Boekhouder/belastingadviseur gezocht voor advies beginnend zzp-er (Engelssprekend)

Diensten
Advies over belasting en administratie

Toelichting op de werkzaamheden
At the moment I am hired by a recruiting company A to work for a medical device company B (it has been a year). This company B might take me in for a permanent contract within 4-5 month.
I am interested in working for the recruiting company instead of a usual hire, as a ZZP, because they also give me that option.
But I am doubting if this is possible by law to be a ZZP for perhaps 4-5 months, and will it be considered a double income if I register my ZZP to the belastingdiesnt in the middle of tax year like this?
If this is advisable, then I will ask for your advise to further arrange my ZZP tax reporting and bookkeeping.
I would prefer an English speaking advisor.

Deadline
Zo spoedig mogelijk