diff --git a/app/models/validations/shared_validations.rb b/app/models/validations/shared_validations.rb
index da79599ee..7b0ecc420 100644
--- a/app/models/validations/shared_validations.rb
+++ b/app/models/validations/shared_validations.rb
@@ -54,14 +54,15 @@ module Validations::SharedValidations
       field = question.check_answer_label || question.id
       incorrect_accuracy = (value.to_d * 100) % (question.step * 100) != 0
 
-      if question.step < 1 && incorrect_accuracy
-        record.errors.add question.id.to_sym, I18n.t("validations.shared.numeric.nearest_hundredth", field:)
-      elsif incorrect_accuracy || value.to_d != value.to_i    # if the user enters a value in exponent notation (eg '4e1') the to_i method does not convert this to the correct value
-        field = question.check_answer_label || question.id
-        case question.step
-        when 1 then record.errors.add question.id.to_sym, :not_integer, message: I18n.t("validations.shared.numeric.whole_number", field:)
-        when 10 then record.errors.add question.id.to_sym, I18n.t("validations.shared.numeric.nearest_ten", field:)
-        end
+      next unless incorrect_accuracy
+
+      case question.step
+      when 0.01 then record.errors.add question.id.to_sym, I18n.t("validations.shared.numeric.nearest_hundredth", field:)
+      when 0.1 then record.errors.add question.id.to_sym, I18n.t("validations.shared.numeric.nearest_tenth", field:)
+      when 1 then record.errors.add question.id.to_sym, :not_integer, message: I18n.t("validations.shared.numeric.whole_number", field:)
+      when 10 then record.errors.add question.id.to_sym, I18n.t("validations.shared.numeric.nearest_ten", field:)
+      else
+        record.errors.add question.id.to_sym, I18n.t("validations.shared.numeric.nearest_step", field:, step: question.step)
       end
     end
   end
diff --git a/config/locales/validations/shared.en.yml b/config/locales/validations/shared.en.yml
index a29d2bd74..ea06636dc 100644
--- a/config/locales/validations/shared.en.yml
+++ b/config/locales/validations/shared.en.yml
@@ -9,7 +9,9 @@ en:
         above_min: "%{field} must be at least %{min}."
         whole_number: "%{field} must be a whole number."
         nearest_ten: "%{field} must be given to the nearest ten."
+        nearest_tenth: "%{field} must be given to the nearest tenth."
         nearest_hundredth: "%{field} must be given to the nearest hundredth."
+        nearest_step: "${field} must be given to the nearest %{step}."
         normal_format: "Enter a number."
         format: "%{field} must be a number."
 
diff --git a/spec/models/validations/shared_validations_spec.rb b/spec/models/validations/shared_validations_spec.rb
index 53efc6675..a8475607c 100644
--- a/spec/models/validations/shared_validations_spec.rb
+++ b/spec/models/validations/shared_validations_spec.rb
@@ -123,12 +123,6 @@ RSpec.describe Validations::SharedValidations do
         expect(sales_log.errors[:income1]).to include I18n.t("validations.shared.numeric.whole_number", field: "Buyer 1’s gross annual income")
       end
 
-      it "adds an error if the user attempts to input a number in exponent format" do
-        sales_log.income1 = "3e5"
-        shared_validator.validate_numeric_step(sales_log)
-        expect(sales_log.errors[:income1]).to include I18n.t("validations.shared.numeric.whole_number", field: "Buyer 1’s gross annual income")
-      end
-
       it "does not add an error if input is an integer" do
         sales_log.income1 = 30_000
         shared_validator.validate_numeric_step(sales_log)
@@ -144,13 +138,6 @@ RSpec.describe Validations::SharedValidations do
         expect(sales_log.errors[:savings]).to include I18n.t("validations.shared.numeric.nearest_ten", field: "Buyers’ total savings before any deposit paid")
       end
 
-      it "adds an error if the user attempts to input a number in exponent format" do
-        sales_log.savings = "3e5"
-        sales_log.jointpur = 1
-        shared_validator.validate_numeric_step(sales_log)
-        expect(sales_log.errors[:savings]).to include I18n.t("validations.shared.numeric.nearest_ten", field: "Buyers’ total savings before any deposit paid")
-      end
-
       it "does not add an error if input is a multiple of ten" do
         sales_log.savings = 30_000
         shared_validator.validate_numeric_step(sales_log)
@@ -165,12 +152,6 @@ RSpec.describe Validations::SharedValidations do
         expect(sales_log.errors[:mscharge]).to include I18n.t("validations.shared.numeric.nearest_hundredth", field: "Monthly leasehold charges")
       end
 
-      it "does not add an error if the user attempts to input a number in exponent format" do
-        sales_log.mscharge = "3e1"
-        shared_validator.validate_numeric_step(sales_log)
-        expect(sales_log.errors).to be_empty
-      end
-
       it "does not add an error if input has 2 or fewer decimal places" do
         sales_log.mscharge = 30.74
         shared_validator.validate_numeric_step(sales_log)
@@ -229,6 +210,12 @@ RSpec.describe Validations::SharedValidations do
       expect(sales_log.errors[:income1]).to include I18n.t("validations.shared.numeric.format", field: "Buyer 1’s gross annual income")
     end
 
+    it "does not allow exponent format" do
+      sales_log.income1 = "1e4"
+      shared_validator.validate_numeric_input(sales_log)
+      expect(sales_log.errors[:income1]).to include I18n.t("validations.shared.numeric.format", field: "Buyer 1’s gross annual income")
+    end
+
     it "allows a digit" do
       sales_log.income1 = "300"
       shared_validator.validate_numeric_input(sales_log)