diff --git a/webapp/src/components/molecules/MoleculeChanceAccountNumberModal.vue b/webapp/src/components/molecules/MoleculeChanceAccountNumberModal.vue
new file mode 100644
index 0000000..3b57ce9
--- /dev/null
+++ b/webapp/src/components/molecules/MoleculeChanceAccountNumberModal.vue
@@ -0,0 +1,84 @@
+<template>
+  <AtomModal
+    :id="id"
+    ref="modal"
+    :title="title"
+    @close="handleClose"
+  >
+    <div class="flex place-items-center justify-between">
+      <AtomInput
+        v-model="accountNumber"
+        class="w-4/12"
+        @keyup.esc="modal?.close()"
+      />
+    </div>
+    <template #action>
+      <label
+        class="btn gap-2"
+        :for="id"
+        @click="modal?.close()"
+      >
+        <XCircleIcon class="h-6 w-6" />
+        Abbrechen
+      </label>
+      <button
+        class="btn gap-2"
+        @click="handleSubmit()"
+      >
+        <CheckCircleIcon class="h-6 w-6" />
+        Speichern
+      </button>
+    </template>
+  </AtomModal>
+</template>
+
+<script lang="ts" setup>
+import { ref } from 'vue';
+import { CheckCircleIcon, XCircleIcon } from '@heroicons/vue/24/outline';
+import AtomModal from '../atoms/AtomModal.vue';
+import AtomInput from '../atoms/AtomInput.vue';
+
+const modal = ref<InstanceType<typeof AtomModal>>();
+const accountNumber = ref('');
+const accountId = ref('');
+
+defineProps({
+  id: {
+    type: String,
+    required: true,
+  },
+  title: {
+    type: String,
+    required: true,
+  },
+});
+
+const emit = defineEmits(['submit']);
+
+function handleClose() {
+  accountNumber.value = '';
+}
+
+function handleSubmit() {
+  if(!accountNumber.value) {
+    return;
+  }
+  emit('submit', {
+    id: accountId.value,
+    accountNumber: accountNumber.value,
+  });
+}
+
+defineExpose({
+  show: (id: string) => {
+    accountId.value = id;
+    modal.value?.show();
+  },
+  close: () => modal.value?.close(),
+  isOpen: () => modal.value?.isOpen(),
+});
+</script>
+
+<style lang="scss" scoped>
+
+</style>
\ No newline at end of file
diff --git a/webapp/src/components/molecules/MoleculeDataTable.vue b/webapp/src/components/molecules/MoleculeDataTable.vue
index 5505b9c..6d776a9 100644
--- a/webapp/src/components/molecules/MoleculeDataTable.vue
+++ b/webapp/src/components/molecules/MoleculeDataTable.vue
@@ -20,7 +20,7 @@
           <td
             v-for="header in tableHeaders"
             :class="{
-              'text-center': header.type == TableHeaderType.BUTTON_ACCOUNT,
+              'text-center': [TableHeaderType.BUTTON_ACCOUNT, TableHeaderType.BUTTON_CHANGE_ACCOUNT_NUMBER].includes(header.type),
             }"
           >
             <span v-if="header.type === TableHeaderType.STRING">
@@ -56,11 +56,27 @@
               :to="`/bank?accountNumber=${entry.accountNumber}`"
               class="btn-ghost btn-sm btn p-1"
             >
-              <CurrencyDollarIcon class="h-6 w-6" />
+              <div
+                class="tooltip normal-case"
+                data-tip="Transaktionen anzeigen"
+              >
+                <CurrencyDollarIcon class="h-6 w-6" />
+              </div>
             </RouterLink>
+            <span
+              v-if="header.type === TableHeaderType.BUTTON_CHANGE_ACCOUNT_NUMBER"
+              class="btn-ghost btn-sm btn p-1"
+            >
+              <div
+                class="tooltip normal-case"
+                data-tip="Kontonummer ändern"
+                @click="$emit('changeAccountNumber', entry.id)"
+              >
+                <CreditCardIcon class="h-6 w-6" />
+              </div>
+            </span>
             <span
               v-if="header.type === TableHeaderType.WAGE"
-              :for="contactModalId"
               class="flex items-center gap-2"
             >
               <div class="dropdown-bottom dropdown">
@@ -93,7 +109,7 @@ import { DateService } from '../../services/date.service';
 import { CurrencyService } from '../../services/currency.service';
 import { SettingsService } from '../../services/settings.service';
 import { Shifts } from '../../enums/shift.enum';
-import { ChevronDownIcon, CurrencyDollarIcon } from '@heroicons/vue/24/outline';
+import { ChevronDownIcon, CreditCardIcon, CurrencyDollarIcon } from '@heroicons/vue/24/outline';
 
 const settings = ref<SettingsResponse>();
 
