able to process structured invoices.
- Duty to issue follows with a delay for some company sizes - details in the legal situation and BMF letter.
Legally check whether your company is classified as a small business, annual turnover below thresholds or special case.
Which companies are meant?
Basically: Entrepreneurial B2B invoices between companies based in Germany. Typically affected:
- Skilled trades and construction
- Agencies and advice
- Trade and e-commerce (B2B)
- Service providers in all industries
Often not affected in the same way
- Invoices to private individuals (B2C) – different rules
- Invoices to public clients – XRechnung logic has already applied here for a long time (see XRechnung)
- Certain exceptions – e.g. B. Small-value invoices, tickets (regulated separately, seek legal advice)
What exactly do you have to do?
1. Current analysis
- How do you issue invoices today? (Word, PDF, software)
- How do you receive incoming invoices?
- Which customers/suppliers are already on e-invoicing?
2. Set format
For B2B often ZUGFeRD in the EN-16931 profile. For authorities XRechnung. Overview: ZUGFeRD, XRechnung.
3. Select or customize software
Invoice software with e-invoice export, validation and archiving. Advice: Write an invoice.
4. Processes and training
Let employees know: no more manual “PDF-only” for B2B when mandatory. Involve accounting and tax advisors.
5. Test and rollout
Test calculations with partners, use validator, feedback loop.
Formats at a glance for 2026
| Requirement | Recommended format (orientation) |
|---|
| B2B Germany | ZUGFeRD (EN 16931) |
| Public sector | XRechnung + Leitweg-ID |
| International | Factur-X, UBL – depending on partner |
A simple PDF generally does not meet the B2B e-invoice requirement as soon as the issue requirement applies to you. Legally check borderline cases (e.g. existing agreements with customers).
Receiving e-invoices: often the first step
Many companies underestimate the obligation to receive. As early as 2025 (orientation) you should be able to receive and process structured invoices:
Technical options
- ERP/Accounting with ZUGFeRD import
- E-invoice mailbox with forwarding to accounting
- Tax advisor software with client portal
- Peppol connection (if partners use Peppol)
Without a reception solution, manual workarounds pile up - error-prone and time-consuming.
Issuing e-invoices: Planning for 2027 and earlier
Anyone who has to exhibit from 2027 (or earlier, depending on size) should prepare the change in 2025/2026:
Preparation checklist
Communication with customers
Actively ask:
- What format do you expect (ZUGFeRD, XRechnung, Peppol)?
- Through which channel (email, portal, Peppol)?
- Are there validation requirements?
Proactive communication prevents rejections.
Small businesses and transition periods
Small businesses in the sense of VAT can have longer transition periods for the issuance (orientation: partly until 2028). This doesn't mean you don't have to do anything:
- You usually have to receive earlier
- Large customers are already requesting e-invoices voluntarily
- Competitive advantage through faster, automated processes
Check legally whether small business regulations and e-invoicing deadlines apply to you.
XRechnung and B2B obligation: do not confuse them
Many people mix two worlds:
| Topic | Context |
|---|
| XRechnung to authorities | long established, Leitweg-ID |
| B2B e-invoicing requirement 2026/2027 | ZUGFeRD and other EN-16931 formats |
Anyone who can only do XRechnung for authorities is not automatically ready for B2B – and vice versa. Both strands plan: create XRechnung, ZUGFeRD.
Costs and benefits
Investments
- Software license or module upgrade
- If necessary, Peppol or portal connection
- Training, process adjustment
To use
- less manual entry
- faster payment processes
- fewer errors in taxes and amounts
- better preparation for digital duties
For many SMEs, the change pays for itself through time savings in accounting alone - regardless of the law.
Risks of not converting
If the obligation applies to you and you continue to only send PDF:
- Invoices could be objected to as incorrect (please check details legally**)
- Customers reject billing or delay payment
- Competitive disadvantage for public and large private clients
It is cheaper to act early than to make hectic changes under deadline pressure.
Quotavo and your e-invoicing strategy
Quotavo supports you with writing invoices, quotes and customer management - the basis for compliant e-invoices. As an invoicing software for SMEs, the focus is on ease of use and prepared formats for the digital future.
Recommended way:
- Today: clean invoice processes in Quotavo
- Tomorrow: Activate ZUGFeRD for B2B customers
- Parallel: XRechnung for authorities with Leitweg-ID
Frequently asked questions about the e-invoicing requirement in 2026
Does the obligation also apply retroactively?
No – the legal deadlines from the date of entry into force are decisive. Old invoices remain under old law.
Can I still send a PDF?
As a sole B2B invoice, PDF is typically not sufficient if the obligation applies. ZUGFeRD contains PDF plus XML – this is the usual hybrid.
What if my customer doesn't know e-invoice format?
Transitional rules and practical solutions exist - seek legal advice and clarify with the customer.
Do I need Peppol?
Not necessarily for everyone - but some major customers and authorities use Peppol. Optional depending on customer structure.
More answers in the FAQ.
Step-by-step roadmap
Q3/Q4 2025
- Consultation appointment with tax advisor
- Software demo and format testing
- Set up the receipt process for e-invoices
2026
- Pilot customers on ZUGFeRD
- Stabilize XRechnung for public contracts
- Finalize documentation and archiving
From mandatory for your company
- Full B2B rollout
- Internal monitoring and support
- Annual update for standard changes (EN 16931, XRechnung version)
Conclusion
The e-invoicing requirement 2026 (and the stages before and after) changes how companies in Germany exchange invoices. Structured formats like ZUGFeRD and XRechnung are becoming the norm in B2B - PDF-only is not enough in the long term.
Use the remaining time for software, processes and agreements with customers. Read our basics on E-Invoicing, compare ZUGFeRD and XRechnung, and have your individual obligations legally checked - then the changeover will be plannable instead of stressful.
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