diff --git a/app/Http/Controllers/ClientCaseContoller.php b/app/Http/Controllers/ClientCaseContoller.php
index 9847f23..8b599eb 100644
--- a/app/Http/Controllers/ClientCaseContoller.php
+++ b/app/Http/Controllers/ClientCaseContoller.php
@@ -223,7 +223,11 @@ public function updateContract(ClientCase $clientCase, string $uuid, UpdateContr
             return back()->with('warning', __('contracts.edit_not_allowed_archived'));
         }
 
-        \DB::transaction(function () use ($request, $contract) {
+        $balanceChanged = false;
+        $oldBalance = null;
+        $newBalance = null;
+
+        \DB::transaction(function () use ($request, $contract, &$balanceChanged, &$oldBalance, &$newBalance) {
             $contract->update([
                 'reference' => $request->input('reference'),
                 'type_id' => $request->input('type_id'),
@@ -254,6 +258,7 @@ public function updateContract(ClientCase $clientCase, string $uuid, UpdateContr
                     $accountData['type_id'] = $request->input('account_type_id');
                 }
                 if ($currentAccount) {
+                    $oldBalance = (float) $currentAccount->balance_amount;
                     $currentAccount->update($accountData);
                     if (array_key_exists('balance_amount', $accountData)) {
                         $currentAccount->forceFill(['balance_amount' => $accountData['balance_amount']])->save();
@@ -264,6 +269,10 @@ public function updateContract(ClientCase $clientCase, string $uuid, UpdateContr
                                 ->update(['balance_amount' => $accountData['balance_amount'], 'updated_at' => now()]);
                             $freshBal = (float) optional($currentAccount->fresh())->balance_amount;
                         }
+                        $newBalance = $freshBal;
+                        if ($oldBalance !== $freshBal) {
+                            $balanceChanged = true;
+                        }
                     } else {
                         $freshBal = (float) optional($currentAccount->fresh())->balance_amount;
                     }
@@ -276,6 +285,27 @@ public function updateContract(ClientCase $clientCase, string $uuid, UpdateContr
 
         });
 
+        // Fire activity if balance changed and settings require it
+        if ($balanceChanged) {
+            $contractSetting = \App\Models\ContractSetting::query()->first();
+            if ($contractSetting && $contractSetting->create_activity_on_balance_change) {
+                $note = str_replace(
+                    ['{old_balance}', '{new_balance}', '{currency}'],
+                    [number_format($oldBalance, 2, '.', ''), number_format($newBalance, 2, '.', ''), 'EUR'],
+                    $contractSetting->activity_note_template ?? ''
+                );
+                \App\Models\Activity::query()->create([
+                    'due_date' => null,
+                    'amount' => $newBalance,
+                    'note' => $note,
+                    'action_id' => $contractSetting->default_action_id,
+                    'decision_id' => $contractSetting->default_decision_id,
+                    'client_case_id' => $contract->client_case_id,
+                    'contract_id' => $contract->id,
+                ]);
+            }
+        }
+
         // Preserve segment filter if present
         $segment = request('segment');
 
