Free until 1 Sept 2026 — no credit card.

— § 14 UStG receiving mandate since 01 Jan 2025 —

Invoice inbox.
Review. Approve.Archive.

e-Rechnung Inbox is a German B2B SaaS for SMEs and tax advisors that centrally receives XRechnung and ZUGFeRD invoices, validates them against EN 16931, documents approvals, archives them in a GoBD-ready process, and hands them off as DATEV CSV or an accountant package. This keeps invoice intake calm and traceable from receipt to handoff.

Updated: Jul 3, 2026

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Start for free For tax advisors

— INBOX · GOBD ARCHIVE —

This is what your inbox looks like

ihrname@e-rechnung-inbox.deKOPIEREN

▸Weber Elektro & Anlagen GmbH
EN 16931 validiert · Export bereitVALID€ 12.489,00

▸Müller Sanitärtechnik GmbH
ZUGFeRD · Freigabe dokumentiertOK€ 847,30

▸Grünwald Gartenbau GmbH
IBAN-Abgleich offen · WiedervorlagePRÜFEN€ 212,90

▸Hanseatic Logistik UG
GoBD-Archiv · CSV-Zeile vorbereitetARCHIV€ 48,60

For businesses

One inbox for every supplier invoice.

No new accounting software. No migration. Give your suppliers an address — we handle the rest.

For SMBs →

For tax advisors

Every client. One dashboard. Clean DATEV exports.

80 clients, 80 inboxes, one screen. Month-end in minutes, not days. White-label available.

For firms →

— Product philosophy —

No DMS. No ERP. No accounting system.
Just inbound e-invoicing — done right.

We curate one thing: receiving e-invoices. No add-ons, no modules, no product ladder. If you need a full accounting suite, an ERP replacement, or a document management system — we are deliberately not it.

— The problem —

3.5 million SMBs must receive e-invoices. Most can't even open them.

The mandate is here. The tools aren't.

SMB

'What's an XML file?'

Supplier sent an XRechnung — you see cryptic code. No PDF attached. No clue if it's valid.

Tax firm

'80 clients, 80 chaotic folders.'

Each client collects invoices differently: email, WhatsApp, paper. Month-end becomes archaeology.

ERP overkill

'Do I really need SAP?'

lexoffice, sevDesk, DATEV — all full accounting suites. You only want to receive.

GoBD

'Is this even compliant?'

8-year archive with SHA-256 hash, audit trail and active DB-level immutability triggers — GoBD-aligned. A Gmail folder does not cut it.

— How it works —

Six steps. One of them is yours.

Inbox@ · XML

EN 16931XRechnung · ZUGFeRD

GoBDSHA-256

DATEVEXTF · CSV

— 01 —

Claim an address

Pick a slug. Done: yourname@e-rechnung-inbox.de — in under 60 seconds.

— 02 —

Notify suppliers

Pre-written notice. One click, every contact gets your new invoice address.

— 03 —

Automatic validation

Every invoice passes four layers: format, profile, business rules, cross-checks.

— 04 —

GoBD archive

SHA-256 hash, timestamp, audit trail and active DB triggers. Frankfurt hosting. 8-year audit-ready archiving.

— 05 —

Review & approve

Workflow states: New → Reviewed → Approved → Exported → Paid. Notes, assignment, comments.

— 06 —

Export

One click: DATEV CSV or tax-advisor package ZIP with originals, previews, manifest, booking suggestions and README.

— A look inside —

This is what your invoice inbox looks like.

No mock-ups: real screenshots from the product. From the dashboard through automated validation to the DATEV export — every feature, on real sample data.

Dashboard — every metric, the invoice lifecycle and your top suppliers at a glance.

Inbox — each invoice with amount, validation and workflow status, sortable and filterable.

Invoice detail — checked line items, EN 16931 report, original file and a complete history.

DATEV export — CSV or tax-advisor package in one click, ready to export.

Monthly close — export readiness and compliance rollup per month.

Supplier management — master data and spend analysis per supplier.

— The legal timeline —

Where we are today, what's coming.

01 Jan 2025Active

Mandatory receiving for everyone

Every B2B company in Germany must be able to receive e-invoices — regardless of size or revenue. Even Kleinunternehmer.

Active

until 31 Dec 2026In 5 months

Sending still optional

Paper and PDF may still be sent, provided the recipient agrees. Time to prepare.

In 5 months

01 Jan 2027In 6 months

Large firms must send (>€800k)

Companies with prior-year revenue above €800,000 must send e-invoices. Paper becomes invalid.

In 6 months

01 Jan 2028In 18 months

Everyone must send

Every B2B company, no exceptions. End of paper invoicing. National e-reporting system may follow.

In 18 months

— Why us —

We're not building an ERP. We're building the inbox.

