class Task(models.Model):
    client_name = models.ForeignKey(Client,null=True,blank=True,on_delete=models.DO_NOTHING)
    description = models.CharField(max_length=255)
    due_date = models.DateField(null=True,blank=True,default=datetime.now)
    assigned = models.ForeignKey(User,on_delete=models.DO_NOTHING)

class FNTaskForm(ModelForm):
    class Meta:
        model = Task
        exclude = ()

TaskFormSet = modelformset_factory(Task, form = FNTaskForm, exclude=(),extra=2)

class FNTaskCreate(CreateView):
    model = Task
    form_class = FNTaskForm
    template_name = 'fntasks.html'

    def get_context_data(self, **kwargs):
            context = super(FNTaskCreate, self).get_context_data(**kwargs)
            context['formset'] = TaskFormSet(queryset=Task.objects.none()) # providing none
            return context

<form method="post">
{% csrf_token %}
<table class="table link-formset">
{% for form in formset %}
{% if forloop.first %}
<thead>
  <tr>
    {% for field in form.visible_fields %}
    <th>{{ field.label }}</th>
    {% endfor %}
  </tr>
</thead>
{% endif %}
<tr class="{% cycle row1 row2 %} formset_row">
  {% for field in form.visible_fields %}
  <td>
    {# Include the hidden fields in the form #}
    {% if forloop.first %}
    {% for hidden in form.hidden_fields %}
    {{ hidden }}
    {% endfor %}
    {% endif %}
    {{ field.errors.as_ul }}
    {{ field }}
  </td>
{% endfor %}
</tr>
{% endfor %}
<a class="btn btn-default" href="{% url 'clients' %}">Cancel</a>
<input type="submit" value="Next" class="btn btn-primary" />
</form>

def __init__(self, *args, **kwargs):
    clientlist = kwargs.pop('clientlist', None)
    super().__init__(*args, **kwargs)
    print(clientlist)

url(r'^tasks/create/(?P<clientlist>d+)/$',views.FNTaskCreate.as_view(),name='fntask_create'),