diff --git a/app/Http/Controllers/ContractSettingController.php b/app/Http/Controllers/ContractSettingController.php
new file mode 100644
index 0000000..d920033
--- /dev/null
+++ b/app/Http/Controllers/ContractSettingController.php
@@ -0,0 +1,56 @@
+<?php
+
+namespace App\Http\Controllers;
+
+class ContractSettingController extends Controller
+{
+    public function edit(): \Inertia\Response
+    {
+        $setting = \App\Models\ContractSetting::query()->first();
+        if (! $setting) {
+            $setting = \App\Models\ContractSetting::query()->create([
+                'create_activity_on_balance_change' => false,
+                'default_action_id' => null,
+                'default_decision_id' => null,
+                'activity_note_template' => 'Sprememba stanja pogodbe: {old_balance} → {new_balance} {currency}',
+            ]);
+        }
+
+        $decisions = \App\Models\Decision::query()->orderBy('name')->get(['id', 'name']);
+        $actions = \App\Models\Action::query()
+            ->with(['decisions:id'])
+            ->orderBy('name')
+            ->get()
+            ->map(function (\App\Models\Action $a) {
+                return [
+                    'id' => $a->id,
+                    'name' => $a->name,
+                    'decision_ids' => $a->decisions->pluck('id')->values(),
+                ];
+            });
+
+        return \Inertia\Inertia::render('Settings/Contracts/Index', [
+            'setting' => [
+                'id' => $setting->id,
+                'create_activity_on_balance_change' => (bool) $setting->create_activity_on_balance_change,
+                'default_action_id' => $setting->default_action_id,
+                'default_decision_id' => $setting->default_decision_id,
+                'activity_note_template' => $setting->activity_note_template,
+            ],
+            'decisions' => $decisions,
+            'actions' => $actions,
+        ]);
+    }
+
+    public function update(\App\Http\Requests\UpdateContractSettingRequest $request): \Illuminate\Http\RedirectResponse
+    {
+        $data = $request->validated();
+        $setting = \App\Models\ContractSetting::query()->firstOrFail();
+
+        $data['create_activity_on_balance_change'] = (bool) ($data['create_activity_on_balance_change'] ?? false);
+
+        $setting->update($data);
+
+        return back()->with('success', 'Nastavitve shranjene.');
+    }
+}
diff --git a/app/Http/Requests/UpdateContractSettingRequest.php b/app/Http/Requests/UpdateContractSettingRequest.php
new file mode 100644
index 0000000..5b2e17a
--- /dev/null
+++ b/app/Http/Requests/UpdateContractSettingRequest.php
@@ -0,0 +1,23 @@
+<?php
+
+namespace App\Http\Requests;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class UpdateContractSettingRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    public function rules(): array
+    {
+        return [
+            'create_activity_on_balance_change' => ['sometimes', 'boolean'],
+            'default_action_id' => ['nullable', 'integer', 'exists:actions,id'],
+            'default_decision_id' => ['nullable', 'integer', 'exists:decisions,id'],
+            'activity_note_template' => ['nullable', 'string', 'max:255'],
+        ];
+    }
+}
diff --git a/app/Models/ContractSetting.php b/app/Models/ContractSetting.php
new file mode 100644
index 0000000..e201e6a
--- /dev/null
+++ b/app/Models/ContractSetting.php
@@ -0,0 +1,15 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+
+class ContractSetting extends Model
+{
+    protected $fillable = [
+        'create_activity_on_balance_change',
+        'default_action_id',
+        'default_decision_id',
+        'activity_note_template',
+    ];
+}
diff --git a/database/migrations/2026_04_02_213433_create_contract_settings_table.php b/database/migrations/2026_04_02_213433_create_contract_settings_table.php
new file mode 100644
index 0000000..9d7d707
--- /dev/null
+++ b/database/migrations/2026_04_02_213433_create_contract_settings_table.php
@@ -0,0 +1,31 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('contract_settings', function (Blueprint $table): void {
+            $table->id();
+            $table->boolean('create_activity_on_balance_change')->default(false);
+            $table->foreignId('default_action_id')->nullable()->constrained('actions')->nullOnDelete();
+            $table->foreignId('default_decision_id')->nullable()->constrained('decisions')->nullOnDelete();
+            $table->string('activity_note_template', 255)->nullable();
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('contract_settings');
+    }
+};
diff --git a/resources/js/Pages/Settings/Contracts/Index.vue b/resources/js/Pages/Settings/Contracts/Index.vue
new file mode 100644
index 0000000..a710b3c
--- /dev/null
+++ b/resources/js/Pages/Settings/Contracts/Index.vue
@@ -0,0 +1,159 @@
+<script setup>
+import AppLayout from "@/Layouts/AppLayout.vue";
+import { useForm } from "@inertiajs/vue3";
+import { computed, watch } from "vue";
+import AppCard from "@/Components/app/ui/card/AppCard.vue";
+import CardTitle from "@/Components/ui/card/CardTitle.vue";
+import { FileText } from "lucide-vue-next";
+import { Button } from "@/Components/ui/button";
+import { Input } from "@/Components/ui/input";
+import InputLabel from "@/Components/InputLabel.vue";
+import { Checkbox } from "@/Components/ui/checkbox";
+import {
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectTrigger,
+  SelectValue,
+} from "@/Components/ui/select";
+
+const props = defineProps({
+  setting: Object,
+  decisions: Array,
+  actions: Array,
+});
+
+const form = useForm({
+  create_activity_on_balance_change: !!props.setting?.create_activity_on_balance_change,
+  default_action_id: props.setting?.default_action_id ?? null,
+  default_decision_id: props.setting?.default_decision_id ?? null,
+  activity_note_template:
+    props.setting?.activity_note_template ??
+    "Sprememba stanja pogodbe: {old_balance} → {new_balance} {currency}",
+});
+
+const filteredDecisions = computed(() => {
+  const actionId = form.default_action_id;
+  if (!actionId) return [];