The difference is focus. One tool that does one thing precisely — instead of five things halfway.

	e-Rechnung Inbox	lexoffice / sevDesk	DATEV
Focus	Only inbound invoices	Full accounting	Firm ecosystem
Setup	Email address, done	Account + all modules	Via tax advisor
From	€ 9.99 /month	€ 12–35 /month	Included in fees
Multi-client dashboard	✓	Portal (limited)	✓
GoBD archive 10 yrs	✓	Possible surcharge	✓
DATEV export (today, more to follow)	✓	Own ecosystem	DATEV only
Invoice writing	— (by choice)	Core feature	Via advisor

— Roadmap · What's coming next —

The moat is under construction.

We ship continuously. These features arrive over the coming months — public, measurable, tested.

POST-GA · Q3 2026

Send and receive via Peppol

International invoices over the Peppol network — EU-wide preparation for ViDA 2030.

POST-GA · Q3 2026

Hosted MCP tier with API keys

The local npm package is published. Next comes a hosted, metered tier with API keys for teams and integrators.

POST-GA · ENTERPRISE

Prepare enterprise certifications

Audit readiness, policies and external review paths for larger customers — without claiming certification before completion.

— Plans —

Transparent. No setup. No contract.

From

€ 9.99/month

Free until 1 Sept 2026 · plan prices apply afterwards · plus VAT.

One company · up to 50 invoices/month (Starter plan)
XRechnung + ZUGFeRD validation against EN 16931
GoBD archive (Frankfurt, 10 years)
DATEV CSV export
Email support

Teams, firms, white-label — on request

See all plans Start for free

— Trust & compliance —

Built for the tax audit. Not for the gallery.

EN 16931

European e-invoicing standard. XRechnung CIUS and ZUGFeRD Comfort+ profiles are validated.

GoBD-aligned archiving

SHA-256 hash per file · timestamp · audit trail · 8-year audit-ready archive with active DB-level immutability triggers.

GDPR · EU hosting

Data center Frankfurt (eu-central-1), EU infrastructure. The DPA template is linked in the footer.

Encryption

TLS in transit and at-rest at the hoster. Two-factor authentication available on the account layer.

VAT ID verification

Organization-wide checks via BZSt and VIES with a 30-day cache — an additional plausibility check for client and supplier data.

— Is this a fit? —

Is e-Rechnung Inbox right for you?

Straight answer so you don't waste time.

Good fit if you…

run a 1–50-person B2B trades, service, or retail business
use a tax advisor on DATEV, Lexware, or sevDesk
have no ERP, or an ERP without a proper e-invoice inbox
want to be ready for 2027 without replacing your whole stack
value German compliance (GoBD · GDPR · Frankfurt hosting)

Not a fit if you…

are looking for a full document management system (DocuWare, d.velop)
want to also write outbound invoices — that's what lexoffice or sevDesk are for
keep accounting in-house and need Peppol outbound from day one
need an enterprise solution with a dedicated partner channel
don't actually have standardized XRechnung or ZUGFeRD inbound invoices

— FAQ —

What people typically ask.

Isn't a PDF also an e-invoice?

No. A regular PDF is the digital photo of a paper — machines can't read it. An e-invoice is structured XML per EN 16931. Only XRechnung and ZUGFeRD (Comfort+) legally count as e-invoices from 2025.

Do I need to forward my existing email?

No. You get a separate address used only for invoices — e.g. yourname@e-rechnung-inbox.de. Your business email stays untouched. Custom domains can be connected today; the route is automated through Mailgun.

We use DATEV. Does this fit?

Yes, directly. We export DATEV CSV and a tax-advisor package ZIP with originals, previews, manifest, booking suggestions and README. Direct DATEV transfer remains beta and production-approval gated.

What about Kleinunternehmer?

Kleinunternehmer must also be able to receive e-invoices from 2025. The receiving mandate applies regardless of revenue or size. You may still send as before.

Can I write invoices with this?

Deliberately no. e-Rechnung Inbox is strictly a receiving and validation system. For outbound, we recommend lexoffice, sevDesk or your existing ERP.

Where is my data stored?

Frankfurt (eu-central-1), EU infrastructure. The hoster operates a certified data center. The DPA template is linked in the footer; process documentation is generated inside the workspace and can be exported there.

— Tax-advisor partner program —

Your tax-advisor channel, monetised.

For every client you onboard through your firm panel, we share 30 % of the monthly revenue with you — for the first 6 months.

Become a partner

30 % revenue share

Your clients pay us. We pay you 30 % of that — automatically.

6-month term

After 6 months the standard plan takes over. No lock-in for clients, no re-negotiation for you.

Transparent payouts

Payout once your balance reaches €25, via manual SEPA transfer. Dashboard view.

— Start for free now —

The mandate is law.
The fix is simple.

Start for free · free until 1 Sept 2026 · no credit card · no setup.

Start for free For firms

Invoice inbox. Review. Approve.Archive.