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fiskaly E-INVOICE

Introduction

fiskaly E-INVOICE is a cloud-based electronic invoicing solution that enables POS providers, ERP system vendors, and businesses to create, validate, send, and receive electronically structured invoices in compliance with the European Norm EN 16931. The service uses the Peppol network as well as country-specific transmission channels (e.g. the Italian SdI) and email delivery for the transmission and receipt of e-invoices, and ensures that all outgoing invoices are fully compliant before delivery. It is accessed via a RESTful API and managed through the fiskaly HUB. The service is currently available in Belgium, Germany, and Italy, with additional European markets planned.

Service Description

fiskaly delivers the fiskaly E-INVOICE service to the CUSTOMER, enabling the following:

E-invoice creation: Based on the invoice data submitted by the CUSTOMER, the service generates electronically structured e-invoices that comply with the format requirements of EN 16931 (European Norm). This includes country-specific formats (e.g. ZUGFeRD and XRechnung for Germany, FatturaPA for Italy); the CUSTOMER can select the desired e-invoice format.
E-invoice transmission via Peppol: E-invoices can be sent to recipients via the Peppol network.
E-invoice transmission via national networks: In Italy, B2B and B2C e-invoices are sent via the national exchange system (SdI); reception via the SdI covers B2B e-invoices.
Email delivery: Sending of the structured e-invoice by email (e.g. in Germany, when the recipient does not have a Peppol ID).
Pre-send validation: Before an e-invoice is transmitted, the service performs a validation of its format and structure in order to detect technical errors early, so that no e-invoices are sent that do not comply with EN 16931.
E-invoice reception: The CUSTOMER can receive national and international e-invoices via the Peppol network, and in Italy via the SdI.
Invoices and credit notes: In addition to invoices, credit notes can also be created and transmitted.
Archiving in Italy: In Italy, all e-invoices sent and received through the service are automatically archived in an audit-proof manner via a certified third-party provider. Archiving is an integral part of the service in Italy and cannot be opted out of; it covers both the active cycle (sending) and the passive cycle (receiving). Access to the archive is provided via the fiskaly API and is described in the API documentation.

Market availability: The above services are currently available in Belgium, Germany, and Italy (additional countries coming soon). The service supports B2B invoices in all available markets, and additionally B2C invoices in Italy (as these are also routed through the SdI). In Germany, invoices are generated in the ZUGFeRD or XRechnung format, with delivery by email or as XRechnung via Peppol. In Italy, invoices are generated in the FatturaPA format with delivery via SdI, for both B2B and B2C invoices. In Belgium, invoices are generated in the Peppol BIS 3.0 format with delivery via Peppol.

Optionally available (connected service):

fiskaly SAFE flex integration: Automatic archiving of sent and received e-invoices available via the fiskaly SAFE flex API (subject to separate pricing).

📘Note

fiskaly’s scope of services does not include: integration into recording systems; development of individual solutions or adaptations; training services; provision of internal documentation (except public integration instructions and API descriptions via workspace.fiskaly.com); data transfer services between the API and the END CUSTOMER’s IT systems; storage of data beyond the three (3) month period; support and assistance services not expressly specified in the contract; or other products of fiskaly.

Functionalities

Structured e-invoice creation: Generation of electronically structured e-invoices compliant with EN 16931, based on invoice data submitted via the API. Includes country-specific formats and format selection.
Format and structure validation: Automated pre-send validation against EN 16931 requirements, aiming to prevent non-compliant invoices from being transmitted. Depending on the selected format, automated pre-send validation against the country-specific formats (e.g. ZUGFeRD, FatturaPA).
Peppol transmission: Sending of validated e-invoices to recipients via the Peppol network.
Peppol reception: Receipt of national and international e-invoices via the Peppol network.
National transmission channels: Sending B2B and B2C e-invoices in Italy via the SdI (reception: B2B only).
Email delivery: Optional sending of structured e-invoices by email.
Credit notes: Creation and transmission of both invoices and credit notes.
Archiving (Italy only): Automatic, audit-proof archiving of all sent and received e-invoices — exclusively in Italy, where it is active by default.
API-first architecture: RESTful API for seamless integration into POS, ERP, or other invoicing systems.
Management via fiskaly HUB: Administration and configuration through the HUB, including guided onboarding and automated licensing.
Multi-market support: Currently available in Belgium, Germany, and Italy; additional European markets planned.

