diff --git a/public/locales/de.json b/public/locales/de.json
index 4283d52..1002dc1 100644
--- a/public/locales/de.json
+++ b/public/locales/de.json
@@ -384,7 +384,14 @@
     "catInsurance": "Versicherung",
     "catCraftsman": "Handwerker",
     "catEmergency": "Notfall",
-    "catMisc": "Sonstiges"
+    "catMisc": "Sonstiges",
+    "categoryDoctor": "Arzt",
+    "categorySchool": "Schule/Kita",
+    "categoryAuthority": "Behörde",
+    "categoryInsurance": "Versicherung",
+    "categoryCraftsman": "Handwerker",
+    "categoryEmergency": "Notfall",
+    "categoryOther": "Sonstiges"
   },
 
   "budget": {
diff --git a/public/locales/en.json b/public/locales/en.json
index 6179c9c..e0b2754 100644
--- a/public/locales/en.json
+++ b/public/locales/en.json
@@ -384,7 +384,14 @@
     "catInsurance": "Insurance",
     "catCraftsman": "Tradesperson",
     "catEmergency": "Emergency",
-    "catMisc": "Miscellaneous"
+    "catMisc": "Miscellaneous",
+    "categoryDoctor": "Doctor",
+    "categorySchool": "School/Daycare",
+    "categoryAuthority": "Authority",
+    "categoryInsurance": "Insurance",
+    "categoryCraftsman": "Tradesperson",
+    "categoryEmergency": "Emergency",
+    "categoryOther": "Other"
   },
 
   "budget": {
diff --git a/public/pages/budget.js b/public/pages/budget.js
index bdfa7a2..4974b27 100644
--- a/public/pages/budget.js
+++ b/public/pages/budget.js
@@ -31,8 +31,11 @@ const CATEGORY_LABELS = () => ({
   'Sonstiges':    t('budget.catMisc'),
 });
 
-const MONTH_NAMES = ['Januar', 'Februar', 'März', 'April', 'Mai', 'Juni',
-                     'Juli', 'August', 'September', 'Oktober', 'November', 'Dezember'];
+function getMonthName(monthIndex) {
+  // monthIndex: 0-based (0=Januar, 11=Dezember)
+  const date = new Date(2000, monthIndex, 1);
+  return new Intl.DateTimeFormat(document.documentElement.lang || 'de', { month: 'long' }).format(date);
+}
 
 // --------------------------------------------------------
 // State
@@ -56,7 +59,7 @@ function formatAmount(n) {
 
 function formatMonthLabel(ym) {
   const [y, m] = ym.split('-');
-  return `${MONTH_NAMES[parseInt(m, 10) - 1]} ${y}`;
+  return `${getMonthName(parseInt(m, 10) - 1)} ${y}`;
 }
 
 function addMonths(ym, n) {
diff --git a/public/pages/contacts.js b/public/pages/contacts.js
index 57d2b3c..cf568e9 100644
--- a/public/pages/contacts.js
+++ b/public/pages/contacts.js
@@ -26,6 +26,18 @@ const CATEGORY_ICONS = {
   'Sonstiges':    '📋',
 };
 
+function CATEGORY_LABELS() {
+  return {
+    'Arzt':         t('contacts.categoryDoctor'),
+    'Schule/Kita':  t('contacts.categorySchool'),
+    'Behörde':      t('contacts.categoryAuthority'),
+    'Versicherung': t('contacts.categoryInsurance'),
+    'Handwerker':   t('contacts.categoryCraftsman'),
+    'Notfall':      t('contacts.categoryEmergency'),
+    'Sonstiges':    t('contacts.categoryOther'),
+  };
+}
+
 // --------------------------------------------------------
 // State
 // --------------------------------------------------------
@@ -66,7 +78,7 @@ export async function render(container, { user }) {
       <div class="contacts-filters" id="contacts-filters">
         <button class="contact-filter-chip contact-filter-chip--active" data-cat="">${t('contacts.filterAll')}</button>
         ${CATEGORIES.map((c) => `
-          <button class="contact-filter-chip" data-cat="${escHtml(c)}">${CATEGORY_ICONS[c] || ''} ${escHtml(c)}</button>
+          <button class="contact-filter-chip" data-cat="${escHtml(c)}">${CATEGORY_ICONS[c] || ''} ${CATEGORY_LABELS()[c] || escHtml(c)}</button>
         `).join('')}
       </div>
       <div id="contacts-list" class="contacts-list"></div>
@@ -184,7 +196,7 @@ function renderList() {
     .sort(([a], [b]) => CATEGORIES.indexOf(a) - CATEGORIES.indexOf(b))
     .map(([cat, items]) => `
       <div class="contact-group">
-        <div class="contact-group__header">${CATEGORY_ICONS[cat] || ''} ${escHtml(cat)}</div>
+        <div class="contact-group__header">${CATEGORY_ICONS[cat] || ''} ${CATEGORY_LABELS()[cat] || escHtml(cat)}</div>
         ${items.map((c) => renderContactItem(c)).join('')}
       </div>
     `).join('');
@@ -242,8 +254,9 @@ function openContactModal({ mode, contact = null }) {
   const isEdit = mode === 'edit';
   const v      = (field) => escHtml(isEdit && contact[field] ? contact[field] : '');
 
+  const catLabels = CATEGORY_LABELS();
   const catOpts = CATEGORIES.map((c) =>
-    `<option value="${c}" ${isEdit && contact.category === c ? 'selected' : ''}>${c}</option>`
+    `<option value="${c}" ${isEdit && contact.category === c ? 'selected' : ''}>${catLabels[c] || escHtml(c)}</option>`
   ).join('');
 
   const content = `