diff --git a/db/enums.ts b/db/enums.ts
index 9456790..5868e48 100644
--- a/db/enums.ts
+++ b/db/enums.ts
@@ -20,6 +20,7 @@ export enum MILAGE_RATES {
   EXTERN_201_1000 = 'extern_201_1000_km',
   EXTERN_1001_2000 = 'extern_1001_2000_km',
   EXTERN_GTE_2001 = 'extern_gte_2001_km',
+  FREE_OF_CHARGE = 'free_of_charge',
 }
 
 const rates = {
@@ -31,6 +32,7 @@ const rates = {
   [MILAGE_RATES.EXTERN_201_1000]: 0.25,
   [MILAGE_RATES.EXTERN_1001_2000]: 0.2,
   [MILAGE_RATES.EXTERN_GTE_2001]: 0.18,
+  [MILAGE_RATES.FREE_OF_CHARGE]: 0,
 }
 
 export function getMilageRateValue(milageRate: MILAGE_RATES): number {
diff --git a/pages/booking/[uuid]/bill.tsx b/pages/booking/[uuid]/bill.tsx
index cc39703..c1a40e0 100644
--- a/pages/booking/[uuid]/bill.tsx
+++ b/pages/booking/[uuid]/bill.tsx
@@ -69,6 +69,8 @@ function getRateLabel(rate: MILAGE_RATES) {
       return 'Extern 1.001-2.000km'
     case MILAGE_RATES.EXTERN_GTE_2001:
       return 'Extern ab 2.001km'
+    case MILAGE_RATES.FREE_OF_CHARGE:
+      return 'Frei'
     default:
       return 'Keine'
   }