diff --git a/backend/prisma/migrations/20260818100000_energy_no_bonus_desired/migration.sql b/backend/prisma/migrations/20260818100000_energy_no_bonus_desired/migration.sql
new file mode 100644
index 00000000..443c1e5b
--- /dev/null
+++ b/backend/prisma/migrations/20260818100000_energy_no_bonus_desired/migration.sql
@@ -0,0 +1,2 @@
+-- "Keine Bonis erwünscht": Kunde möchte bei diesem Energievertrag keine Bonis.
+ALTER TABLE `EnergyContractDetails` ADD COLUMN IF NOT EXISTS `noBonusDesired` BOOLEAN NOT NULL DEFAULT false;
diff --git a/backend/prisma/schema.prisma b/backend/prisma/schema.prisma
index 31cb08df..fe20d8ba 100644
--- a/backend/prisma/schema.prisma
+++ b/backend/prisma/schema.prisma
@@ -923,6 +923,7 @@ model EnergyContractDetails {
   // `instantBonus` (Annahme: meistgenutzte Variante).
   instantBonus           Float?    // Sofort-Bonus
   newCustomerBonus       Float?    // Neukunden-Bonus
+  noBonusDesired         Boolean   @default(false) // Kunde wünscht keine Bonis
   previousProviderName   String?
   previousCustomerNumber String?
   invoices               Invoice[] // Rechnungen
diff --git a/backend/src/services/contract.service.ts b/backend/src/services/contract.service.ts
index 823ed482..cba52348 100644
--- a/backend/src/services/contract.service.ts
+++ b/backend/src/services/contract.service.ts
@@ -255,6 +255,7 @@ interface ContractCreateData {
     unitPrice?: number;
     instantBonus?: number;
     newCustomerBonus?: number;
+    noBonusDesired?: boolean;
     previousProviderName?: string;
     previousCustomerNumber?: string;
   };
diff --git a/frontend/src/pages/contracts/ContractDetail.tsx b/frontend/src/pages/contracts/ContractDetail.tsx
index 229892aa..86f8b364 100644
--- a/frontend/src/pages/contracts/ContractDetail.tsx
+++ b/frontend/src/pages/contracts/ContractDetail.tsx
@@ -2825,6 +2825,12 @@ export default function ContractDetail() {
                 </div>
               ) : null;
             })()}
+            {c.energyDetails.noBonusDesired && (
+              <div>
+                <dt className="text-sm text-gray-500">Bonis</dt>
+                <dd className="text-orange-700 font-medium">Keine Bonis erwünscht</dd>
+              </div>
+            )}
             {c.energyDetails.annualConsumption ? (
               <div>
                 <dt className="text-sm text-gray-500">
diff --git a/frontend/src/pages/contracts/ContractForm.tsx b/frontend/src/pages/contracts/ContractForm.tsx
index 1f1d6124..079b5f03 100644
--- a/frontend/src/pages/contracts/ContractForm.tsx
+++ b/frontend/src/pages/contracts/ContractForm.tsx
@@ -356,6 +356,7 @@ export default function ContractForm() {
         unitPriceNt: c.energyDetails?.unitPriceNt || '',
         instantBonus: c.energyDetails?.instantBonus || '',
         newCustomerBonus: c.energyDetails?.newCustomerBonus || '',
+        noBonusDesired: c.energyDetails?.noBonusDesired || false,
         // Internet details
         downloadSpeed: c.internetDetails?.downloadSpeed || '',
         uploadSpeed: c.internetDetails?.uploadSpeed || '',
@@ -679,6 +680,7 @@ export default function ContractForm() {
         unitPriceNt: data.unitPriceNt ? parseFloat(data.unitPriceNt) : null,
         instantBonus: data.instantBonus ? parseFloat(data.instantBonus) : null,
         newCustomerBonus: data.newCustomerBonus ? parseFloat(data.newCustomerBonus) : null,
+        noBonusDesired: !!data.noBonusDesired,
       };
     }
 
@@ -1558,6 +1560,11 @@ export default function ContractForm() {
               <Input label="Neukunden-Bonus (€)" type="number" step="0.01" {...register('newCustomerBonus')} />
             </div>
 
+            <label className="flex items-center gap-2 mt-3">
+              <input type="checkbox" {...register('noBonusDesired')} className="rounded" />
+              <span className="text-sm text-gray-700">Keine Bonis erwünscht</span>
+            </label>
+
             {/* Hinweis für Zählerstände und Rechnungen */}
             {isEdit && (
               <div className="mt-4 p-3 bg-blue-50 border border-blue-200 rounded-lg text-sm text-blue-700">
diff --git a/frontend/src/types/index.ts b/frontend/src/types/index.ts
index fd5840dd..6fa449de 100644
--- a/frontend/src/types/index.ts
+++ b/frontend/src/types/index.ts
@@ -661,6 +661,7 @@ export interface EnergyContractDetails {
   unitPriceNt?: number;            // €/kWh NT-Preis (nur bei Zweitarifzähler)
   instantBonus?: number;           // Sofort-Bonus
   newCustomerBonus?: number;       // Neukunden-Bonus
+  noBonusDesired?: boolean;        // Kunde wünscht keine Bonis
   previousProviderName?: string;
   previousCustomerNumber?: string;
   invoices?: Invoice[];            // Rechnungen