diff --git a/app/models/budget/investment.rb b/app/models/budget/investment.rb
index 99e0eb25a..4bfd038c3 100644
--- a/app/models/budget/investment.rb
+++ b/app/models/budget/investment.rb
@@ -25,6 +25,7 @@ class Budget
     validates :description, presence: true
     validates :heading_id, presence: true
     validates_presence_of :unfeasibility_explanation, if: :unfeasibility_explanation_required?
+    validates_presence_of :price, if: :price_required?
 
     validates :title, length: { in: 4..Budget::Investment.title_max_length }
     validates :description, length: { maximum: Budget::Investment.description_max_length }
@@ -136,6 +137,10 @@ class Budget
       unfeasible? && valuation_finished?
     end
 
+    def price_required?
+      feasible? && valuation_finished?
+    end
+
     def unfeasible_email_pending?
       unfeasible_email_sent_at.blank? && unfeasible? && valuation_finished?
     end
diff --git a/spec/models/budget/investment_spec.rb b/spec/models/budget/investment_spec.rb
index 3ab97c574..fa51f3cab 100644
--- a/spec/models/budget/investment_spec.rb
+++ b/spec/models/budget/investment_spec.rb
@@ -54,7 +54,7 @@ describe Budget::Investment do
     expect(investment.group_id).to eq group_2.id
   end
 
-  describe "#unfeasibility_explanation" do
+  describe "#unfeasibility_explanation blank" do
     it "should be valid if valuation not finished" do
       investment.unfeasibility_explanation = ""
       investment.valuation_finished = false
@@ -76,6 +76,29 @@ describe Budget::Investment do
     end
   end
 
+  describe "#price blank" do
+    it "should be valid if valuation not finished" do
+      investment.price = ""
+      investment.valuation_finished = false
+      expect(investment).to be_valid
+    end
+
+    it "should be valid if valuation finished and unfeasible" do
+      investment.price = ""
+      investment.unfeasibility_explanation = "reason"
+      investment.feasibility = "unfeasible"
+      investment.valuation_finished = true
+      expect(investment).to be_valid
+    end
+
+    it "should not be valid if valuation finished and feasible" do
+      investment.price = ""
+      investment.feasibility = "feasible"
+      investment.valuation_finished = true
+      expect(investment).to_not be_valid
+    end
+  end
+
   describe "#code" do
     let(:investment) { create(:budget_investment) }