System Requirements

A valid contractual relationship with fiskaly permitting use of the service.
An internet connection for integration and operation.
Integration of the fiskaly E-INVOICE API into the CUSTOMER’s POS, ERP, or invoicing system.
A system capable of providing the necessary invoice data in the format and schema specified by fiskaly via the API.
Access to the fiskaly HUB for administration and configuration.
Per registered taxpayer entity, an uploaded proof of ownership and representation document to verify the taxpayer’s legal existence and registration status.

Maintenance and Support

fiskaly is committed to maintaining and updating the E-INVOICE service. fiskaly undertakes to maintain and update the Service with a view to supporting its security, availability, and ongoing alignment with applicable technical and reporting requirements; however, the Customer remains responsible for implementing required updates, migrations, and integration changes on its side. The service is versioned according to semantic versioning; significant changes resulting in new major releases will be documented. Maintenance activities may result in the temporary outage of the service. As far as possible, these activities shall be announced at least two (2) weeks in advance; emergency maintenance activities may deviate from this. fiskaly provides assistance to customers via the fiskaly support portal (support.fiskaly.com).

Testing

fiskaly provides a TEST environment for the E-INVOICE service. The TEST environment allows the CUSTOMER to validate its integration and e-invoice workflows before going live. fiskaly is not responsible if real data is provided in the TEST environment.

Service Limitations

The service currently supports Belgium, Germany, and Italy; additional country availability will be communicated as it becomes available.
In Italy, the service covers the sending of B2B and B2C e-invoices.
Tax-free shopping invoices for travellers resident outside the EU (transmission via the OTELLO 2.0 customs system to obtain the digital visto doganale) are not part of the service.
The SdI does not perform a validity check of the identifier provided by the consumer; the accuracy and completeness of recipient data are the sole responsibility of the CUSTOMER.
Automatic archiving of e-invoices via a certified third-party provider is available exclusively in Italy. In Belgium and Germany, no archiving is included in the service.
The completeness and correctness of the invoice data submitted by the CUSTOMER remain the CUSTOMER’s sole responsibility.
The validation performed by the service covers format and structure compliance with EN 16931; it does not verify the substantive tax correctness, legal classification, or business accuracy of the invoice content.
Receiving invoices via Peppol requires the recipient to have a valid Peppol ID; this is created automatically. If the CUSTOMER is already registered with another service provider, the CUSTOMER must carry out the de-registration (with the support of the previous service provider). Alternatively, delivery by email is available.
Changes in applicable laws, regulations, or Peppol network requirements may result in changes to the service.

Customer Obligations

Responsible for integrating the E-INVOICE API into the POS, ERP, or invoicing system.
Per registered taxpayer entity, an uploaded proof of ownership document to verify the taxpayer’s legal existence and the VAT identification number through the EU VIES system or an equivalent authoritative registry.
Customer shall fully comply with the applicable Peppol Authority Specific Requirements or equivalent jurisdiction-specific requirements applicable to that Sub-Merchant.
Customer shall maintain records of all KYC/KYB checks performed and shall make such records available to Provider upon request.
Customer shall perform ongoing monitoring of Sub-Merchant status, including periodic re-validation of VAT registration, and shall notify Provider without undue delay of any material change in a Sub-Merchant’s legal status, ownership, or VAT registration.
Customer warrants that it shall not permit any Sub-Merchant to access or use the Provider services unless and until the KYC/KYB due diligence described in this Section 2.5 has been satisfactorily completed.
Must provide complete, accurate, and timely invoice data in the format and schema specified by fiskaly via the API.
Must stay up to date and implement required new releases and integration changes as communicated by fiskaly.
Must ensure that the invoice data submitted complies with applicable legal and tax requirements; the service validates format and structure but not substantive content.
Must manage the activation, configuration, and use of the service via the fiskaly HUB.

Version: v.3 | Last updated: 2026/08/04