diff --git a/sfdx-source/apex-extensions/main/default/classes/domains/fflib_SObjects2.cls b/sfdx-source/apex-extensions/main/default/classes/domains/fflib_SObjects2.cls
index 85255f5..f2c993c 100644
--- a/sfdx-source/apex-extensions/main/default/classes/domains/fflib_SObjects2.cls
+++ b/sfdx-source/apex-extensions/main/default/classes/domains/fflib_SObjects2.cls
@@ -249,6 +249,22 @@ public virtual class fflib_SObjects2
 				.getDateTimeFieldValues(sObjectField);
 	}
 
+	/**
+	 * @param sObjectField The Schema.SObjectField to get the SUM of
+	 *
+	 * @return The total SUM of the given field
+	 */
+	@TestVisible
+	protected virtual Decimal getDecimalFieldSum(Schema.SObjectField sObjectField)
+	{
+		Decimal result = 0;
+		for (SObject record : getRecords())
+		{
+			result += record.get(sObjectField) == null ? 0 : (Decimal) record.get(sObjectField);
+		}
+		return result;
+	}
+
 	/**
 	 * @param sObjectField The Schema.SObjectField to get their Id values
 	 *
diff --git a/sfdx-source/apex-extensions/tests/classes/domains/fflib_SObjects2Test.cls b/sfdx-source/apex-extensions/tests/classes/domains/fflib_SObjects2Test.cls
index ba74a28..8ae2b1c 100644
--- a/sfdx-source/apex-extensions/tests/classes/domains/fflib_SObjects2Test.cls
+++ b/sfdx-source/apex-extensions/tests/classes/domains/fflib_SObjects2Test.cls
@@ -319,15 +319,23 @@ private class fflib_SObjects2Test
 		System.assert(domain.selectByRating('Hot').size() == 1);
 	}
 
+	@IsTest
+	static void itShouldGetTheSumOfAnnualRevenue()
+	{
+		DomainAccounts domain = generateDomain();
+		System.assert(domain.getDecimalFieldSum(Account.AnnualRevenue) == 11);
+		System.assert(domain.getDecimalFieldValues(Account.AnnualRevenue).contains((Decimal) 5));
+	}
+
 	private static DomainAccounts generateDomain()
 	{
 		DomainAccounts domain = new DomainAccounts(
 				new List<Account>
 				{
-						new Account(Name = 'A', ShippingCountry = 'USA'),
-						new Account(Name = 'B', ShippingCountry = 'Ireland'),
-						new Account(Name = 'C', ShippingCountry = 'UK'),
-						new Account(Name = 'D', ShippingCountry = ''),
+						new Account(Name = 'A', ShippingCountry = 'USA', AnnualRevenue = 5),
+						new Account(Name = 'B', ShippingCountry = 'Ireland', AnnualRevenue = 3),
+						new Account(Name = 'C', ShippingCountry = 'UK', AnnualRevenue = 2),
+						new Account(Name = 'D', ShippingCountry = '', AnnualRevenue = 1),
 						new Account(Name = 'E'),
 						new Account()
 				}