diff --git a/src/interfaces/node.h b/src/interfaces/node.h
--- a/src/interfaces/node.h
+++ b/src/interfaces/node.h
@@ -100,6 +100,10 @@
     virtual void forceSetting(const std::string &name,
                               const util::SettingsValue &value) = 0;
 
+    //! Clear all settings in <datadir>/settings.json and store a backup of
+    //! previous settings in <datadir>/settings.json.bak.
+    virtual void resetSettings() = 0;
+
     //! Map port.
     virtual void mapPort(bool use_upnp, bool use_natpmp) = 0;
 
diff --git a/src/interfaces/node.cpp b/src/interfaces/node.cpp
--- a/src/interfaces/node.cpp
+++ b/src/interfaces/node.cpp
@@ -121,6 +121,13 @@
                 }
             });
         }
+        void resetSettings() override {
+            gArgs.WriteSettingsFile(/*errors=*/nullptr, /*backup=*/true);
+            gArgs.LockSettings([&](util::Settings &settings) {
+                settings.rw_settings.clear();
+            });
+            gArgs.WriteSettingsFile();
+        }
         void mapPort(bool use_upnp, bool use_natpmp) override {
             StartMapPort(use_upnp, use_natpmp);
         }
diff --git a/src/util/system.h b/src/util/system.h
--- a/src/util/system.h
+++ b/src/util/system.h
@@ -399,7 +399,8 @@
      * Get settings file path, or return false if read-write settings were
      * disabled with -nosettings.
      */
-    bool GetSettingsPath(fs::path *filepath = nullptr, bool temp = false) const;
+    bool GetSettingsPath(fs::path *filepath = nullptr, bool temp = false,
+                         bool backup = false) const;
 
     /**
      * Read settings file. Push errors to vector, or log them if null.
@@ -407,9 +408,11 @@
     bool ReadSettingsFile(std::vector<std::string> *errors = nullptr);
 
     /**
-     * Write settings file. Push errors to vector, or log them if null.
+     * Write settings file or backup settings file. Push errors to vector, or
+     * log them if null.
      */
-    bool WriteSettingsFile(std::vector<std::string> *errors = nullptr) const;
+    bool WriteSettingsFile(std::vector<std::string> *errors = nullptr,
+                           bool backup = false) const;
 
     /**
      * Get current setting from config file or read/write settings file,
diff --git a/src/util/system.cpp b/src/util/system.cpp
--- a/src/util/system.cpp
+++ b/src/util/system.cpp
@@ -504,10 +504,14 @@
     return true;
 }
 
-bool ArgsManager::GetSettingsPath(fs::path *filepath, bool temp) const {
+bool ArgsManager::GetSettingsPath(fs::path *filepath, bool temp,
+                                  bool backup) const {
     if (IsArgNegated("-settings")) {
         return false;
     }
+    if (backup) {
+        settings += ".bak";
+    }
     if (filepath) {
         std::string settings = GetArg("-settings", BITCOIN_SETTINGS_FILENAME);
         *filepath = fsbridge::AbsPathJoin(
@@ -553,10 +557,11 @@
     return true;
 }
 
-bool ArgsManager::WriteSettingsFile(std::vector<std::string> *errors) const {
+bool ArgsManager::WriteSettingsFile(std::vector<std::string> *errors,
+                                    bool backup) const {
     fs::path path, path_tmp;
-    if (!GetSettingsPath(&path, /* temp= */ false) ||
-        !GetSettingsPath(&path_tmp, /* temp= */ true)) {
+    if (!GetSettingsPath(&path, /*temp=*/false, backup) ||
+        !GetSettingsPath(&path_tmp, /*temp=*/true, backup)) {
         throw std::logic_error("Attempt to write settings file when dynamic "
                                "settings are disabled.");
     }