A flat fee agreement is the second possibility concerning remuneration. One core prerequisite is – just as for the above mentioned fees calculated in accordance with the regulation – that amount of work for the case can be reasonably estimated in advance. Flat fees are a adequate solution for day-to-day consultation – i.e. on the phone or briefly in writing – in a longer lasting client-counsel-relationship in order not to exceed a maximum fee. As always the amount of work for the case needs to be reasonably estimated in advance.