diff --git a/app/Api/V1/Controllers/Data/Bulk/AccountController.php b/app/Api/V1/Controllers/Data/Bulk/AccountController.php
new file mode 100644
index 0000000000..ec64b3b1bd
--- /dev/null
+++ b/app/Api/V1/Controllers/Data/Bulk/AccountController.php
@@ -0,0 +1,70 @@
+<?php
+/*
+ * AccountController.php
+ * Copyright (c) 2021 james@firefly-iii.org
+ *
+ * This file is part of Firefly III (https://github.com/firefly-iii).
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+namespace FireflyIII\Api\V1\Controllers\Data\Bulk;
+
+
+use FireflyIII\Api\V1\Controllers\Controller;
+use FireflyIII\Api\V1\Requests\Data\Bulk\MoveTransactionsRequest;
+use FireflyIII\Repositories\Account\AccountRepositoryInterface;
+use FireflyIII\Services\Internal\Destroy\AccountDestroyService;
+use Illuminate\Http\JsonResponse;
+
+/**
+ * Class AccountController
+ */
+class AccountController extends Controller
+{
+    private AccountRepositoryInterface $repository;
+
+    public function __construct()
+    {
+        parent::__construct();
+        $this->middleware(
+            function ($request, $next) {
+                $this->repository = app(AccountRepositoryInterface::class);
+                $this->repository->setUser(auth()->user());
+
+                return $next($request);
+            }
+        );
+    }
+
+    /**
+     * @param MoveTransactionsRequest $request
+     *
+     * @return JsonResponse
+     */
+    public function moveTransactions(MoveTransactionsRequest $request): JsonResponse
+    {
+        $accountIds  = $request->getAll();
+        $original    = $this->repository->findNull($accountIds['original_account']);
+        $destination = $this->repository->findNull($accountIds['destination_account']);
+
+        /** @var AccountDestroyService $service */
+        $service = app(AccountDestroyService::class);
+        $service->moveTransactions($original, $destination);
+
+        return response()->json([], 204);
+
+    }
+
+}
\ No newline at end of file
diff --git a/app/Api/V1/Requests/Data/Bulk/MoveTransactionsRequest.php b/app/Api/V1/Requests/Data/Bulk/MoveTransactionsRequest.php
new file mode 100644
index 0000000000..60da62d1b2
--- /dev/null
+++ b/app/Api/V1/Requests/Data/Bulk/MoveTransactionsRequest.php
@@ -0,0 +1,104 @@
+<?php
+/*
+ * MoveTransactionsRequest.php
+ * Copyright (c) 2021 james@firefly-iii.org
+ *
+ * This file is part of Firefly III (https://github.com/firefly-iii).
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+namespace FireflyIII\Api\V1\Requests\Data\Bulk;
+
+use FireflyIII\Repositories\Account\AccountRepositoryInterface;
+use FireflyIII\Support\Request\ChecksLogin;
+use FireflyIII\Support\Request\ConvertsDataTypes;
+use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Validation\Validator;
+
+/**
+ * Class MoveTransactionsRequest
+ */
+class MoveTransactionsRequest extends FormRequest
+{
+    use ChecksLogin, ConvertsDataTypes;
+
+    /**
+     * @return array
+     */
+    public function getAll(): array
+    {
+        return [
+            'original_account'    => $this->integer('original_account'),
+            'destination_account' => $this->integer('destination_account'),
+        ];
+    }
+
+    /**
+     * @return string[]
+     */
+    public function rules(): array
+    {
+        return [
+            'original_account'    => 'required|different:destination_account|belongsToUser:accounts,id',
+            'destination_account' => 'required|different:original_account|belongsToUser:accounts,id',
+        ];
+    }
+
+    /**
+     * Configure the validator instance with special rules for after the basic validation rules.
+     *
+     * @param Validator $validator
+     *                            TODO duplicate code.
+     *
+     * @return void
+     */
+    public function withValidator(Validator $validator): void
+    {
+        $validator->after(
+            function (Validator $validator) {
+                // validate start before end only if both are there.
+                $data = $validator->getData();
+                if (array_key_exists('original_account', $data) && array_key_exists('destination_account', $data)) {
+                    $repository = app(AccountRepositoryInterface::class);
+                    $repository->setUser(auth()->user());
+                    $original    = $repository->findNull((int)$data['original_account']);
+                    $destination = $repository->findNull((int)$data['destination_account']);
+                    if ($original->accountType->type !== $destination->accountType->type) {
+                        $validator->errors()->add('title', (string)trans('validation.same_account_type'));
+
+                        return;
+                    }
+                    // get currency pref:
+                    $originalCurrency    = $repository->getAccountCurrency($original);
+                    $destinationCurrency = $repository->getAccountCurrency($destination);
+                    if (null === $originalCurrency xor null === $destinationCurrency) {
+                        $validator->errors()->add('title', (string)trans('validation.same_account_currency'));
+
+                        return;
+                    }
+                    if (null === $originalCurrency && null === $destinationCurrency) {
+                        // this is OK
+                        return;
+                    }
+                    if ($originalCurrency->code !== $destinationCurrency->code) {
+                        $validator->errors()->add('title', (string)trans('validation.same_account_currency'));
+
+                        return;
+                    }
+                }
+            }
+        );
+    }
+}
\ No newline at end of file
diff --git a/app/Services/Internal/Destroy/AccountDestroyService.php b/app/Services/Internal/Destroy/AccountDestroyService.php
index a23d4f39f3..27b68eb942 100644
--- a/app/Services/Internal/Destroy/AccountDestroyService.php
+++ b/app/Services/Internal/Destroy/AccountDestroyService.php
@@ -115,7 +115,7 @@ class AccountDestroyService
      * @param Account $account
      * @param Account $moveTo
      */
-    private function moveTransactions(Account $account, Account $moveTo): void
+    public function moveTransactions(Account $account, Account $moveTo): void
     {
         DB::table('transactions')->where('account_id', $account->id)->update(['account_id' => $moveTo->id]);
     }
diff --git a/resources/lang/en_US/validation.php b/resources/lang/en_US/validation.php
index 2c1743da08..48540ee6fe 100644
--- a/resources/lang/en_US/validation.php
+++ b/resources/lang/en_US/validation.php
@@ -134,6 +134,8 @@ return [
     'starts_with'                    => 'The value must start with :values.',
     'unique_webhook'                 => 'You already have a webhook with these values.',
     'unique_existing_webhook'        => 'You already have another webhook with these values.',
+    'same_account_type'              => 'Both accounts must be of the same account type',
+    'same_account_currency'          => 'Both accounts must have the same currency setting',
 
     'secure_password'             => 'This is not a secure password. Please try again. For more information, visit https://bit.ly/FF3-password-security',
     'valid_recurrence_rep_type'   => 'Invalid repetition type for recurring transactions.',
diff --git a/routes/api.php b/routes/api.php
index ebea292f15..0de13d2954 100644
--- a/routes/api.php
+++ b/routes/api.php
@@ -90,6 +90,15 @@ Route::group(
     }
 );
 
+// Bulk update Account routes
+Route::group(
+    ['namespace' => 'FireflyIII\Api\V1\Controllers\Data\Bulk', 'prefix' => 'data/bulk/accounts',
+     'as'        => 'api.v1.data.bulk.',],
+    static function () {
+        Route::post('transactions', ['uses' => 'AccountController@moveTransactions', 'as' => 'accounts.move-transactions']);
+    }
+);
+
 /**
  * INSIGHTS ROUTES
  */