diff --git a/src/config/ConfigManager.cpp b/src/config/ConfigManager.cpp
index 735d9703..025be9f7 100644
--- a/src/config/ConfigManager.cpp
+++ b/src/config/ConfigManager.cpp
@@ -1434,6 +1434,7 @@ std::vector<SP<CWindowRule>> CConfigManager::getMatchingRules(PHLWINDOW pWindow,
     // since some rules will be applied later, we need to store some flags
     bool hasFloating   = pWindow->m_isFloating;
     bool hasFullscreen = pWindow->isFullscreen();
+    bool isGrouped     = pWindow->m_groupData.pNextWindow;
 
     // local tags for dynamic tag rule match
     auto tags = pWindow->m_tags;
@@ -1482,6 +1483,11 @@ std::vector<SP<CWindowRule>> CConfigManager::getMatchingRules(PHLWINDOW pWindow,
                         continue;
                 }
 
+                if (rule->m_group != -1) {
+                    if (rule->m_group != isGrouped)
+                        continue;
+                }
+
                 if (!rule->m_fullscreenState.empty()) {
                     const auto ARGS = CVarList(rule->m_fullscreenState, 2, ' ');
                     //
@@ -2576,6 +2582,7 @@ std::optional<std::string> CConfigManager::handleWindowRule(const std::string& c
     const auto ONWORKSPACEPOS     = VALUE.find("onworkspace:");
     const auto CONTENTTYPEPOS     = VALUE.find("content:");
     const auto XDGTAGPOS          = VALUE.find("xdgTag:");
+    const auto GROUPPOS           = VALUE.find("group:");
 
     // find workspacepos that isn't onworkspacepos
     size_t WORKSPACEPOS = std::string::npos;
@@ -2588,8 +2595,8 @@ std::optional<std::string> CConfigManager::handleWindowRule(const std::string& c
         currentPos = VALUE.find("workspace:", currentPos + 1);
     }
 
-    const auto checkPos = std::unordered_set{TAGPOS,    TITLEPOS,           CLASSPOS,     INITIALTITLEPOS, INITIALCLASSPOS, X11POS,         FLOATPOS, FULLSCREENPOS,
-                                             PINNEDPOS, FULLSCREENSTATEPOS, WORKSPACEPOS, FOCUSPOS,        ONWORKSPACEPOS,  CONTENTTYPEPOS, XDGTAGPOS};
+    const auto checkPos = std::unordered_set{TAGPOS,    TITLEPOS,           CLASSPOS,     INITIALTITLEPOS, INITIALCLASSPOS, X11POS,         FLOATPOS,  FULLSCREENPOS,
+                                             PINNEDPOS, FULLSCREENSTATEPOS, WORKSPACEPOS, FOCUSPOS,        ONWORKSPACEPOS,  CONTENTTYPEPOS, XDGTAGPOS, GROUPPOS};
     if (checkPos.size() == 1 && checkPos.contains(std::string::npos)) {
         Debug::log(ERR, "Invalid rulev2 syntax: {}", VALUE);
         return "Invalid rulev2 syntax: " + VALUE;
@@ -2630,6 +2637,8 @@ std::optional<std::string> CConfigManager::handleWindowRule(const std::string& c
             min = CONTENTTYPEPOS;
         if (XDGTAGPOS > pos && XDGTAGPOS < min)
             min = XDGTAGPOS;
+        if (GROUPPOS > pos && GROUPPOS < min)
+            min = GROUPPOS;
 
         result = result.substr(0, min - pos);
 
@@ -2694,6 +2703,9 @@ std::optional<std::string> CConfigManager::handleWindowRule(const std::string& c
     if (XDGTAGPOS != std::string::npos)
         rule->m_xdgTag = extract(XDGTAGPOS + 8);
 
+    if (GROUPPOS != std::string::npos)
+        rule->m_group = extract(GROUPPOS + 6) == "1" ? 1 : 0;
+
     if (RULE == "unset") {
         std::erase_if(m_windowRules, [&](const auto& other) {
             if (!other->m_v2)
@@ -2741,6 +2753,9 @@ std::optional<std::string> CConfigManager::handleWindowRule(const std::string& c
                 if (!rule->m_contentType.empty() && rule->m_contentType != other->m_contentType)
                     return false;
 
+                if (rule->m_group != -1 && rule->m_group != other->m_group)
+                    return false;
+
                 return true;
             }
         });
diff --git a/src/desktop/WindowRule.hpp b/src/desktop/WindowRule.hpp
index 9af3909a..b828c8ee 100644
--- a/src/desktop/WindowRule.hpp
+++ b/src/desktop/WindowRule.hpp
@@ -58,6 +58,7 @@ class CWindowRule {
     int               m_fullscreen      = -1;
     int               m_pinned          = -1;
     int               m_focus           = -1;
+    int               m_group           = -1;
     std::string       m_fullscreenState = ""; // empty means any
     std::string       m_onWorkspace     = ""; // empty means any
     std::string       m_workspace       = ""; // empty means any
@@ -70,4 +71,4 @@ class CWindowRule {
     CRuleRegexContainer m_initialTitleRegex;
     CRuleRegexContainer m_initialClassRegex;
     CRuleRegexContainer m_v1Regex;
-};
\ No newline at end of file
+};