The entire project cycle in one central system
Professional Services Automation for management consulting, IT consulting, and engineering: quotes, services, travel expenses, and invoicing. Project-to-bill in one system.





More than 3,000 companies rely on ZEP







































software for the entire project business
With ZEP Professional, you can digitalize every phase of your project, from planning to travel expense management. Legally compliant and paper-free.
Create, approve, and send quotes centrally
Quotes are created from standardized templates, follow your approval rules, and are sent directly to the customer from ZEP Operations. The quote is the first data record in the chain, not just a separate document: once accepted, it automatically generates the project structure.
"With ZEP, I can map out an end-to-end process for quotes, project execution, and invoicing."
"With ZEP, I can map out an end-to-end process for quotes, project execution, and invoicing."
Invoices are generated based on what has been booked
Expenses flow directly from the order into the invoice—personalized, sent automatically, and e-invoice compliant—using AI commands instead of spreadsheets. Unbilled services are flagged before the month is closed.
"The permission system is also smart, allowing different roles to perform their functions without having to grant overly extensive access rights."
"The permission system is also smart, allowing different roles to perform their functions without having to grant overly extensive access rights."
Travel expenses and receipts directly linked to the project
Upload receipts on the go via camera, including currency conversion and automatic per diem calculations. Costs end up exactly where they are billed.
"The biggest advantage is the seamless chain from recording to invoicing: time and travel expenses are entered directly on the go and land immediately with the project manager."
"The biggest advantage is the seamless chain from recording to invoicing: time and travel expenses are entered directly on the go and land immediately with the project manager."
Adjustable hourly and daily rates per employee, customer, and project
Flexibly define and manage hourly and daily rates for employees, customers, and projects. Maintain a clear overview through automated calculations and centralized reporting.
“Automation handles a lot of the work for us that we previously had to do manually.”
“Automation handles a lot of the work for us that we previously had to do manually.”


The entire project business on one platform
More than 3,000 companies already rely on ZEP
The time tracking of choice — from startups to large corporations.




“Ideal employee management support thanks to a 360 degree view of employee availability, daily reports and automated vacation and absence management.”
“Comprehensive solution for recording project and working times. In particular, compliance with legal regulations (minimum rest time, break times, maximum working hours, etc.) can be tracked very well. “
“We have been using ZEP for over 10 years to record working hours (billable, non-billable). This is a great basis for invoicing our customers.”
“ZEP impresses with its intuitive time and project management and offers excellent customer support!”
“Quick project bookings and evaluations. Yet a high degree of flexibility. Good modular design. You can easily adapt the system to your own needs.”
“We use ZEP for precise time recording, vacation management and absenteeism. With ZEP, our employees can also record their working hours while working from home, which enabled us to replace several previously used tools.”
“Ideal employee management support thanks to a 360 degree view of employee availability, daily reports and automated vacation and absence management.”
“Comprehensive solution for recording project and working times. In particular, compliance with legal regulations (minimum rest time, break times, maximum working hours, etc.) can be tracked very well. “
“We have been using ZEP for over 10 years to record working hours (billable, non-billable). This is a great basis for invoicing our customers.”
“ZEP impresses with its intuitive time and project management and offers excellent customer support!”
“Quick project bookings and evaluations. Yet a high degree of flexibility. Good modular design. You can easily adapt the system to your own needs.”
“We use ZEP for precise time recording, vacation management and absenteeism. With ZEP, our employees can also record their working hours while working from home, which enabled us to replace several previously used tools.”
More than just project management
Say goodbye to complex Excel spreadsheets of tedious working time evaluation and ensure legally compliant working hours.


Illustration of the project structure using processes and activities
Identify billable times and carry out project-specific evaluations.

Seamless transfer to accounting
Record travel expenses directly on the go, including currency conversion and automatic additional catering expenses.

Generate cross-project reports with one click
Define rates with precision and let ZEP Operations handle the calculations for your estimates, reports, and invoices alike.


Record project times and receipts on the go
Easily track project times, absences & travel expenses from anywhere in the ZEP app.

Budget control through comparison of turnover and costs
Define your prices, compare planned sales with internal costs and thus get a clear overview of project profitability.

