My fees are calculated based on the time spent.
As a standard, the hourly rate is €400 excluding VAT for businesses and €480 including VAT for individuals.
Exceptionally, and for long-term assignments, I can offer a fixed fee. In this case, the fixed fee is based on a predictable estimate of the time required to complete the assignment. If, unpredictably, the actual time proves significantly higher, additional time may be billed.
Similarly, a success fee may be agreed upon as a complement to time-based or fixed-fee compensation.