diff --git a/nummi/main/forms.py b/nummi/main/forms.py
index aff90df..5c47fb3 100644
--- a/nummi/main/forms.py
+++ b/nummi/main/forms.py
@@ -53,9 +53,12 @@ class TransactionForm(NummiForm):
 
     def __init__(self, *args, **kwargs):
         _user = kwargs.get("user")
+        _disable_snapshot = kwargs.pop("disable_snapshot", False)
         super().__init__(*args, **kwargs)
         self.fields["category"].queryset = Category.objects.filter(user=_user)
         self.fields["snapshot"].queryset = Snapshot.objects.filter(user=_user)
+        if _disable_snapshot:
+            self.fields["snapshot"].disabled = True
 
 
 class InvoiceForm(NummiForm):
@@ -82,6 +85,7 @@ class SnapshotForm(NummiForm):
 
     def __init__(self, *args, **kwargs):
         _user = kwargs.get("user")
+        _disable_account = kwargs.pop("disable_account", False)
         super().__init__(*args, **kwargs)
         self.fields["account"].queryset = Account.objects.filter(user=_user)
         self.fields["transactions"] = forms.MultipleChoiceField(
@@ -92,6 +96,8 @@ class SnapshotForm(NummiForm):
             label=_("Add transactions"),
             required=False,
         )
+        if _disable_account:
+            self.fields["account"].disabled = True
 
     def save(self, *args, **kwargs):
         instance = super().save(*args, **kwargs)
diff --git a/nummi/main/views.py b/nummi/main/views.py
index 2806b42..56cbec7 100644
--- a/nummi/main/views.py
+++ b/nummi/main/views.py
@@ -62,15 +62,13 @@ class UserMixin(LoginRequiredMixin):
     def get_queryset(self, **kwargs):
         return super().get_queryset().filter(user=self.request.user)
 
-
-class UserFormMixin:
     def get_form_kwargs(self):
         return super().get_form_kwargs() | {
             "user": self.request.user,
         }
 
 
-class NummiCreateView(UserMixin, UserFormMixin, CreateView):
+class NummiCreateView(UserMixin, CreateView):
     def form_valid(self, form):
         form.instance.user = self.request.user
         self.next = form.data.get("next", None)
@@ -80,7 +78,7 @@ class NummiCreateView(UserMixin, UserFormMixin, CreateView):
         return self.next or super().get_success_url()
 
 
-class NummiUpdateView(UserMixin, UserFormMixin, UpdateView):
+class NummiUpdateView(UserMixin, UpdateView):
     pass
 
 
@@ -117,6 +115,11 @@ class TransactionCreateView(NummiCreateView):
             self.snapshot = _queryset.first()
         return {"snapshot": self.snapshot}
 
+    def get_form_kwargs(self):
+        if "snapshot" in self.kwargs:
+            return super().get_form_kwargs() | {"disable_snapshot": True}
+        return super().get_form_kwargs()
+
     def get_context_data(self, **kwargs):
         if "snapshot" in self.kwargs:
             return super().get_context_data(**kwargs) | {"snapshot": self.snapshot}
@@ -158,6 +161,11 @@ class SnapshotCreateView(NummiCreateView):
             self.account = _queryset.first()
         return {"account": self.account}
 
+    def get_form_kwargs(self):
+        if "account" in self.kwargs:
+            return super().get_form_kwargs() | {"disable_account": True}
+        return super().get_form_kwargs()
+
     def get_context_data(self, **kwargs):
         if "account" in self.kwargs:
             return super().get_context_data(**kwargs) | {"account": self.account}