Features
Budgeting
Build accurate project quotes in minutes
Profitability
Take the guesswork out of project success
Controlling
Effortlessly achieve precise data quality
Reporting
Deep insights into your project business
OS/ AI
Der AI Agent für Agency Intelligence. Eingebaut in OS/.
Project billing & e-invoicing
Working hours and project time at a glance
Time tracking
Working hours and project time at a glance
Contacts
Keeping your customer and supplier data up to date at all times
Customer satisfaction
Give project stakeholders a voice
my OS/
Companion iOS and Android app for insights on the go
Solutions
Expected
Projects that meet all your expectations
True Labor Costs
Know your true labor costs down to the cent
Overhead Cost Factor (OCF)
Complete control over your overhead
Benchmarks
Gain clear insights into your competitive situation
Multi-company setup
Multiple companies, one team? Easy with OS/
Onboarding & User Support
No time for onboarding, training, and support? No problem with OS/
For
Workflows
E-billing from 2025: What will change and how OS/ can help you manage the transition

An important change will come into effect on January 1, 2025: electronic invoices will become mandatory in the B2B sector.
This means that companies will have to issue and process their invoices in a structured, digital format in the future. No more paper chaos and PDFs that are unreadable by machines.
The focus is now on efficiency, transparency, and error prevention.
But what does that mean for you and your company? And how can OS/ help you make the transition?
Here are the answers.
What is an e-invoice?
An electronic invoice is more than just a simple PDF file. It is created in a machine-readable, structured format—for example, in ZUGFeRD (a combination of a PDF for humans and XML for machines).
This format combines the best of both worlds: humans can read the invoice as usual, and digital systems can automatically process the data it contains.
The result: less manual input, fewer errors, and faster processes.
What is changing?
First things first:
From 2025 onwards, a simple PDF invoice will no longer suffice.
Companies must be able to create and process their invoices in a structured format. This includes standards such as ZUGFeRD or XRechnung.
The advantage: These formats allow invoice data to be imported directly into ERP systems or accounting software without the need for manual entry.
How does OS/ help with the transition?
This is where OS/ comes in. Our software makes switching to e-invoicing as easy as possible—without complicated tools or time-consuming workflows.
With OS/, you can:
- Create and send e-invoices directly
– automatically and in the correct format (ZUGFeRD). - Receive and process e-invoices
– OS/ automatically reads the data and integrates it into your financial processes. W - Work smoothly without additional software
– everything happens directly in your OS/ interface.
Our goal: to keep your workflow lean, efficient, and legally compliant.
Fazit
At first glance, switching to e-invoicing may seem like more work, but with OS/ at your side, it's as easy as possible.
We have thought through the details for you so that you can concentrate on your core business. Want to know how OS/ can support you with the switch?
👉 Book your demo now and be perfectly prepared.
We will show you how OS/ not only helps you meet legal requirements, but also allows you to benefit from the advantages of digitalization.
Free 6-week trial
Try OS/ for free with no obligation — with your entire team, full access to all features, and free support...
Are you looking for a consultation? No problem, just check here for an appointment:
Book a consulting

