EIMS
Self-hosted invoice management built for the German Rechnung standard. Create professional invoices, manage clients, generate PDFs, and keep a full audit trail — all in one place.
Invoicing Shouldn't Be This Painful
Manual Formatting
Creating invoices in Word or Excel wastes hours on formatting and risks calculation errors every month.
Expensive SaaS Tools
Cloud invoicing platforms charge €10–€50/month and hold your data hostage on their servers.
No Audit Trail
Without proper versioning and logging, you can't prove what changed when during a Finanzamt audit.
Not German-Standard
Most international tools don't match the standard German Rechnung layout expected by businesses and tax offices.
Professional Invoicing, Zero Complexity
Everything a German freelancer or small business needs to create, manage, and export invoices
Split-Screen Live Preview
Create invoices with a split-screen editor — see your changes rendered in real time as you type line items, prices, and notes.
German Rechnung PDF
Generate pixel-perfect PDFs that match the standard German invoice layout — ready for your clients and the Finanzamt.
Client Management
Maintain a full client database with customer numbers, addresses, and contact details. Auto-populate invoices in one click.
Multiple Company Profiles
Manage invoices for multiple businesses or brands from a single account — each with its own logo, address, and bank details.
Invoice Duplication
Duplicate any invoice in one click for recurring clients. Edit only what changed — save time every billing cycle.
Full Audit Log
Every change is recorded with before/after snapshots. Complete traceability for tax audits and internal compliance.
From Setup to First Invoice in Minutes
No complex onboarding — just set up your company and start invoicing.
Set Up Your Company
Add your company details, upload your logo, and configure bank information. Supports multiple company profiles.
- Company profile with logo
- Bank details & tax ID
- Multiple business support
Create Invoices
Use the split-screen editor to build invoices with live preview. Add line items, VAT, discounts — totals calculate automatically.
- Live preview editor
- Auto-calculated totals & VAT
- Separate delivery addresses
Export & Track
Generate professional PDFs, track invoice status, and monitor revenue — all from your dashboard.
- German-standard PDF export
- Status flow: Draft → Sent → Paid
- Revenue dashboard & stats
Your Data, Your Server, Your Control.
Unlike cloud invoicing tools, EIMS runs on your own infrastructure. No monthly SaaS fees, no vendor lock-in, and complete ownership of your financial data — exactly what GDPR demands.
GDPR by Design
Host on your own server in Germany. Full control over data retention and deletion.
Full Audit Trail
Every invoice change recorded with before/after snapshots — Finanzamt-ready at any time.
No Vendor Lock-In
Export your data anytime. No monthly subscription traps or forced migrations.
Docker-Ready Deployment
Deploy with Docker Compose in minutes. Includes Nginx, PostgreSQL, Redis, and CI/CD pipeline.
Tech Stack
Backend
Frontend
Infrastructure
Built by Brandenburg Data Consulting
EIMS is developed and maintained by our team. Hosted on our secure German infrastructure with ongoing updates and support.
Ready to Ditch Spreadsheet Invoicing?
Self-hosted, GDPR-compliant, and built for the German Rechnung standard. Deploy on your own server in minutes.