You can use this tagger (https://github.com/evanmiltenburg/Dutch-tagger) to tag dutch sentences. The accuracy is 97%.
Example (Using PerceptronTagger)
from nltk.tag.perceptron import PerceptronTagger
# This may take a few minutes. (But once loaded, the tagger is really fast!)
tagger = PerceptronTagger(load=False)
tagger.load('model.perc.dutch_tagger_small.pickle')
# Tag a sentence.
tagger.tag('Alle vogels zijn nesten begonnen , behalve ik en jij .'.split())
Output
[('Alle', 'det__indef'), ('vogels', 'nounpl'), ('zijn', 'verbprespl'), ('nesten', 'nounpl'), ('begonnen', 'verbpapa'), (',', 'punc'), ('behalve', 'conjsubo'), ('ik', 'pronpers'), ('en', 'conjcoord'), ('jij', 'pronpers'), ('.', '$.')]
