For companies still collecting invoices by email: review technical findings, prepare clarification and hand eligible e-invoices to your tax adviser.
No credit card. Charges only begin after your explicit paid order.
Illustrative scene · AI-generated
One possible workflow for a technical issue. You retain responsibility for the substantive review and decide what goes to your tax adviser.
A supported e-invoice is not ready for export yet. Its invoice data, report and reason remain together in the same record.
Read the report and request a corrected file from the supplier if needed. Review and copy the message template; you send the message yourself.
Check the corrected invoice again and approve its content. Prepare eligible e-invoices as DATEV CSV/EXTF or an adviser package; your adviser imports the files.
Explore a clear workflow before you register.
Inbox · actual product interface with sample data, captured on 25 September 2026.
Illustrative scene · AI-generated
Give your suppliers a dedicated invoice address. The next invoice arrives where your team can work on it.
What is checked technically? Who operates the service? And what happens to your original files?
The KoSIT validator checks XRechnung and ZUGFeRD in the EN 16931 profile using the appropriate validation scenario. The report stays with the invoice. Plain PDF invoices are not checked with KoSIT. The technical check does not replace your substantive invoice review.
The available export route is DATEV CSV/EXTF. Starter includes individual invoice exports; Standard and higher include bulk export and archive ZIP. Direct transfer to DATEV Unternehmen online is in preparation. Import and substantive review are still required.
The primary storage is configured in Frankfurt. Other processing locations and recipients are listed in the privacy policy. Storage is available during active membership; you then have 30 days to export. You remain responsible for subsequent statutory retention.
Invalid XRechnung? We explain common findings in plain language – what is missing and what to do; for all others you see the KoSIT validator's message. Checked with the KoSIT validator, with the check report stored alongside the invoice. Applies to XRechnung and ZUGFeRD in the EN 16931 profile, not to plain PDF invoices.
No software switch: one package a month for your tax firm – posting batch in DATEV format (EXTF), the original file and check report for each approved e-invoice, SHA-256 checksums. Plain PDF receipts are not part of the package.
One invoice address for all suppliers: XRechnung, ZUGFeRD and PDF – including several attachments in one email, with no sender allowlist.
New bank details from a supplier? No export to your tax firm until the change is confirmed – in every plan, no add-on needed. We compare against the IBAN from this supplier's earlier invoices.
Original storage is available during active membership. After the paid period or free trial ends, customers have one month (30 days) to export their documents and then retain them under their own responsibility.
The technical check supports, but does not replace, your own review of the invoice.
Instead of a seal, we show you how retention and checks work here – and where you can recompute them yourself.
Every original file is stored with its SHA-256 checksum on receipt. On every download in the app, in every audit pack and on every hand-over to your tax firm it is checked against that checksum; if it differs, it is not delivered there.
For each invoice, a ZIP with the check report, the original file and checksums.sha256. You can recompute the checksums with your computer's built-in tools, without our software.
The check report names the KoSIT validator's version and validation scenario; the validator's original report is included in the audit pack.
There is no official GoBD certificate for software; the German tax authorities do not issue attestations for software. Responsibility for proper bookkeeping stays with your company.
The sample contains invented data only. Its KoSIT report is a reconstruction, not output from a real validator run. Like every audit pack, it is in German.
Verify the checksums after unzipping, inside the folder: sha256sum -c checksums.sha256 (macOS: shasum -a 256 -c checksums.sha256).
From Jan 1, 2025: All B2B companies must be able to receive e-invoices
From Jan 1, 2027: Companies with annual revenue above EUR 800,000 must send e-invoices
From 2028, domestic B2B generally requires e-invoices. Statutory exceptions apply.
Accepted formats: XRechnung (XML) and ZUGFeRD (PDF/A-3 with embedded XML)
Retention requirement: 8 years, unalterable and traceable under the GoBD
Register for free and get your personal e-invoicing address in minutes.
The photographic work scenes are AI-generated illustrations, not depictions of actual customers. The product views show the real application with sample data. DATEV is a registered trademark of DATEV eG; mentioning it does not imply approval of this product.
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