An email mailbox is legally sufficient as a delivery route, but it does not constitute a complete operational process. The business must recognise structured invoices, make them readable, review their content, assign them to a transaction and retain at least the structured data portion intact for eight years.
What being ready to receive means in practice.
Since 2025, a domestic business in Germany must be able to accept an e-invoice. The German Federal Ministry of Finance states that an email mailbox is a sufficient delivery route. In day-to-day operations, however, this results in several work steps:
- The file must reach the business reliably.
- The structured content must be made readable.
- The sender, supply, amount and mandatory information must be verifiable.
- The invoice needs a traceable approval and assignment.
- The original format must be preserved.
A business is therefore ready to receive e-invoices only when the email not only arrives, but the invoice remains traceable throughout the process through to the tax advisory firm.
Define the mailbox and responsibilities.
Use a permanent functional address rather than an individual employee's mailbox. This keeps invoices accessible during holidays, staff changes or changes in responsibilities.
| Decision | Clear operational rule |
|---|---|
| Receipt | Which address should suppliers use for invoices? |
| Initial review | Who checks the sender, supply and any formal irregularities? |
| Approval | Who confirms that the goods or services were actually received? |
| Handover | When and by which route does the firm receive the current data? |
How to recognise a genuine e-invoice.
An e-invoice contains structured data. For an XRechnung, this is generally an XML file. ZUGFeRD or Factur-X combines a visible PDF with embedded structured data. Not every ZUGFeRD profile automatically meets every tax requirement.
A simple PDF, scan or photo may qualify as another valid form of invoice, but it has not qualified as an e-invoice since 2025. The file extension alone is therefore not sufficient for classification.
Check the content and sender.
Structured data makes an invoice machine-readable, but not automatically correct. Continue to check:
- Is the supplier known and is the sender address plausible?
- Were the goods or services actually ordered and delivered?
- Are the invoice number, supply period and payment details correct?
- Are the net amount, tax rate and tax amount comprehensible?
- Are there discrepancies between the visible representation and the data portion?
Unexpected invoices and changes to bank details should not be confirmed directly from the email. Use a previously known contact route to the supplier.
Retain the original format.
Under section 14b UStG, incoming and outgoing invoices must be retained for eight years. For an e-invoice, at least the structured part must be preserved intact in its original form.
A printout does not replace the structured file. For hybrid invoices, the PDF portion may also have to be retained if it contains additional or divergent tax-relevant information. The retention process should therefore preserve the original file, the approval and the operational assignment together.
The complete receiving checklist.
- Set up a dedicated invoice mailbox and inform your suppliers.
- Clearly define team access and deputy responsibilities.
- Test receiving XRechnung and ZUGFeRD files and making them readable.
- Check the sender, supply, mandatory information and payment details.
- Assign the invoice to a purchase, contract or unresolved transaction.
- Document approval and any corrections in a traceable manner.
- Retain the structured data portion in its original format.
- Agree the handover route and monthly cut-off date with the tax advisory firm.
BuchhaltIQ brings receipts, invoices and unresolved transactions into a shared working status. The guide to mandatory e-invoicing explains the full timeline; the supported formats are listed on the features page.
Frequently asked questions.
Does every hospitality business have to receive e-invoices?
Since 1 January 2025, domestic businesses in Germany must be able to receive e-invoices. This also applies to hospitality businesses and businesses using the German small-business VAT scheme.
Can I request a PDF instead?
The statutory requirement to be able to receive e-invoices does not provide for a business to reject a compliant e-invoice as a matter of course. The business should therefore be able to accept and process structured formats in practice.
How can I recognise an e-invoice?
It contains structured data that can be processed electronically. Common formats include XRechnung and suitable ZUGFeRD or Factur-X profiles. A simple PDF, scan or photo is not an e-invoice.
How long do e-invoices have to be retained?
Section 14b of the German VAT Act (UStG) specifies eight years for incoming and outgoing invoices. For e-invoices, at least the structured part must remain intact in its original format. Other retention obligations may also be relevant.
Is it sufficient to save the visible PDF portion?
Not as a general rule. For an e-invoice, the structured data portion is decisive. In a hybrid format, the visible PDF portion may contain additional tax-relevant information and may then also have to be retained.
Sources.
This guide is not a substitute for tax or legal advice. Coordinate deadlines, data channels and responsibilities with your tax advisory firm.