diff --git a/app/models/abilities/common.rb b/app/models/abilities/common.rb
index 6dd36d5b0..ed2c3d4a0 100644
--- a/app/models/abilities/common.rb
+++ b/app/models/abilities/common.rb
@@ -19,6 +19,7 @@ module Abilities
       can [:retire_form, :retire], Proposal, author_id: user.id
 
       can :read, SpendingProposal
+      can :read, Budget::Investment
 
       can :create, Comment
       can :create, Debate
@@ -46,6 +47,9 @@ module Abilities
         can :vote_featured, Proposal
         can :vote, SpendingProposal
         can :create, SpendingProposal
+        can :create, Budget::Investment, budget: { phase: "accepting" }
+        can :vote,   Budget::Investment, budget: { phase: "selecting" }
+        can :ballot, Budget::Investment, budget: { phase: "balloting" }
       end
 
       can :create, Annotation
diff --git a/spec/models/abilities/common_spec.rb b/spec/models/abilities/common_spec.rb
index 468173797..36b4b49f6 100644
--- a/spec/models/abilities/common_spec.rb
+++ b/spec/models/abilities/common_spec.rb
@@ -9,6 +9,9 @@ describe "Abilities::Common" do
   let(:debate) { create(:debate) }
   let(:comment) { create(:comment) }
   let(:proposal) { create(:proposal) }
+  let(:investment_in_accepting_budget) { create(:budget_investment, budget: create(:budget, phase: 'accepting')) }
+  let(:investment_in_selecting_budget) { create(:budget_investment, budget: create(:budget, phase: 'selecting')) }
+  let(:investment_in_balloting_budget) { create(:budget_investment, budget: create(:budget, phase: 'balloting')) }
   let(:own_debate) { create(:debate, author: user) }
   let(:own_comment) { create(:comment, author: user) }
   let(:own_proposal) { create(:proposal, author: user) }
@@ -93,6 +96,19 @@ describe "Abilities::Common" do
     it { should be_able_to(:create, SpendingProposal) }
     it { should_not be_able_to(:destroy, create(:spending_proposal)) }
     it { should_not be_able_to(:destroy, own_spending_proposal) }
+
+    it { should be_able_to(:create, investment_in_accepting_budget) }
+    it { should_not be_able_to(:create, investment_in_selecting_budget) }
+    it { should_not be_able_to(:create, investment_in_balloting_budget) }
+
+    it { should_not be_able_to(:vote, investment_in_accepting_budget) }
+    it { should be_able_to(:vote, investment_in_selecting_budget) }
+    it { should_not be_able_to(:vote, investment_in_balloting_budget) }
+
+    it { should_not be_able_to(:ballot, investment_in_accepting_budget) }
+    it { should_not be_able_to(:ballot, investment_in_selecting_budget) }
+    it { should be_able_to(:ballot, investment_in_balloting_budget) }
+
   end
 
   describe "when level 3 verified" do