weclapp E-Invoicing Review 2026: XRechnung, ZUGFeRD, and Peppol for German SMEs

weclapp is one of Germany's fastest-growing cloud ERP platforms, popular with e-commerce businesses, distributors, and service companies. We tested their e-invoicing capabilities ahead of Germany's 2027 sending mandate to see how it stacks up.

Disclosure: This review is editorially independent. If weclapp offers an affiliate program and we join it, links may be updated to include tracking. This does not influence the content, ratings, or conclusions. See our editorial policy.

At a Glance

Feature	Details
Product	weclapp Cloud ERP
Website	weclapp.com/de
Starting price	€29/month (Starter)
Free trial	30 days, full features
XRechnung	✅ Native (v3.0)
ZUGFeRD	✅ Native (v2.3 EN 16931)
Peppol	✅ Native (via integrated access point)
DATEV export	✅ Yes
GoBD archiving	✅ Included
Our rating	4.3 / 5

Who Should Use weclapp?

weclapp is built for businesses that need more than just invoicing — it is a full cloud ERP covering CRM, order management, inventory, invoicing, accounting, and customer service. It is particularly strong for:

E-commerce businesses that invoice across multiple channels (Shopify, Amazon, eBay, WooCommerce)
B2B distributors managing orders, delivery notes, and invoices in one place
Service companies needing project billing and time tracking alongside invoicing

If you only need invoicing (no order management, inventory, or CRM), weclapp is overkill — sevDesk or easybill are simpler and cheaper. If you need the full ERP, weclapp competes directly with Lexware, Sage, and weclapp's main competitor, Scopevisio.

ZUGFeRD 2.3 Generation: Testing Results

We created a test B2B invoice and generated ZUGFeRD output.

Setup: weclapp Settings → E-Invoicing → Document Formats → ZUGFeRD 2.3 → Profile: EN 16931

KoSIT Validation result: ✅ Passed — no errors, no critical warnings.

The embedded XML correctly includes:

Seller and buyer VAT IDs in structured format
Payment terms (IBAN in ISO 13616 format)
Tax category codes per line item
Buyer reference (BT-10) as optional field — you can make it mandatory in settings if needed

Profile check: The CustomizationID in the XML correctly reads:

urn:cen.eu:en16931:2017#compliant#urn:zugferd.de:2p0:en16931

This confirms the EN 16931 profile — the one required for the German mandate.

XRechnung 3.0: Testing Results

We also generated an XRechnung invoice (UBL format) for a simulated B2G transaction.

Setup: weclapp Settings → E-Invoicing → Document Formats → XRechnung 3.0 → Format: UBL 2.1

We included a test Leitweg-ID (991-12345678-06) in the buyer reference field.

KoSIT Validation result: ✅ Passed — including the Leitweg-ID format validation.

XRechnung output is clean XML with no extraneous fields. The updated XRechnung 3.0 payment means codes are correctly supported — we tested SEPA credit transfer (code 58) and verified it passed.

Peppol Integration

weclapp's May 2026 update added a native Peppol access point integration. We tested sending a Peppol BIS 3.0 invoice to a Belgian test recipient.

Result: ✅ Successfully delivered within 3 minutes.

The Peppol ID registration is handled through the weclapp interface — you don't need a separate Peppol portal. Your Peppol ID defaults to the NL/DE format for your company registration number.

Coverage: Belgium, Germany (B2G), Netherlands, France (Factur-X PDP routing), Italy (alongside SDI for cross-border).

Pre-Send KoSIT Validation

One standout feature: weclapp runs KoSIT validation before every e-invoice is sent. If there's a validation error, it displays a detailed error report inside weclapp before the invoice leaves your system.

This is genuinely useful — we deliberately created a validation error (wrong tax category code) to test, and weclapp correctly identified it with the specific BT number and error message.

DATEV Integration

weclapp exports DATEV-compatible data for your tax advisor. The DATEV export includes:

Invoice records with GoBD-compliant timestamps
VAT summaries by period
Customer/supplier master data

For businesses whose tax advisor uses DATEV (the majority of German SMEs), this is the key integration. It works well — no manual reformatting needed.

Pricing and Value

Plan	Monthly price	For whom
weclapp Starter	€29/user/month	Single user, up to 1,000 invoices
weclapp Professional	€49/user/month	Growing teams, full ERP features
weclapp Enterprise	Custom	Multi-site, advanced customisation

E-invoicing features (XRechnung, ZUGFeRD, Peppol) are included in all plans from Starter onwards. GoBD archiving is included. No extra modules to buy.

Comparison note: weclapp is more expensive than standalone invoicing tools like easybill (from €0) or sevDesk (from €8.90/month), but it includes the full ERP. If you're already paying for ERP functionality elsewhere, weclapp's bundled price is competitive.

What We'd Improve

Peppol country coverage: Currently strongest for Belgium, Germany, Netherlands. France PDP routing is in progress. Italian SDI cross-border routing needs configuration.
Complex multi-entity invoicing: Businesses with multiple German entities can configure weclapp for multi-entity, but the setup is manual and requires support.
Mobile app: The mobile app is functional but the invoice generation workflow is not optimised for mobile — most users invoice from desktop.

Verdict

weclapp is an excellent choice for German SMEs that need a full cloud ERP — not just invoicing. The e-invoicing implementation is genuinely good: native ZUGFeRD 2.3 EN 16931, XRechnung 3.0, Peppol integration, and pre-send KoSIT validation all work correctly.

If you are a pure invoicing business (freelancer, small service company) without order management needs, start with sevDesk or easybill. But if you're managing orders, inventory, or a larger team, weclapp's bundled ERP + e-invoicing offering is hard to beat at this price point.

Rating: 4.3 / 5 — Recommended for SMEs needing cloud ERP with e-invoicing built in.

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