diff --git a/scripts/worker.ts b/scripts/worker.ts
index a5e0b7b..624fd05 100644
--- a/scripts/worker.ts
+++ b/scripts/worker.ts
@@ -25,7 +25,11 @@ try {
     adminEmail: env().ADMIN_NOTIFY_EMAIL ?? null,
   });
   console.log(`[worker] ${new Date().toISOString()} ${JSON.stringify(result)}`);
-  process.exitCode = result.emails.failed > 0 ? 1 : 0;
+  // Teilfehler (einzelne Buchungen bei Stripe) machen den Job sichtbar
+  // fehlgeschlagen, ohne die uebrigen Aufgaben des Laufs zu verhindern.
+  const partialFailures =
+    result.emails.failed + result.held.failed + result.schedules.failed + result.installments.failed + result.stopped.failed;
+  process.exitCode = partialFailures > 0 ? 1 : 0;
 } catch (error) {
   console.error(`[worker] Abbruch: ${error instanceof Error ? error.message : "unbekannter Fehler"}`);
   process.exitCode = 1;
diff --git a/src/lib/admin-service.ts b/src/lib/admin-service.ts
index ff8164b..64d8fba 100644
--- a/src/lib/admin-service.ts
+++ b/src/lib/admin-service.ts
@@ -59,10 +59,8 @@ export async function cancelBooking(
   // Zahlungsmethode trennen: nach einer Stornierung darf nichts mehr
   // abgebucht werden.
   if (before.stripeCheckoutSessionId) await gateway.expireCheckoutSession(before.stripeCheckoutSessionId).catch(() => undefined);
-  try {
-    await stopCanceledInstallmentPlans(db, gateway, [before.id], actor);
-  } catch (error) {
-    console.error(`[admin] Ratenplan fuer Buchung ${before.id} nicht beendet: ${error instanceof Error ? error.message : "unbekannt"}`);
+  const plan = await stopCanceledInstallmentPlans(db, gateway, [before.id], actor);
+  if (plan.failed > 0) {
     return {
       ok: false,
       message: "Buchung storniert, aber der Ratenplan bei Stripe ließ sich noch nicht beenden. Der Hintergrundlauf versucht es alle 10 Minuten erneut.",
diff --git a/src/lib/installment-billing.ts b/src/lib/installment-billing.ts
index 61f2909..bcc5c8c 100644
--- a/src/lib/installment-billing.ts
+++ b/src/lib/installment-billing.ts
@@ -135,7 +135,9 @@ export async function holdSchedulesInReview(db: Db, gateway: PaymentGateway, boo
     select: { id: true, stripeScheduleId: true },
     take: 50,
   });
-  for (const booking of candidates) {
+  const failed = await eachBooking(candidates, "anhalten", async (booking) => {
+    // Erst bei Stripe beenden; scheitert das, bleibt alles wie es ist und der
+    // naechste Lauf versucht es erneut.
     await gateway.cancelInstallmentSchedule(booking.stripeScheduleId!);
     await db.$transaction(async (tx) => {
       await lockBooking(tx, booking.id);
@@ -146,8 +148,26 @@ export async function holdSchedulesInReview(db: Db, gateway: PaymentGateway, boo
       await tx.booking.update({ where: { id: booking.id }, data: { stripeScheduleId: null } });
       await audit(tx, actor, "installments.schedule_held_for_review", "Booking", booking.id, { scheduleId: booking.stripeScheduleId });
     });
+  });
+  return { held: candidates.length - failed, failed };
+}
+
+/**
+ * Arbeitet Buchungen einzeln ab: ein Stripe-Fehler bei einer Buchung haelt
+ * weder die uebrigen noch den restlichen Worker-Lauf auf. Liefert die Zahl
+ * der Fehlschlaege.
+ */
+export async function eachBooking<T extends { id: string }>(items: T[], label: string, fn: (item: T) => Promise<void>): Promise<number> {
+  let failed = 0;
+  for (const item of items) {
+    try {
+      await fn(item);
+    } catch (error) {
+      failed++;
+      console.error(`[ratenplan] ${label} fuer Buchung ${item.id} fehlgeschlagen: ${error instanceof Error ? error.message : "unbekannt"}`);
+    }
   }
-  return { held: candidates.length };
+  return failed;
 }
 
