Blog

Insights, tips, and news about ERP for service providers.

This is where the founders of rwQUANTICAL write about what occupies project-based service firms day to day: the German time tracking obligation and its consequences, how to calculate a day rate that holds up, how to choose PSA software, and the point at which Excel stops working as a tool for time tracking and controlling.

The articles grow out of consulting engagements and out of building QUANTICAL.ERP. They name figures, calculations and sources so you can check the claims yourself.

Pricing15.06.2026

How to Calculate a Consulting Day Rate: Formula, Benchmarks, the Margin Mistake

A day rate from the gut never holds up. The formula, a worked example, DACH benchmark bands - and the calculation mistake almost every firm makes.

11 min read

Lucas Rachner

PSA Tools06.05.2026

How to Find the Right PSA Software for Consulting Firms

Professional Services Automation (PSA) software is the digital backbone of knowledge work. But how do you find the right PSA tool?

9 min read

Benedikt Willwerth

Compliance02.02.2026

Time Tracking Obligation 2026: What Service Providers Face Now

From 2026, electronic time tracking becomes mandatory in Germany. Federal court ruling, fines up to €30,000, and what you need to do now.

10 min read

Benedikt Willwerth

Produktivität02.01.2026

5 Reasons Why Excel Time Tracking Is Costing You Money

Excel is not a time tracking system. An ROI calculation shows: switching saves a 10-person team over €48,000 per year.

8 min read

Lucas Rachner