diff --git a/include/ureact/detail/transaction.inl b/include/ureact/detail/transaction.inl
new file mode 100644
index 0000000..5f530e0
--- /dev/null
+++ b/include/ureact/detail/transaction.inl
@@ -0,0 +1,60 @@
+//
+//         Copyright (C) 2014-2017 Sebastian Jeckel.
+//         Copyright (C) 2020-2023 Krylov Yaroslav.
+//
+// Distributed under the Boost Software License, Version 1.0.
+//    (See accompanying file LICENSE_1_0.txt or copy at
+//          http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#ifndef UREACT_DETAIL_TRANSACTION_INL
+#define UREACT_DETAIL_TRANSACTION_INL
+
+#include <cassert>
+
+#include <ureact/context.hpp>
+#include <ureact/detail/defines.hpp>
+#include <ureact/detail/graph_impl.hpp>
+
+UREACT_BEGIN_NAMESPACE
+
+UREACT_FUNC transaction::transaction( context ctx )
+    : m_context( std::move( ctx ) )
+{
+    auto& graph = get_internals( m_context ).get_graph();
+    assert( !graph.is_propagation_in_progress()
+            && "Can't start transaction in the middle of the change propagation process" );
+    graph.start_transaction();
+}
+
+UREACT_FUNC transaction::~transaction()
+{
+    finish_impl();
+}
+
+UREACT_FUNC void transaction::finish()
+{
+    finish_impl();
+}
+
+UREACT_FUNC void transaction::finish_impl()
+{
+    if( !m_finished )
+    {
+        get_internals( m_context ).get_graph().finish_transaction();
+        m_finished = true;
+    }
+}
+
+namespace default_context
+{
+
+UREACT_FUNC default_transaction::default_transaction()
+    : transaction( default_context::get() )
+{}
+
+} // namespace default_context
+
+UREACT_END_NAMESPACE
+
+#endif //UREACT_DETAIL_TRANSACTION_INL
diff --git a/include/ureact/transaction.hpp b/include/ureact/transaction.hpp
index 93290a3..6cacd6d 100644
--- a/include/ureact/transaction.hpp
+++ b/include/ureact/transaction.hpp
@@ -12,48 +12,25 @@
 
 #include <ureact/context.hpp>
 #include <ureact/detail/defines.hpp>
-#include <ureact/detail/graph_impl.hpp>
 
 UREACT_BEGIN_NAMESPACE
 
 /*!
  * @brief Guard class to perform several changes atomically
- *
  */
 class UREACT_WARN_UNUSED_RESULT transaction
 {
 public:
-    explicit transaction( context ctx )
-        : m_context( std::move( ctx ) )
-    {
-        auto& graph = get_internals( m_context ).get_graph();
-        assert( !graph.is_propagation_in_progress()
-                && "Can't start transaction in the middle of the change propagation process" );
-        graph.start_transaction();
-    }
-
-    ~transaction()
-    {
-        finish_impl();
-    }
+    explicit transaction( context ctx );
+    ~transaction();
 
     /*!
      * @brief Finish transaction before code scope is ended
      */
-    void finish()
-    {
-        finish_impl();
-    }
+    void finish();
 
 private:
-    void finish_impl()
-    {
-        if( !m_finished )
-        {
-            get_internals( m_context ).get_graph().finish_transaction();
-            m_finished = true;
-        }
-    }
+    void finish_impl();
 
     UREACT_MAKE_NONCOPYABLE( transaction );
     UREACT_MAKE_NONMOVABLE( transaction );
@@ -71,15 +48,17 @@ namespace default_context
  * Named differently from "transaction", so it is possible to use them both,
  * where both ureact and ureact::default_context namespaces are used
  */
-struct UREACT_WARN_UNUSED_RESULT default_transaction : ureact::transaction
+struct UREACT_WARN_UNUSED_RESULT default_transaction : public transaction
 {
-    default_transaction()
-        : ureact::transaction( default_context::get() )
-    {}
+    default_transaction();
 };
 
 } // namespace default_context
 
 UREACT_END_NAMESPACE
 
+#if UREACT_HEADER_ONLY
+#    include <ureact/detail/transaction.inl>
+#endif
+
 #endif // UREACT_TRANSACTION_HPP