For my company I hired an accountant in Groningen, The Netherlands. In my case BDO Groningen. They also advice on taxes but unfortunately don’t understand that their clients benefit from paying less taxes.
An advice I received was described too near in the invoice which resulted in not being able to deduct it from taxes as a cost.
After mailing a couple of times, the company never wanted to change the description in such a way that I could deduct it from taxes. While my company always plays by the rules, there were some good arguments why it could be changed, at least for part of the process.
The end result, a whopping 1400 EURO extra in tax obligations. Thank you BDO Groningen…