diff --git a/app/models/sales_log.rb b/app/models/sales_log.rb
index 3f17ff1be..24dbea376 100644
--- a/app/models/sales_log.rb
+++ b/app/models/sales_log.rb
@@ -11,6 +11,7 @@ end
 
 class SalesLog < Log
   include DerivedVariables::SalesLogVariables
+  include Validations::Sales::SoftValidations
 
   self.inheritance_column = :_type_disabled
 
@@ -102,8 +103,4 @@ class SalesLog < Log
   def london_property?
     la && LONDON_BOROUGHS.include?(la)
   end
-
-  def income1_under_soft_min?
-    true
-  end
 end
diff --git a/app/models/validations/sales/soft_validations.rb b/app/models/validations/sales/soft_validations.rb
new file mode 100644
index 000000000..5d3dce615
--- /dev/null
+++ b/app/models/validations/sales/soft_validations.rb
@@ -0,0 +1,15 @@
+module Validations::Sales::SoftValidations
+  ALLOWED_INCOME_RANGES = {
+    1 => OpenStruct.new(soft_min: 5000),
+    2 => OpenStruct.new(soft_min: 1500),
+    3 => OpenStruct.new(soft_min: 1000),
+    5 => OpenStruct.new(soft_min: 2000),
+    0 => OpenStruct.new(soft_min: 2000),
+  }.freeze
+
+  def income1_under_soft_min?
+    return false unless ecstat1 && income1 && ALLOWED_INCOME_RANGES[ecstat1]
+
+    income1 < ALLOWED_INCOME_RANGES[ecstat1][:soft_min]
+  end
+end
diff --git a/spec/models/validations/sales/soft_validations_spec.rb b/spec/models/validations/sales/soft_validations_spec.rb
new file mode 100644
index 000000000..f9cac3d47
--- /dev/null
+++ b/spec/models/validations/sales/soft_validations_spec.rb
@@ -0,0 +1,89 @@
+require "rails_helper"
+
+RSpec.describe Validations::Sales::SoftValidations do
+  let(:record) { FactoryBot.create(:sales_log) }
+
+  describe "income1 min validations" do
+    context "when validating soft min" do
+      it "returns false if no income1 is given" do
+        record.income1 = nil
+        expect(record)
+          .not_to be_income1_under_soft_min
+      end
+
+      it "returns false if no ecstat1 is given" do
+        record.ecstat1 = nil
+        expect(record)
+          .not_to be_income1_under_soft_min
+      end
+
+      [
+        {
+          income1: 4500,
+          ecstat1: 1,
+        },
+        {
+          income1: 1400,
+          ecstat1: 2,
+        },
+        {
+          income1: 999,
+          ecstat1: 3,
+        },
+        {
+          income1: 1899,
+          ecstat1: 5,
+        },
+        {
+          income1: 1888,
+          ecstat1: 0,
+        },
+      ].each do |test_case|
+        it "returns true if income1 is below soft min for ecstat1 #{test_case[:ecstat1]}" do
+          record.income1 = test_case[:income1]
+          record.ecstat1 = test_case[:ecstat1]
+          expect(record)
+            .to be_income1_under_soft_min
+        end
+      end
+
+      [
+        {
+          income1: 5001,
+          ecstat1: 1,
+        },
+        {
+          income1: 1600,
+          ecstat1: 2,
+        },
+        {
+          income1: 1004,
+          ecstat1: 3,
+        },
+        {
+          income1: 2899,
+          ecstat1: 4,
+        },
+        {
+          income1: 2899,
+          ecstat1: 5,
+        },
+        {
+          income1: 5,
+          ecstat1: 6,
+        },
+        {
+          income1: 10_888,
+          ecstat1: 0,
+        },
+      ].each do |test_case|
+        it "returns false if income1 is over soft min for ecstat1 #{test_case[:ecstat1]}" do
+          record.income1 = test_case[:income1]
+          record.ecstat1 = test_case[:ecstat1]
+          expect(record)
+            .not_to be_income1_under_soft_min
+        end
+      end
+    end
+  end
+end