diff --git a/app/app/Jobs/Supplier/SyncSupplierProjectsJob.php b/app/app/Jobs/Supplier/SyncSupplierProjectsJob.php
index e4fbda8f..af425a12 100644
--- a/app/app/Jobs/Supplier/SyncSupplierProjectsJob.php
+++ b/app/app/Jobs/Supplier/SyncSupplierProjectsJob.php
@@ -134,6 +134,10 @@ class SyncSupplierProjectsJob implements ShouldQueue
             $groups[$key]['projects'][] = $project;
         }
 
+        // Активные сегодня источники (по слепку) — их заказы НЕ гасим в deactivation-проходе.
+        /** @var array<string, bool> $activeKeys */
+        $activeKeys = array_fill_keys(array_keys($groups), true);
+
         // 3. Sync each group
         try {
             foreach ($groups as $group) {
@@ -192,6 +196,13 @@ class SyncSupplierProjectsJob implements ShouldQueue
                     continue;
                 }
             }
+
+            // 4. Deactivation (money-critical, 18:00 ДО снимка поставщика в 21:00): гасим
+            // заказы источников, у которых на сегодняшний слепок не осталось ни одного
+            // активного проекта. Пропускаем при aborted (time-budget/mass-fail/auth).
+            if (! $aborted) {
+                $this->deactivateOrphanedOrders($activeKeys);
+            }
         } finally {
             $this->recordRunSummary(
                 startedAt: $startedAt,
@@ -205,6 +216,103 @@ class SyncSupplierProjectsJob implements ShouldQueue
         }
     }
 
+    /**
+     * Deactivation (18:00, money-critical — owner-reported 2026-07-08, verified on prod live DB):
+     * гасим у поставщика заказы источников, у которых на СЕГОДНЯШНИЙ слепок не осталось ни
+     * одного активного проекта. Поставщик фиксирует завтрашнюю заливку своим снимком в 21:00,
+     * поэтому единственное окно остановить заказ — этот 18:00-прогон ДО снимка. Без этого
+     * осиротевший заказ оставался включённым (галочка вкл, лимит > 0) → поставщик лил лиды и
+     * списывал за остановленный клиентом проект.
+     *
+     * Активность — из СЛЕПКА ($activeKeys = ключи sync-групп за завтра), НЕ из live is_active:
+     * слепок-инвариант — проект, paused'нутый уже ПОСЛЕ снятия слепка, честно доезжает
+     * поставщику (см. collectEligibleProjects); гасим только то, чего в слепке нет.
+     *
+     * Осиротевший = supplier_project с external_id, inactive_since IS NULL, чей
+     * (signal_type|unique_key) не входит в $activeKeys. Шлём updateProject(status='paused') с
+     * ненулевым лимитом (кабинет отклоняет limit=0 даже при паузе), помечаем inactive_since
+     * ТОЛЬКО после успешной отправки (иначе — ретрай следующим прогоном). Реактивацию при
+     * возврате проекта делают CleanupInactiveSupplierProjectsJob (Phase A) + syncGroup(active).
+     *
+     * @param  array<string, bool>  $activeKeys  ключи «signal_type|identifier» активных групп
+     */
+    private function deactivateOrphanedOrders(array $activeKeys): int
+    {
+        $paused = 0;
+
+        // get() (не cursor) — на shared PDO тестов курсор конфликтует с write'ами в цикле;
+        // набор ограничен (активные + ещё-не-погашенные осиротевшие заказы).
+        $candidates = SupplierProject::on(self::DB_CONNECTION)
+            ->whereNotNull('supplier_external_id')
+            ->whereNull('inactive_since')
+            ->orderBy('id')
+            ->get();
+
+        foreach ($candidates as $sp) {
+            if (isset($activeKeys[$sp->signal_type.'|'.$sp->unique_key])) {
+                continue; // источник ещё активен в сегодняшнем слепке — не трогаем
+            }
+            if (now()->timezone('Europe/Moscow')->format('H:i') >= self::TIME_BUDGET_CUTOFF) {
+                break; // время вышло — недогашенное подберёт следующий прогон
+            }
+
+            $regions = array_map('intval', (array) ($sp->current_regions ?? []));
+            $workdays = $sp->current_workdays !== null && $sp->current_workdays !== []
+                ? array_map('intval', (array) $sp->current_workdays)
+                : [1, 2, 3, 4, 5, 6, 7];
+            $tag = count($regions) === 1
+                ? (RussianRegions::CODE_TO_NAME[$regions[0]] ?? (string) $regions[0])
+                : 'РФ';
+
+            $dto = new SupplierProjectDto(
+                platform: $sp->platform,
+                signalType: (string) $sp->signal_type,
+                uniqueKey: (string) $sp->unique_key,
+                limit: max(1, (int) $sp->current_limit),
+                workdays: $workdays,
+                regions: $regions,
+                regionsReverse: false,
+                status: 'paused',
+                tag: $tag,
+                platforms: [$sp->platform],
+            );
+
+            try {
+                $this->channel->updateProject((int) $sp->supplier_external_id, $dto);
+            } catch (Throwable $e) {
+                // Transient/portal error — inactive_since НЕ ставим, ретрай следующим прогоном.
