diff --git a/services.py b/services.py
index 1f9d826..51c4bd8 100644
--- a/services.py
+++ b/services.py
@@ -18,12 +18,29 @@ async def get_settings(user_id: str) -> CastleSettings:
 
 
 async def update_settings(user_id: str, data: CastleSettings) -> CastleSettings:
+    from loguru import logger
+
+    from .fava_client import init_fava_client
+
     settings = await get_castle_settings(user_id)
     if not settings:
         settings = await create_castle_settings(user_id, data)
     else:
         settings = await update_castle_settings(user_id, data)
 
+    # Reinitialize Fava client with new settings
+    try:
+        init_fava_client(
+            fava_url=settings.fava_url,
+            ledger_slug=settings.fava_ledger_slug,
+            timeout=settings.fava_timeout,
+        )
+        logger.info(
+            f"Fava client reinitialized: {settings.fava_url}/{settings.fava_ledger_slug}"
+        )
+    except Exception as e:
+        logger.error(f"Failed to reinitialize Fava client: {e}")
+
     return settings
 
 
diff --git a/static/js/index.js b/static/js/index.js
index 3fc736e..3c8d9b7 100644
--- a/static/js/index.js
+++ b/static/js/index.js
@@ -31,6 +31,7 @@ window.app = Vue.createApp({
       userInfo: null, // User information including equity eligibility
       isAdmin: false,
       isSuperUser: false,
+      settingsLoaded: false, // Flag to prevent race conditions on toolbar buttons
       castleWalletConfigured: false,
       userWalletConfigured: false,
       currentExchangeRate: null, // BTC/EUR rate (sats per EUR)
@@ -57,6 +58,9 @@ window.app = Vue.createApp({
       settingsDialog: {
         show: false,
         castleWalletId: '',
+        favaUrl: 'http://localhost:3333',
+        favaLedgerSlug: 'castle-ledger',
+        favaTimeout: 10.0,
         loading: false
       },
       userWalletDialog: {
@@ -517,6 +521,9 @@ window.app = Vue.createApp({
       } catch (error) {
         // Settings not available
         this.castleWalletConfigured = false
+      } finally {
+        // Mark settings as loaded to enable toolbar buttons
+        this.settingsLoaded = true
       }
     },
     async loadUserWallet() {
@@ -534,6 +541,9 @@ window.app = Vue.createApp({
     },
     showSettingsDialog() {
       this.settingsDialog.castleWalletId = this.settings?.castle_wallet_id || ''
+      this.settingsDialog.favaUrl = this.settings?.fava_url || 'http://localhost:3333'
+      this.settingsDialog.favaLedgerSlug = this.settings?.fava_ledger_slug || 'castle-ledger'
+      this.settingsDialog.favaTimeout = this.settings?.fava_timeout || 10.0
       this.settingsDialog.show = true
     },
     showUserWalletDialog() {
@@ -549,6 +559,14 @@ window.app = Vue.createApp({
         return
       }
 