+  const action = props.actions?.find((a) => a.id === actionId);
+  if (!action || !action.decision_ids) return [];
+  const ids = new Set(action.decision_ids);
+  return (props.decisions || []).filter((d) => ids.has(d.id));
+});
+
+watch(
+  () => form.default_action_id,
+  (newVal) => {
+    if (!newVal) {
+      form.default_decision_id = null;
+    } else {
+      const ids = new Set((filteredDecisions.value || []).map((d) => d.id));
+      if (!ids.has(form.default_decision_id)) {
+        form.default_decision_id = null;
+      }
+    }
+  }
+);
+
+const submit = () => {
+  form.put(route("settings.contract.update"), {
+    preserveScroll: true,
+  });
+};
+</script>
+
+<template>
+  <AppLayout title="Nastavitve pogodb">
+    <template #header></template>
+    <div class="max-w-3xl mx-auto p-6">
+      <AppCard
+        title=""
+        padding="none"
+        class="p-0! gap-0"
+        header-class="py-3! px-4 gap-0 text-muted-foreground"
+        body-class=""
+      >
+        <template #header>
+          <div class="flex items-center gap-2">
+            <FileText :size="18" />
+            <CardTitle class="uppercase">Nastavitve pogodb</CardTitle>
+          </div>
+        </template>
+        <div class="space-y-6 p-4 border-t">
+          <div class="flex items-center gap-2">
+            <Checkbox
+              id="create-activity"
+              v-model="form.create_activity_on_balance_change"
+            />
+            <InputLabel for="create-activity" class="text-sm font-normal cursor-pointer">
+              Ustvari aktivnost ob spremembi odprtega zneska pogodbe
+            </InputLabel>
+          </div>
+
+          <div class="grid grid-cols-1 md:grid-cols-2 gap-6">
+            <div>
+              <InputLabel for="default-action">Privzeto dejanje</InputLabel>
+              <Select v-model="form.default_action_id">
+                <SelectTrigger id="default-action">
+                  <SelectValue placeholder="— Brez —" />
+                </SelectTrigger>
+                <SelectContent>
+                  <SelectItem :value="null">— Brez —</SelectItem>
+                  <SelectItem v-for="a in actions" :key="a.id" :value="a.id">{{
+                    a.name
+                  }}</SelectItem>
+                </SelectContent>
+              </Select>
+              <div v-if="form.errors.default_action_id" class="text-sm text-red-600 mt-1">
+                {{ form.errors.default_action_id }}
+              </div>
+            </div>
+
+            <div>
+              <InputLabel for="default-decision">Privzeta odločitev</InputLabel>
+              <Select
+                v-model="form.default_decision_id"
+                :disabled="!form.default_action_id"
+              >
+                <SelectTrigger id="default-decision">
+                  <SelectValue placeholder="— Najprej izberite dejanje —" />
+                </SelectTrigger>
+                <SelectContent>
+                  <SelectItem :value="null">— Najprej izberite dejanje —</SelectItem>
+                  <SelectItem v-for="d in filteredDecisions" :key="d.id" :value="d.id">{{
+                    d.name
+                  }}</SelectItem>
+                </SelectContent>
+              </Select>
+              <div
+                v-if="form.errors.default_decision_id"
+                class="text-sm text-red-600 mt-1"
+              >
+                {{ form.errors.default_decision_id }}
+              </div>
+            </div>
+          </div>
+
+          <div>
+            <InputLabel for="note-template">Predloga opombe aktivnosti</InputLabel>
+            <Input id="note-template" v-model="form.activity_note_template" />
+            <p class="text-xs text-gray-500 mt-1">
+              Podprti žetoni: {old_balance}, {new_balance}, {currency}
+            </p>
+            <div
+              v-if="form.errors.activity_note_template"
+              class="text-sm text-red-600 mt-1"
+            >
+              {{ form.errors.activity_note_template }}
+            </div>
+          </div>
+
+          <div class="flex justify-end gap-2">
+            <Button variant="outline" @click="form.reset()">Ponastavi</Button>
+            <Button @click="submit" :disabled="form.processing">Shrani</Button>
+          </div>
+        </div>
+      </AppCard>
+    </div>
+  </AppLayout>
+</template>
diff --git a/resources/js/Pages/Settings/Index.vue b/resources/js/Pages/Settings/Index.vue
index 449fde8..80ad3d1 100644
--- a/resources/js/Pages/Settings/Index.vue
+++ b/resources/js/Pages/Settings/Index.vue
@@ -52,6 +52,12 @@ const settingsCards = [
     route: "settings.contractConfigs.index",
     icon: FileText,
   },
+  {
+    title: "Contract Settings",
+    description: "Auto-activity triggers on contract balance changes.",
+    route: "settings.contract.edit",
+    icon: FileText,
+  },
   {
     title: "Archive Settings",
     description: "Define rules for archiving or soft-deleting aged data.",
diff --git a/routes/web.php b/routes/web.php
index 43cbe07..deeeec6 100644
--- a/routes/web.php
+++ b/routes/web.php
@@ -9,6 +9,7 @@
 use App\Http\Controllers\ClientCaseContoller;
 use App\Http\Controllers\ClientController;
 use App\Http\Controllers\ContractConfigController;
+use App\Http\Controllers\ContractSettingController;
 use App\Http\Controllers\FieldJobController;
 use App\Http\Controllers\FieldJobSettingController;
 use App\Http\Controllers\ImportController;
@@ -518,6 +519,10 @@
     Route::get('settings/installment', [InstallmentSettingController::class, 'edit'])->name('settings.installment.edit');
     Route::put('settings/installment', [InstallmentSettingController::class, 'update'])->name('settings.installment.update');
 
+    // settings - contract settings
+    Route::get('settings/contract', [ContractSettingController::class, 'edit'])->name('settings.contract.edit');
+    Route::put('settings/contract', [ContractSettingController::class, 'update'])->name('settings.contract.update');
+
     Route::get('types/address', function (Request $request) {
         $types = App\Models\Person\AddressType::all();