+                Log::warning('supplier.sync.deactivate_failed', [
+                    'unique_key' => (string) $sp->unique_key,
+                    'platform' => $sp->platform,
+                    'error' => $e->getMessage(),
+                ]);
+
+                continue;
+            }
+
+            $sp->forceFill([
+                'sync_status' => 'ok',
+                'last_synced_at' => now(),
+                'inactive_since' => now(),
+            ])->save();
+
+            SupplierSyncLog::on(self::DB_CONNECTION)->create([
+                'supplier_project_id' => $sp->id,
+                'action' => 'update',
+                'http_status' => 200,
+                'created_at' => now(),
+            ]);
+
+            $paused++;
+        }
+
+        if ($paused > 0) {
+            Log::info('supplier.sync.deactivated_orphaned', ['count' => $paused]);
+        }
+
+        return $paused;
+    }
+
     /**
      * Эпик 5: одна строка-сводка в supplier_sync_runs по завершении заливки.
      * Пишется и при раннем abort (time-budget / mass-fail / auth) — через finally.
diff --git a/app/tests/Feature/Supplier/SyncSupplierProjectsJobTest.php b/app/tests/Feature/Supplier/SyncSupplierProjectsJobTest.php
index 30aa2631..6b91533d 100644
--- a/app/tests/Feature/Supplier/SyncSupplierProjectsJobTest.php
+++ b/app/tests/Feature/Supplier/SyncSupplierProjectsJobTest.php
@@ -577,3 +577,113 @@ test('nightly: re-creates donor on portal when its external_id no longer exists
     expect($sps)->toHaveCount(3);
     expect($sps->pluck('supplier_external_id')->all())->toBe(['8001', '8002', '8003']);
 });
+
+// ---------------------------------------------------------------------------
+// Deactivation (18:00): turn OFF orders whose source has no active project left.
+// Money-critical (owner-reported 2026-07-08, verified on prod live DB): prod runs
+// in BATCH mode. The supplier fixes tomorrow's delivery by its 21:00 snapshot, so the
+// ONLY window to STOP an order is the 18:00 batch sync — before that snapshot. This
+// nightly job only processed ACTIVE projects and never turned OFF a source whose
+// projects are all now paused → the paused order stayed active at the supplier → next
+// day leads (and charges) kept coming. The 18:00 job must push status=paused for such
+// orphaned orders before 21:00.
+// ---------------------------------------------------------------------------
+
+test('nightly 18:00: a source with no active project left is turned OFF (status=paused) at the supplier', function (): void {
+    $tenant = Tenant::factory()->create();
+    $common = '79997778899';
+
+    // Project is PAUSED → excluded from tomorrow's snapshot (SnapshotProjectRoutingJob
+    // filters is_active=true). Deliberately NO insertSnapshotForTomorrow — nothing active
+    // references this source tonight, so its supplier order is orphaned.
+    Project::factory()->create([
+        'tenant_id' => $tenant->id, 'is_active' => false, 'signal_type' => 'call',
+        'signal_identifier' => $common, 'daily_limit_target' => 6, 'delivery_days_mask' => 127, 'regions' => [],
+    ]);
+
+    // Pre-seed the supplier orders created earlier when the project was live (numeric
+    // external ids so updateProject's (int) cast keeps id != 0).