+      if (!this.settingsDialog.favaUrl) {
+        this.$q.notify({
+          type: 'warning',
+          message: 'Fava URL is required'
+        })
+        return
+      }
+
       this.settingsDialog.loading = true
       try {
         await LNbits.api.request(
@@ -556,7 +574,10 @@ window.app = Vue.createApp({
           '/castle/api/v1/settings',
           this.g.user.wallets[0].adminkey,
           {
-            castle_wallet_id: this.settingsDialog.castleWalletId
+            castle_wallet_id: this.settingsDialog.castleWalletId,
+            fava_url: this.settingsDialog.favaUrl,
+            fava_ledger_slug: this.settingsDialog.favaLedgerSlug || 'castle-ledger',
+            fava_timeout: parseFloat(this.settingsDialog.favaTimeout) || 10.0
           }
         )
         this.$q.notify({
diff --git a/static/js/permissions.js b/static/js/permissions.js
index 0de3569..4cc54f0 100644
--- a/static/js/permissions.js
+++ b/static/js/permissions.js
@@ -1118,5 +1118,3 @@ window.app = Vue.createApp({
     }
   }
 })
-
-window.app.mount('#vue')
diff --git a/templates/castle/index.html b/templates/castle/index.html
index 6648e6c..2a1e665 100644
--- a/templates/castle/index.html
+++ b/templates/castle/index.html
@@ -17,13 +17,14 @@
             <p class="q-mb-none">Track expenses, receivables, and balances for the collective</p>
           </div>
           <div class="col-auto q-gutter-xs">
-            <q-btn v-if="!isSuperUser" flat round icon="account_balance_wallet" @click="showUserWalletDialog">
+            <!-- Wait for settings to load before showing role-specific buttons to prevent race conditions -->
+            <q-btn v-if="settingsLoaded && !isSuperUser" flat round icon="account_balance_wallet" @click="showUserWalletDialog">
               <q-tooltip>Configure Your Wallet</q-tooltip>
             </q-btn>
-            <q-btn v-if="isSuperUser" flat round icon="admin_panel_settings" :href="'/castle/permissions'">
+            <q-btn v-if="settingsLoaded && isSuperUser" flat round icon="admin_panel_settings" :href="'/castle/permissions'">
               <q-tooltip>Manage Permissions (Admin)</q-tooltip>
             </q-btn>
-            <q-btn v-if="isSuperUser" flat round icon="settings" @click="showSettingsDialog">
+            <q-btn v-if="settingsLoaded && isSuperUser" flat round icon="settings" @click="showSettingsDialog">
               <q-tooltip>Castle Settings (Super User Only)</q-tooltip>
             </q-btn>
           </div>
@@ -32,7 +33,7 @@
     </q-card>
 
     <!-- Setup Warning -->
-    <q-banner v-if="!castleWalletConfigured && isSuperUser" class="bg-warning text-white" rounded>
+    <q-banner v-if="settingsLoaded && !castleWalletConfigured && isSuperUser" class="bg-warning text-white" rounded>
       <template v-slot:avatar>
         <q-icon name="warning" color="white"></q-icon>
       </template>
@@ -44,7 +45,7 @@
       </template>
     </q-banner>
 
-    <q-banner v-if="!castleWalletConfigured && !isSuperUser" class="bg-info text-white" rounded>
+    <q-banner v-if="settingsLoaded && !castleWalletConfigured && !isSuperUser" class="bg-info text-white" rounded>
       <template v-slot:avatar>
         <q-icon name="info" color="white"></q-icon>
       </template>
@@ -53,7 +54,7 @@
       </div>
     </q-banner>
 
-    <q-banner v-if="castleWalletConfigured && !userWalletConfigured && !isSuperUser" class="bg-orange text-white" rounded>
+    <q-banner v-if="settingsLoaded && castleWalletConfigured && !userWalletConfigured && !isSuperUser" class="bg-orange text-white" rounded>
       <template v-slot:avatar>
         <q-icon name="account_balance_wallet" color="white"></q-icon>
       </template>
@@ -1122,10 +1123,46 @@
         :disable="!isSuperUser"
       ></q-select>
 
-      <div class="text-caption text-grey">
+      <div class="text-caption text-grey q-mb-md">
         Select the wallet that will be used for Castle operations and transactions.
       </div>
 
+      <q-separator class="q-my-md"></q-separator>
+
+      <div class="text-subtitle2 q-mb-sm">Fava/Beancount Integration</div>
+
+      <q-input
+        filled
+        dense
+        v-model="settingsDialog.favaUrl"
+        label="Fava URL *"
+        hint="Base URL of the Fava server (e.g., http://localhost:3333)"
+        :readonly="!isSuperUser"
+        :disable="!isSuperUser"
+      ></q-input>
+
+      <q-input
+        filled
+        dense
+        v-model="settingsDialog.favaLedgerSlug"
+        label="Ledger Slug"
+        hint="Ledger identifier in Fava URL (e.g., castle-ledger)"
+        :readonly="!isSuperUser"
+        :disable="!isSuperUser"
+      ></q-input>
+
+      <q-input
+        filled
+        dense
+        type="number"
+        step="0.5"
+        v-model.number="settingsDialog.favaTimeout"
+        label="Timeout (seconds)"
+        hint="Request timeout for Fava API calls"
+        :readonly="!isSuperUser"
+        :disable="!isSuperUser"
+      ></q-input>
+
       <div class="row q-mt-lg">
         <q-btn
           v-if="isSuperUser"