diff --git a/routes/finance.js b/routes/finance.js
index 261d13b..ceb0652 100644
--- a/routes/finance.js
+++ b/routes/finance.js
@@ -163,7 +163,7 @@ router.post('/chargebacks/add', requireAdmin, async (req, res) => {
     res.redirect('/admin/finance?success=Rückläufer+eingetragen');
   } catch (err) {
     console.error(err);
-    res.redirect('/admin/finance?error=Fehler+beim+Eintragen');
+    res.redirect('/admin/finance?error=Fehler+beim+Eintragen#chargebacks');
   }
 });
 
@@ -224,16 +224,16 @@ router.post('/dunning/add', requireAdmin, async (req, res) => {
       'INSERT INTO dunning_fees (membership_id, invoice_id, amount, reason, issued_date, notes) VALUES (?,?,?,?,?,?)',
       [membership_id, invoice_id || null, amount, reason || 'Mahngebühr', issued_date, notes || null]
     );
-    res.redirect('/admin/finance?success=Mahngebühr+eingetragen');
+    res.redirect('/admin/finance?success=Mahngeb%C3%BChr+eingetragen#dunning');
   } catch (err) {
-    res.redirect('/admin/finance?error=Fehler+beim+Eintragen');
+    res.redirect('/admin/finance?error=Fehler+beim+Eintragen#chargebacks');
   }
 });
 
 router.post('/dunning/:id/paid', requireAdmin, async (req, res) => {
   try {
     await db.query("UPDATE dunning_fees SET status='paid', paid_at=NOW() WHERE id=?", [req.params.id]);
-    res.redirect('/admin/finance?success=Mahngebühr+als+bezahlt+markiert');
+    res.redirect('/admin/finance?success=Mahngeb%C3%BChr+bezahlt#dunning');
   } catch (err) {
     res.redirect('/admin/finance?error=Fehler');
   }
@@ -242,7 +242,7 @@ router.post('/dunning/:id/paid', requireAdmin, async (req, res) => {
 router.post('/dunning/:id/cancel', requireAdmin, async (req, res) => {
   try {
     await db.query("UPDATE dunning_fees SET status='cancelled' WHERE id=?", [req.params.id]);
-    res.redirect('/admin/finance?success=Mahngebühr+storniert');
+    res.redirect('/admin/finance?success=Mahngeb%C3%BChr+storniert#dunning');
   } catch (err) {
     res.redirect('/admin/finance?error=Fehler');
   }
@@ -270,10 +270,10 @@ router.post('/chargebacks/dunning-all', requireAdmin, async (req, res) => {
       );
       count++;
     }
-    res.redirect(`/admin/finance?success=${count}+Mahngebühren+eingetragen#chargebacks`);
+    res.redirect('/admin/finance?success=Mahngeb%C3%BChren+eingetragen#chargebacks');
   } catch (err) {
     console.error(err);
-    res.redirect('/admin/finance?error=Fehler+beim+Eintragen');
+    res.redirect('/admin/finance?error=Fehler+beim+Eintragen#chargebacks');
   }
 });
 
@@ -287,7 +287,7 @@ router.post('/dunning/add-from-chargeback', requireAdmin, async (req, res) => {
       'INSERT INTO dunning_fees (membership_id, amount, reason, issued_date, notes) VALUES (?,?,?,?,?)',
       [cbs[0].membership_id, amount, reason || 'Mahngebühr Rücklastschrift', issued_date, notes || null]
     );
-    res.redirect('/admin/finance?success=Mahngebühr+eingetragen');
+    res.redirect('/admin/finance?success=Mahngeb%C3%BChr+eingetragen#dunning');
   } catch (err) {
     res.redirect('/admin/finance?error=Fehler');
   }
diff --git a/views/admin/finance.ejs b/views/admin/finance.ejs
index f519a2e..46e4a99 100644
--- a/views/admin/finance.ejs
+++ b/views/admin/finance.ejs
@@ -69,12 +69,12 @@
 
     <!-- ===== TABS ===== -->
     <div class="finance-tabs">
-      <button class="ftab active" onclick="showTab('chart')">📈 Umsatzverlauf</button>
-      <button class="ftab" onclick="showTab('open')">🔴 Offene Posten</button>
-      <button class="ftab" onclick="showTab('chargebacks')">↩️ Rückläufer</button>
-      <button class="ftab" onclick="showTab('dunning')">📬 Mahngebühren</button>
-      <button class="ftab" onclick="showTab('expiring')">⏳ Auslaufende Verträge</button>
-      <button class="ftab" onclick="showTab('settings')">⚙️ Einstellungen</button>
+      <button class="ftab active" onclick="showTab('chart', this)">📈 Umsatzverlauf</button>
+      <button class="ftab" onclick="showTab('open', this)">🔴 Offene Posten</button>
+      <button class="ftab" onclick="showTab('chargebacks', this)">↩️ Rückläufer</button>
+      <button class="ftab" onclick="showTab('dunning', this)">📬 Mahngebühren</button>
+      <button class="ftab" onclick="showTab('expiring', this)">⏳ Auslaufende Verträge</button>
+      <button class="ftab" onclick="showTab('settings', this)">⚙️ Einstellungen</button>
     </div>
 
     <!-- ===== TAB: UMSATZVERLAUF ===== -->
@@ -175,8 +175,8 @@
                   <td>
                     <div style="display:flex;gap:6px;flex-wrap:wrap">
                     <% if (c.status === 'open') { %>
-                      <button class="btn btn-sm btn-warning"
-                        onclick="openDunningModal(<%= c.id %>, '<%= c.last_name %>, <%= c.first_name %>', <%= c.amount %>, '<%= c.period %>')">
+                      <button type="button" class="btn btn-sm btn-warning"
+                        onclick="openDunningModal(<%= c.id %>, '<%= c.last_name %>, <%= c.first_name %>', <%= c.amount %>, '<%= c.period %>');event.stopPropagation()">
                         📬 Mahnen
                       </button>
                       <form method="POST" action="/admin/finance/chargebacks/<%= c.id %>/resolve" style="display:inline">
@@ -578,13 +578,27 @@ new Chart(ctx, {
 });
 
 // Tabs
-function showTab(name) {
+const tabMap = {
+  chart: 0, open: 1, chargebacks: 2, dunning: 3, expiring: 4, settings: 5
+};
+
+function showTab(name, el) {
   document.querySelectorAll('.ftab-content').forEach(t => t.classList.remove('active'));
   document.querySelectorAll('.ftab').forEach(t => t.classList.remove('active'));
   document.getElementById('tab-' + name).classList.add('active');
-  event.target.classList.add('active');
+  const btn = el || document.querySelectorAll('.ftab')[tabMap[name]];
+  if (btn) btn.classList.add('active');
+  history.replaceState(null, '', '#' + name);
 }
 
+// Beim Laden Hash auswerten
+document.addEventListener('DOMContentLoaded', () => {
+  const hash = window.location.hash.replace('#', '');
+  if (hash && document.getElementById('tab-' + hash)) {
+    showTab(hash);
+  }
+});
+
 function toggleModal(id) {
   document.getElementById(id).classList.toggle('hidden');
 }