+    foreach (['B1' => '90001', 'B2' => '90002', 'B3' => '90003'] as $platform => $ext) {
+        SupplierProject::on('pgsql_supplier')->create([
+            'platform' => $platform, 'signal_type' => 'call', 'unique_key' => $common,
+            'subject_code' => null, 'supplier_external_id' => $ext, 'current_limit' => 2,
+            'current_workdays' => [1, 2, 3, 4, 5, 6, 7], 'current_regions' => [], 'sync_status' => 'ok',
+            'last_synced_at' => now()->subDay(),
+        ]);
+    }
+
+    $savePayloads = [];
+    Http::fake([
+        'crm.bp-gr.ru/admin/visit/rt-project-save' => function ($request) use (&$savePayloads) {
+            $savePayloads[] = $request->data();
+
+            return Http::response(['status' => 'OK', 'message' => '', 'id' => (string) ($request->data()['id'] ?? 0)], 200);
+        },
+        'crm.bp-gr.ru/admin/visit/rt-projects-load*' => Http::response(['projects' => []], 200),
+    ]);
+
+    (new SyncSupplierProjectsJob)->handle(app(AjaxProjectChannel::class));
+
+    // The 3 orphaned orders were turned OFF: update (id != 0) with status=false.
+    $offCalls = array_values(array_filter(
+        $savePayloads,
+        fn ($p) => (int) ($p['id'] ?? 0) !== 0 && ($p['status'] ?? null) === false
+    ));
+    expect($offCalls)->toHaveCount(3);
+    // Non-zero limit kept (portal rejects limit=0 even when paused).
+    foreach ($offCalls as $p) {
+        expect((int) $p['limit'])->toBeGreaterThan(0);
+    }
+    // Local rows marked inactive_since so cleanup/UI reflect the pause.
+    expect(SupplierProject::on('pgsql_supplier')->where('unique_key', $common)->whereNotNull('inactive_since')->count())->toBe(3);
+});
+
+test('nightly 18:00: a deleted project leftover order is turned OFF but KEPT in DB while its snapshot tail still routes', function (): void {
+    // Composition of the new deactivation pass with delete-defer (DeleteSupplierProjectTailGuardTest):
+    // when a project is deleted but its donor is deferred (so already-ordered tail leads still
+    // route via the snapshot), the 18:00 pass must still turn the order OFF at the supplier
+    // (stop FUTURE ordering) — WITHOUT deleting the local donor (the tail still needs it).
+    $tenant = Tenant::factory()->create();
+    $common = '79996665544';
+
+    // Donor exists (created when the project was live). Project already hard-deleted → no pivot
+    // links, and NOT in tomorrow's active snapshot.
+    $sp = SupplierProject::on('pgsql_supplier')->create([
+        'platform' => 'B1', 'signal_type' => 'call', 'unique_key' => $common,
+        'subject_code' => null, 'supplier_external_id' => '95001', 'current_limit' => 3,
+        'current_workdays' => [1, 2, 3, 4, 5, 6, 7], 'current_regions' => [], 'sync_status' => 'ok',
+        'last_synced_at' => now()->subDay(),
+    ]);
+    // Tail snapshot for the source (fake project_id → not an active project, mirrors the
+    // delete tail-guard fixture). LeadRouter still needs the donor for tail matching.
+    DB::table('project_routing_snapshots')->insert([
+        'snapshot_date' => Carbon::tomorrow('Europe/Moscow')->toDateString(),
+        'project_id' => 987654, 'tenant_id' => $tenant->id, 'daily_limit' => 5,
+        'delivery_days_mask' => 127, 'regions' => '{}', 'signal_type' => 'call',
+        'signal_identifier' => $common, 'sms_senders' => null, 'sms_keyword' => null,
+        'expected_volume' => 5, 'delivered_count' => 0, 'created_at' => now(),
+    ]);
+
+    $savePayloads = [];
+    Http::fake([
+        'crm.bp-gr.ru/admin/visit/rt-project-save' => function ($request) use (&$savePayloads) {
+            $savePayloads[] = $request->data();
+
+            return Http::response(['status' => 'OK', 'message' => '', 'id' => (string) ($request->data()['id'] ?? 0)], 200);
+        },
+        'crm.bp-gr.ru/admin/visit/rt-projects-load*' => Http::response(['projects' => []], 200),
+    ]);
+
+    (new SyncSupplierProjectsJob)->handle(app(AjaxProjectChannel::class));
+
+    // Order turned OFF at the supplier (update id != 0, status=false) — stops future ordering.
+    $off = array_values(array_filter(
+        $savePayloads,
+        fn ($p) => (int) ($p['id'] ?? 0) !== 0 && ($p['status'] ?? null) === false
+    ));
+    expect($off)->toHaveCount(1);
+    // The local donor record is KEPT (not deleted) so the snapshot tail still routes; marked inactive.
+    $fresh = SupplierProject::on('pgsql_supplier')->find($sp->id);
+    expect($fresh)->not->toBeNull();
+    expect($fresh->inactive_since)->not->toBeNull();
+});