 function schedulePlanProblem(
@@ -183,13 +203,13 @@ export async function stopCanceledInstallmentPlans(db: Db, gateway: PaymentGatew
     },
     take: 50,
   });
-  for (const booking of candidates) {
+  const failed = await eachBooking(candidates, "beenden", async (booking) => {
     await gateway.cancelInstallmentSchedule(booking.stripeScheduleId!);
     if (booking.stripePaymentMethodId) await gateway.detachPaymentMethod(booking.stripePaymentMethodId);
     await db.booking.update({ where: { id: booking.id }, data: { paymentMethodDetachedAt: new Date() } });
     await audit(db, actor, "installments.schedule_canceled", "Booking", booking.id, { scheduleId: booking.stripeScheduleId });
-  }
-  return { stopped: candidates.length };
+  });
+  return { stopped: candidates.length - failed, failed };
 }
 
 /**
diff --git a/src/lib/payment-gateway.ts b/src/lib/payment-gateway.ts
index a7e5911..9ec40b8 100644
--- a/src/lib/payment-gateway.ts
+++ b/src/lib/payment-gateway.ts
@@ -267,9 +267,13 @@ export class StripeGateway implements PaymentGateway {
     }
     const subscriptionId = idOf(schedule.subscription);
     if (!subscriptionId) return;
-    // Offene Rechnungen wuerden sonst weiter automatisch eingezogen.
-    for await (const invoice of this.stripe.invoices.list({ subscription: subscriptionId, status: "open", limit: 100 })) {
-      await this.stripe.invoices.voidInvoice(invoice.id!);
+    // Offene Rechnungen wuerden sonst weiter automatisch eingezogen. Entwuerfe
+    // (Stripe stellt Rechnungen erst ~1 h nach Periodenbeginn fertig) bleiben
+    // laut Testuhr nach dem Beenden zwar liegen, werden aber vorsorglich
+    // geloescht, damit sie nie fertiggestellt und eingezogen werden.
+    for await (const invoice of this.stripe.invoices.list({ subscription: subscriptionId, limit: 100 })) {
+      if (invoice.status === "draft") await this.stripe.invoices.del(invoice.id!);
+      else if (invoice.status === "open") await this.stripe.invoices.voidInvoice(invoice.id!);
     }
   }
 
diff --git a/src/lib/worker-jobs.ts b/src/lib/worker-jobs.ts
index ffeceda..d399e36 100644
--- a/src/lib/worker-jobs.ts
+++ b/src/lib/worker-jobs.ts
@@ -10,7 +10,7 @@
 import { audit, WORKER } from "./audit";
 import type { Db } from "./db";
 import { flushEmails } from "./email";
-import { ensureInstallmentSchedule, holdSchedulesInReview, settleInstallmentInvoice, stopCanceledInstallmentPlans } from "./installment-billing";
+import { eachBooking, ensureInstallmentSchedule, holdSchedulesInReview, settleInstallmentInvoice, stopCanceledInstallmentPlans } from "./installment-billing";
 import { applyCheckoutExpired, applyFirstPaymentFailed, type EventContext } from "./payment-events";
 import type { PaymentGateway } from "./payment-gateway";
 import { purgeRateLimits } from "./rate-limit";
@@ -112,13 +112,13 @@ export async function reconcileInstallmentInvoices(db: Db, gateway: PaymentGatew
     take: 50,
   });
   let settled = 0;
-  for (const booking of bookings) {
+  const failed = await eachBooking(bookings, "abgleichen", async (booking) => {
     const invoices = await gateway.listScheduleInvoices(booking.stripeScheduleId!);
     for (const invoice of invoices.filter((i) => i.status === "paid")) {
       if (await settleInstallmentInvoice(db, gateway, invoice, ctx, WORKER)) settled++;
     }
-  }
-  return { checked: bookings.length, settled };
+  });
+  return { checked: bookings.length, settled, failed };
 }
 
 /** Faengt verzoegerte erste Zahlungen (SEPA) auf, deren Ergebnis-Webhook ausblieb. */