Payroll in your firm. Without the friction.
Keep your existing processes and DATEV setup. project b. adds structured client data intake, AI review, and a white-label portal, so your team spends less time chasing and more time on real work.
Fewer follow-ups. Fewer late evenings. More satisfied clients.
Payroll experience on our team
to your first payroll run
Certified information security
Data in EU data centers
"Payroll is not where we make money."
"Clients send data late and still expect it to be right."
"My payroll team is at capacity. But the work keeps coming."
If any of this sounds familiar, you are in the right place.
Where firm payroll keeps breaking down
Manual work and fragmented workflows
Data arrives via email, fax, Excel, and phone. Preparing it consumes time that should go to client service.
Constant back-and-forth with clients
Missing documents, late replies, follow-up questions on every payroll run. It costs nerves and money.
Overloaded team and talent shortage
Experienced payroll specialists are hard to find. New hires take months to become productive. The team runs at capacity.
Growth without profitability
More clients means more workload. Margin per client drops because labor costs outgrow revenue.
Two ways to better firm payroll
Whether you want to keep control or hand it off entirely.
Platform
Keep payroll. Gain efficiency.
- Clients deliver data digitally and structured
- RITA reviews, sorts, and prepares everything
- Seamless DATEV integration
- Your team invoices as usual, just faster
Outsourcing
Hand off payroll. Keep the client.
- Full payroll run handled by project b.
- Client relationship stays with your firm
- Dedicated contact for your practice
- Clients get a self-service portal for payslips and certificates
- ISO 27001 certified and GDPR compliant
- Access to relevant accounting data stays with you
What you and your clients actually see
project b. layers a clean digital surface on top of your DATEV workflow: for your Lohnbuchhalter, your Mandante, and their employees.
Client portal
Your Mandante deliver master data structured and on time. No more email chasing.
RITA, the AI reviewer
Validates completeness, flags inconsistencies, and structures messy client input, before it hits DATEV.
Structured data intake
Salary changes, new hires, absences: captured in one place and ready for clean export to DATEV.
Absence management
Vacation, sick leave, and special times: tracked once, fed cleanly into every Mandant payroll cycle.
Payslip distribution
Encrypted delivery to every employee at every Mandant. No more PDFs by email.
Change log
Every adjustment per Mandant auditable. Compliance and visibility for your firm, without anyone chasing it.
How project b. lands in your firm
Platform onboarding in days, outsourcing transition in weeks. Both predictable.
Platform onboarding
Day 1
Kickoff & data sync
We review your DATEV setup with you, identify the first Mandate to bring on, and sync existing data. No migration headache.
Day 5
Your team is trained
We work hands-on with your Lohnbuchhalter. The first Mandant goes live. Your team uses project b. alongside DATEV, exactly as before, just faster.
Month 1+
Phased client rollout
Each Mandant joins on their own pace: full portal, lightweight email-only, or full outsourcing. You pick the model per client.
Outsourcing transition
Week 1
Discovery call
In a focused conversation we clarify which Mandate will move over and define the timeline together.
Week 2 to 3
Mandant onboarding
We support the client communication, explain the process, and answer every follow-up question.
Week 4 to 6
Data takeover
Through the project b. platform we ensure a seamless transition: secure data takeover, process setup, and coordination of everyone involved.
Week 7+
Roll-out & support
After roll-out we serve your Mandate directly and run their operational payroll. Your long-term access to booking documents is guaranteed.
What changes for your firm
With the platform
Fewer follow-ups
Clients deliver data structured and complete. RITA automatically checks for completeness and flags missing items.
Payroll becomes profitable
Less manual work per client means the same revenue for significantly less effort.
DATEV stays DATEV
project b. complements your existing system. No migration, no parallel processes.
Team gets breathing room
Routine tasks are automated. Your team can focus on complex cases and real advisory work.
With outsourcing
Relief from day-to-day operations
Hand off operational payroll processing, including authority communications, and reclaim valuable time.
Predictability & scalability
Structured processes without staffing risk. Scales with growing payroll volume, even without new hires.
Legal certainty & quality
Experienced payroll specialists guarantee top quality. Our infrastructure is GDPR-compliant and ISO-certified.
What your clients get
A personal contact
We give your clients a fixed point of contact who handles every request and ensures personalised service, without disrupting your relationship.
Sector expertise
Our payroll specialists know the specific demands from construction to the public sector. We engage thoughtfully with individual special cases and companies of every size.

Built by payroll experts who lived your problem
We've run a payroll bureau ourselves, built ITSG-certified software, and seen exactly where firm payroll breaks down. Our team brings 100+ years of combined payroll experience.
When you put your Mandante's payroll on project b., you're working with people who understand a Steuerberater's world from the inside. Not a black box.
Frequently asked questions
How is this different from DATEV alone?
DATEV stays your payroll system. project b. is the layer in front of DATEV: structured client data intake, AI review, and a client-facing portal. We feed clean, validated data into your existing DATEV setup. No migration, no parallel processes.
Will my Lohnbuchhalter actually adopt this?
The interface is built with Lohnbuchhalter, not for them. Workflows mirror how they already work, just with the chasing taken out. Onboarding includes hands-on time with your team. Most firms see their senior staff become the strongest advocates within a few weeks.
What if a Mandant won't go fully digital?
We support multiple collaboration models per Mandant. Some clients use the full portal; others just send data by email and RITA structures it. You pick the right level for each Mandant. No client gets forced into something they resist.
Can I outsource only some Mandate to project b.?
Yes. The Platform path and the Outsourcing path can mix freely. Keep payroll in-house for the Mandate where it makes sense, hand off the ones where the margin or the load makes outsourcing the better choice.
What does project b. cost?
Pricing scales with active employees across your Mandant book: transparent, predictable, no setup fees. Get in touch and we will quote you specifically based on your firm size and the client mix.
How secure is my clients' data?
project b. is ISO 27001:2022 certified and fully GDPR compliant. All data is encrypted at rest and in transit, and stored exclusively in EU data centers.
Rethink payroll in your firm
Platform or outsourcing: find the right fit in a 30-minute demo.