diff --git a/api/src/reportcreator_api/tests/test_rendering.py b/api/src/reportcreator_api/tests/test_rendering.py
index aa8548082..811cc87bd 100644
--- a/api/src/reportcreator_api/tests/test_rendering.py
+++ b/api/src/reportcreator_api/tests/test_rendering.py
@@ -80,6 +80,8 @@ def extract_html_part(self, html, start=None, end=None):
         ("{{ formatDate('2022-09-21', 'long', 'en-US') }}", "September 21, 2022"),
         ("{{ formatDate('2022-09-21', 'full', 'en-US') }}", "Wednesday, September 21, 2022"),
         ("{{ formatDate('2022-09-21', {year: '2-digit', month: 'narrow', day: '2-digit', numberingSystem: 'latn'}, 'en-US') }}", "S 21, 22"),
+        ("""<div :set="helperFunction = function () { return report.title + ' function'; }">{{ helperFunction() }}</div>""", lambda self: f"<div set=\"function () {{ return report.title + ' function'; }}\">{self.project.data['title']} function</div>"),
+        ("""<div :set="computedVar = computed(() => report.title + ' computed')">{{ computedVar.value }}</div>""", lambda self: f"<div set=\"[object Object]\">{self.project.data['title']} computed</div>"),
     ])
     def test_variables_rendering(self, template, html):
         if callable(html):
diff --git a/docs/docs/designer/formatting-utils.md b/docs/docs/designer/formatting-utils.md
index 707ecb205..3b792f2ce 100755
--- a/docs/docs/designer/formatting-utils.md
+++ b/docs/docs/designer/formatting-utils.md
@@ -76,4 +76,31 @@ English (default): <comma-and-join>...</comma-and-join>
 English (no commas, always "and"): <comma-and-join comma=" and " and=" and ">...</comma-and-join>
 German: <comma-and-join and=" und ">...</comma-and-join>
 French: <comma-and-join and=" et ">...</comma-and-join>
-```
\ No newline at end of file
+```
+
+
+## Helper Functions
+It is possible to define helper functions and variables inside the Vue template language to reuse logic.
+Setting variables only works for native DOM tag (e.g. `<div>`, `<span>`, etc.), but not for Vue components (e.g. `<template>`, `<table-of-contents>`, etc.).
+The name of the `:set` attributes does not matter, but they have to be unique per tag.
+Helper functions are defined at the start of the template, they can be used by following template elements.
+
+```html
+<div 
+  v-show="false" 
+  :set1="helperFunction1 = function() {
+    return report.title + ' processed by helper function';
+  }"
+  :set3="calculateCustomScore = (finding) => finding.exploitability * finding.impact"
+  :set2="computedProperty = computed(() => report.title + ' processed by computed property')"
+  
+/>
+<div>
+  Call helper function (without arguments): {{ helperFunction() }}<br>
+  Call helper function (with arguments): {{ calculateCustomScore(report.findings[0]) }}<br>
+  Use computed property: {{ computedProperty.value }}<br>
+</div>
+```
+
+Note that defining variables and helper functions is not officially supported by the Vue template language, but rather a workaround.
+For more details see: https://stackoverflow.com/questions/43999618/how-to-define-a-temporary-variable-in-vue-js-template
diff --git a/rendering/src/main.js b/rendering/src/main.js
index d6db506d9..3da10960c 100644
--- a/rendering/src/main.js
+++ b/rendering/src/main.js
@@ -1,4 +1,4 @@
-import { createApp, compile, nextTick } from 'vue';
+import { createApp, compile, computed, ref } from 'vue';
 import { generateCodeFrame } from '@vue/shared';
 import ChartJsPluginDataLabels from 'chartjs-plugin-datalabels';
 import Pagebreak from './components/Pagebreak.vue';
@@ -13,7 +13,6 @@ import Ref from './components/Ref.vue';
 import { callForTicks } from './utils';
 import lodash from 'lodash';
 
-
 // injected as global variables
 const REPORT_TEMPLATE = '<div>' + (window.REPORT_TEMPLATE || '') + '</div>';
 const REPORT_DATA = window.REPORT_DATA || { report: {}, findings: [] };
@@ -59,20 +58,15 @@ const DEFAULT_COMPUTED = {
       count_info: this.findings_info.length,
     };
   },
-  lodash() {
-    return lodash;
-  },
   chartjsPlugins() {
     return {
       DataLabels: ChartJsPluginDataLabels
     };
   },
-  window() {
-    return window;
-  },
-  document() {
-    return document;
-  },
+  lodash: () => lodash,
+  window: () => window,
+  document: () => document,
+  computed: () => computed,
 };
 
 const DEFAULT_METHODS = {
@@ -144,6 +138,8 @@ if (!window.RENDERING_COMPLETED) {
     data: () => ({
       data: REPORT_DATA,
       _tickCount: 0,
+      _pendingPromises: [],
+      _observer: null,
     }),
     computed: {
       ...DEFAULT_COMPUTED,
@@ -153,12 +149,43 @@ if (!window.RENDERING_COMPLETED) {
       ...DEFAULT_METHODS,
       ...REPORT_METHODS,
     },
+    created() {
+      this._observer = new MutationObserver((mutationList) => {
+        for (const mutation of mutationList) {
+          if (mutation.type === 'childList') {
+            for (const node of mutation.addedNodes) {
+              if (node.nodeType === Node.ELEMENT_NODE && node.nodeName === 'SCRIPT') {
+                this._pendingPromises.push(new Promise((resolve, reject) => {
+                  node.addEventListener('load', resolve);
+                  node.addEventListener('error', reject);
+                }));
+              }
+            }
+          }
+        }
+      });
+      this._observer.observe(document, { childList: true, subtree: true });
+    },
+    beforeUnmount() {
+      this._observer.disconnect();
+    },
     async mounted() {
-      // Wait some ticks before rendering is signaled as completed
-      // Allow multi-pass rendering (for e.g. table of contents)
-      await callForTicks(10, nextTick, () => {
-        this._tickCount += 1;
-      })
+      const waitUntilFinished = async () => {
+        // Wait some ticks before rendering is signaled as completed
+        // Allow multi-pass rendering (for e.g. table of contents)
+        await callForTicks(10, () => {
+          this._tickCount += 1;
+        });
+        // Wait for pending promises to finish
+        if (this._pendingPromises.length > 0) {
+          await Promise.allSettled(this._pendingPromises);
+          await callForTicks(10, () => {
+            this._tickCount += 1;
+          });
+        }
+      }
+      await waitUntilFinished();
+
       window.RENDERING_COMPLETED = true;
     },
   });