@@ -108,11 +124,6 @@ defineProps({
     type: Array as PropType<any[]>,
     required: true,
   },
-  contactModalId: {
-    type: String,
-    required: false,
-    default: '',
-  },
   hideHeader: {
     type: Boolean,
     required: false,
@@ -128,6 +139,7 @@ defineEmits<{
   click: [id: string],
   selectShift: [{id: string, shift: Shifts}],
   selectWage: [{id: string, wageFactor: number}],
+  changeAccountNumber: [id: string],
 }>();
 
 function removeFocus() {
@@ -142,6 +154,7 @@ export enum TableHeaderType {
   CURRENCY,
   DATETIME,
   BUTTON_ACCOUNT,
+  BUTTON_CHANGE_ACCOUNT_NUMBER,
   WAGE,
   SHIFT,
 }
diff --git a/webapp/src/components/views/ViewData.vue b/webapp/src/components/views/ViewData.vue
index 1a8f0d9..9dd5025 100644
--- a/webapp/src/components/views/ViewData.vue
+++ b/webapp/src/components/views/ViewData.vue
@@ -10,16 +10,21 @@
       class="mb-4"
     />
     <MoleculeDataTable
-      v-if="accounts"
+      v-if="accounts && changeAccountNumberModal"
       :table-headers="tableHeaders"
       :data="accounts"
+      @change-account-number="changeAccountNumberModal.show($event);"
+    />
+    <MoleculeChanceAccountNumberModal
+      id="changeAccountNumber"
+      ref="changeAccountNumberModal"
+      title="Kontonummer ändern"
+      @submit="changeAccountNumber"
     />
   </div>
 </template>
 
 <script lang="ts" setup>
-// TODO: Add button in each row to change the accountNumber inside an modal
-
 import { onMounted, onUnmounted, ref, watch } from 'vue';
 import { useEventBus } from '@vueuse/core';
 import { UnsubscribeFunc } from 'pocketbase';
@@ -30,10 +35,12 @@ import { AuthService } from '../../services/auth.service';
 import AtomInput from '../atoms/AtomInput.vue';
 import MoleculeDataTable, { TableHeaderType } from '../molecules/MoleculeDataTable.vue';
 import MoleculeAuthDialog from '../molecules/MoleculeAuthDialog.vue';
+import MoleculeChanceAccountNumberModal from '../molecules/MoleculeChanceAccountNumberModal.vue';
 
 const isAdmin = ref(false);
 const accountsSubscription = ref<UnsubscribeFunc>();
 const transactionsSubscription = ref<UnsubscribeFunc>();
+const changeAccountNumberModal = ref<InstanceType<typeof MoleculeChanceAccountNumberModal>>();
 
 const accounts = ref<AccountsListResponse<number, string>[]>([]);
 const initAccounts = ref<AccountsListResponse<number, string>[]>([]);
@@ -69,6 +76,11 @@ const tableHeaders = [
     key: '',
     type: TableHeaderType.BUTTON_ACCOUNT,
   },
+  {
+    title: 'Knr. änd.',
+    key: '',
+    type: TableHeaderType.BUTTON_CHANGE_ACCOUNT_NUMBER,
+  },
 ];
 
 useEventBus<boolean>('isAdmin').on(state => {
@@ -99,6 +111,10 @@ function search(value: string) {
   }
 }
 
+function changeAccountNumber(account: {id: string, accountNumber: string}) {
+  AccountService.updateAccountNumber(account.id, account.accountNumber);
+}
+
 onMounted(async () => {
   isAdmin.value = AuthService.isAdmin();
   if(isAdmin.value) {
diff --git a/webapp/src/services/account.service.ts b/webapp/src/services/account.service.ts
index 5ee4aec..3ebab17 100644
--- a/webapp/src/services/account.service.ts
+++ b/webapp/src/services/account.service.ts
@@ -22,6 +22,9 @@ export class AccountService {
   public static async addAccount(account: AccountsRecord): Promise<AccountsResponse> {
     return COLLECTION.create(account, { $cancelKey: `${account.firstName}.${account.lastName}.${account.grade}` });
   }
+  public static async updateAccountNumber(accountId: string, accountNumber: string): Promise<AccountsResponse> {
+    return COLLECTION.update(accountId, { accountNumber });
+  }
   public static async updateShift(accountId: string, shift: string): Promise<AccountsResponse> {
     return COLLECTION.update(accountId, { shift });
   }