diff --git a/AsyncPoco/AsyncPoco.cs b/AsyncPoco/AsyncPoco.cs
index 208ba1e5..37668133 100644
--- a/AsyncPoco/AsyncPoco.cs
+++ b/AsyncPoco/AsyncPoco.cs
@@ -237,9 +237,9 @@ public IDbConnection Connection
 		/// Transactions can be nested but they must all be completed otherwise the entire
 		/// transaction is aborted.
 		/// </remarks>
-		public Task<ITransaction> GetTransactionAsync()
+		public Task<ITransaction> GetTransactionAsync(IsolationLevel iso = IsolationLevel.ReadCommitted)
 		{
-			return Transaction.BeginAsync(this);
+			return Transaction.BeginAsync(this, iso);
 		}
 
 		/// <summary>
@@ -260,14 +260,14 @@ public virtual void OnEndTransaction()
 		/// <summary>
 		/// Starts a transaction scope, see GetTransaction() for recommended usage
 		/// </summary>
-		public virtual async Task BeginTransactionAsync()
+		public virtual async Task BeginTransactionAsync(IsolationLevel iso = IsolationLevel.ReadCommitted)
 		{
 			_transactionDepth++;
 
 			if (_transactionDepth == 1)
 			{
 				await OpenSharedConnectionAsync();
-				_transaction = _sharedConnection.BeginTransaction();
+				_transaction = _sharedConnection.BeginTransaction(iso);
 				_transactionCancelled = false;
 				OnBeginTransaction();
 			}
@@ -3260,10 +3260,10 @@ public interface ITransaction : IDisposable
 	/// </summary>
 	public class Transaction : ITransaction
 	{
-		public static async Task<ITransaction> BeginAsync(Database db) 
+		public static async Task<ITransaction> BeginAsync(Database db, IsolationLevel iso = IsolationLevel.ReadCommitted) 
 		{
 			var trans = new Transaction(db);
-			await db.BeginTransactionAsync();
+			await db.BeginTransactionAsync(iso);
 			return trans;
 		}
 
diff --git a/AsyncPoco/Core/Transaction.cs b/AsyncPoco/Core/Transaction.cs
index c45d7a59..936d9064 100644
--- a/AsyncPoco/Core/Transaction.cs
+++ b/AsyncPoco/Core/Transaction.cs
@@ -1,8 +1,9 @@
 // AsyncPoco is a fork of PetaPoco and is bound by the same licensing terms.
 // PetaPoco - A Tiny ORMish thing for your POCO's.
 // Copyright © 2011-2012 Topten Software.  All Rights Reserved.
- 
+
 using System;
+using System.Data;
 using System.Threading.Tasks;
 
 namespace AsyncPoco
@@ -17,10 +18,10 @@ public interface ITransaction : IDisposable
 	/// </summary>
 	public class Transaction : ITransaction
 	{
-		public static async Task<ITransaction> BeginAsync(Database db) 
+        public static async Task<ITransaction> BeginAsync(Database db, IsolationLevel iso = IsolationLevel.ReadCommitted) 
 		{
 			var trans = new Transaction(db);
-			await db.BeginTransactionAsync();
+			await db.BeginTransactionAsync(iso);
 			return trans;
 		}
 
@@ -43,4 +44,4 @@ public void Dispose()
 
 		Database _db;
 	}
-}
+}
\ No newline at end of file
diff --git a/AsyncPoco/Database.cs b/AsyncPoco/Database.cs
index 317a1db4..aa0365ca 100644
--- a/AsyncPoco/Database.cs
+++ b/AsyncPoco/Database.cs
@@ -229,9 +229,9 @@ public IDbConnection Connection
 		/// Transactions can be nested but they must all be completed otherwise the entire
 		/// transaction is aborted.
 		/// </remarks>
-		public Task<ITransaction> GetTransactionAsync()
+		public Task<ITransaction> GetTransactionAsync(IsolationLevel iso = IsolationLevel.ReadCommitted)
 		{
-			return Transaction.BeginAsync(this);
+			return Transaction.BeginAsync(this, iso);
 		}
 
 		/// <summary>
@@ -252,14 +252,14 @@ public virtual void OnEndTransaction()
 		/// <summary>
 		/// Starts a transaction scope, see GetTransaction() for recommended usage
 		/// </summary>
-		public virtual async Task BeginTransactionAsync()
+		public virtual async Task BeginTransactionAsync(IsolationLevel iso = IsolationLevel.ReadCommitted)
 		{
 			_transactionDepth++;
 
 			if (_transactionDepth == 1)
 			{
 				await OpenSharedConnectionAsync();
-				_transaction = _sharedConnection.BeginTransaction();
+                _transaction = _sharedConnection.BeginTransaction(iso);
 				_transactionCancelled = false;
 				OnBeginTransaction();
 			}