Secure access for your entire team
With advanced role and rights management, you can define exactly who can see and edit which data.
Overview of all product lines
ZEP Operations includes everything from ZEP Control and completes the chain through to invoicing.
ZEP Track
Log time to projects and clients – and know exactly where your hours are going.
€12 with monthly payment
ZEP Control
Manage projects with key metrics, capacity utilization, and financial insights – no additional board tool needed.
25 € with monthly billing
ZEP Operations
The entire project lifecycle on a single data basis – from quote to invoice.
€35 with monthly payment
ZEP Business
Organization-wide management across multiple entities.
€45 with monthly billing
All prices per user per month, plus VAT.
FAQs
Frequently asked questions and answers about ZEP.
How does ZEP Professional simplify travel expense recording and billing?
ZEP Professional enables central administration of hourly and daily rates per employee, project and customer. By integrating billing rates directly into the system, administrative costs are reduced and the error rate is reduced. The flexible adjustment of rates to the specific requirements of projects or customers ensures transparent and error-free travel expense reporting.
How does ZEP Professional support project controlling and the evaluation of working hours?
ZEP Professional provides detailed recording of working hours, which enables a precise evaluation of the hours booked for projects and processes. It reduces the effort required for manual entries and offers comprehensive project reporting functions that optimize the tracking of project progress and workload. This gives project managers a clear basis for decision-making for better management and resource planning.
How does ZEP Professional make it easier to plan and manage project hours?
With ZEP Professional, fixed or dynamic planning hours can be stored for every project and process. The software offers central management of planning hours, including target/actual comparisons and notifications when time quotas are exceeded. This increases transparency, reduces administrative costs and enables flexible adjustment to dynamic project requirements.
How does ZEP Professional support precise and efficient project time recording?
ZEP Professional enables detailed recording of working hours at customer, project and sub-project level. It distinguishes between billable and non-billable times and makes it easier to allocate working hours to specific projects and processes. Centralized recording and clear identification avoid inaccuracies and loss of information, which leads to improved billing and project overview.
How many systems can be connected?
Unlimited, in every ZEP product line, with no quota and no tiering by plan. Ready-made integrations exist for DATEV invoices and financial accounting, HubSpot and Salesforce, among others. ZEP's own APIs (REST, SOAP) and single sign-on are included everywhere as well.
Do we have to implement an ERP for this?
No. ZEP Operations consolidates the tools around the project business without replacing your financial accounting. Implementation takes two to three weeks, not months, and you get a dedicated contact instead of a call center.
Does it pay off, or is it just process cosmetics?
The benefit is measurable in billable hours. One customer puts it this way: “By using ZEP, we significantly increased the share of billable hours and grew revenue well beyond the cost of ZEP.” 76% of customers at this tier bill with ZEP, and 25% also use quote creation.
When is ZEP Operations enough, and when do I need ZEP Business?
ZEP Operations steers the project business of one legal entity. ZEP Business steers the entire organization: multiple legal entities, intercompany billing and document management. As long as you run one legal entity, ZEP Operations is enough.
What is the difference between ZEP Control and ZEP Operations?
ZEP Control stops at revenue and costs. ZEP Operations issues the invoice, with quote creation, travel expense accounting, supplier management and the export to project-specific financial accounting. If your project controlling is in place but billing still happens elsewhere, ZEP Operations is the right product line.
Who is ZEP Operations for?
For heads of operations, finance leads, PMO directors or commercially minded managing directors who are responsible for the profitability of the project business and for the tool landscape. Typical triggers are margin and cash pressure, tool consolidation, slow billing or an ERP that is too heavyweight for the project business.
What does Project-to-Bill mean in practice?
Project-to-Bill means that quotes, booked hours, travel expenses, supplier services and invoices sit on one data basis. There is no handover between four tools that can get lost, and no month-end deadline at which someone pulls everything together. The invoice is generated from what was actually booked.
What is ZEP Operations?
ZEP Operations is Professional Services Automation for management consulting, IT consulting and engineering. Quotes, booked hours, travel expenses, supplier services, invoices and the export to project-specific financial accounting run in one system. ZEP Operations costs €29 per user per month on an annual contract, €35 on a monthly plan.





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