diff --git a/app/Http/Controllers/CreditController.php b/app/Http/Controllers/CreditController.php
index 74b46011fea4..4974cbb875fc 100644
--- a/app/Http/Controllers/CreditController.php
+++ b/app/Http/Controllers/CreditController.php
@@ -59,7 +59,7 @@ class CreditController extends BaseController
      * @OA\Get(
      *      path="/api/v1/credits",
      *      operationId="getCredits",
-     *      tags={"invoices"},
+     *      tags={"credits"},
      *      summary="Gets a list of credits",
      *      description="Lists credits, search and filters allow fine grained lists to be generated.
      *
diff --git a/app/Http/Controllers/ExpenseController.php b/app/Http/Controllers/ExpenseController.php
index c2c2fede38a8..9b7b74939a33 100644
--- a/app/Http/Controllers/ExpenseController.php
+++ b/app/Http/Controllers/ExpenseController.php
@@ -21,12 +21,14 @@ use App\Http\Requests\Expense\EditExpenseRequest;
 use App\Http\Requests\Expense\ShowExpenseRequest;
 use App\Http\Requests\Expense\StoreExpenseRequest;
 use App\Http\Requests\Expense\UpdateExpenseRequest;
+use App\Http\Requests\Expense\UploadExpenseRequest;
 use App\Models\Expense;
 use App\Repositories\ExpenseRepository;
 use App\Transformers\ExpenseTransformer;
 use App\Utils\Ninja;
 use App\Utils\Traits\BulkOptions;
 use App\Utils\Traits\MakesHash;
+use App\Utils\Traits\SavesDocuments;
 use App\Utils\Traits\Uploadable;
 use Illuminate\Http\Request;
 use Illuminate\Http\Response;
@@ -40,7 +42,8 @@ class ExpenseController extends BaseController
     use MakesHash;
     use Uploadable;
     use BulkOptions;
-
+    use SavesDocuments;
+    
     protected $entity_type = Expense::class;
 
     protected $entity_transformer = ExpenseTransformer::class;
@@ -507,4 +510,65 @@ class ExpenseController extends BaseController
     {
         //todo
     }
+
+    /**
+     * Update the specified resource in storage.
+     *
+     * @param UploadExpenseRequest $request
+     * @param Expense $expense
+     * @return Response
+     *
+     *
+     *
+     * @OA\Put(
+     *      path="/api/v1/expenses/{id}/upload",
+     *      operationId="uploadExpense",
+     *      tags={"expense"},
+     *      summary="Uploads a document to a expense",
+     *      description="Handles the uploading of a document to a expense",
+     *      @OA\Parameter(ref="#/components/parameters/X-Api-Secret"),
+     *      @OA\Parameter(ref="#/components/parameters/X-Api-Token"),
+     *      @OA\Parameter(ref="#/components/parameters/X-Requested-With"),
+     *      @OA\Parameter(ref="#/components/parameters/include"),
+     *      @OA\Parameter(
+     *          name="id",
+     *          in="path",
+     *          description="The Expense Hashed ID",
+     *          example="D2J234DFA",
+     *          required=true,
+     *          @OA\Schema(
+     *              type="string",
+     *              format="string",
+     *          ),
+     *      ),
+     *      @OA\Response(
+     *          response=200,
+     *          description="Returns the Expense object",
+     *          @OA\Header(header="X-MINIMUM-CLIENT-VERSION", ref="#/components/headers/X-MINIMUM-CLIENT-VERSION"),
+     *          @OA\Header(header="X-RateLimit-Remaining", ref="#/components/headers/X-RateLimit-Remaining"),
+     *          @OA\Header(header="X-RateLimit-Limit", ref="#/components/headers/X-RateLimit-Limit"),
+     *          @OA\JsonContent(ref="#/components/schemas/Expense"),
+     *       ),
+     *       @OA\Response(
+     *          response=422,
+     *          description="Validation error",
+     *          @OA\JsonContent(ref="#/components/schemas/ValidationError"),
+     *
+     *       ),
+     *       @OA\Response(
+     *           response="default",
+     *           description="Unexpected Error",
+     *           @OA\JsonContent(ref="#/components/schemas/Error"),
+     *       ),
+     *     )
+     */
+    public function upload(UploadExpenseRequest $request, Expense $expense)
+    {
+
+        if ($request->has('documents')) 
+            $this->saveDocuments($request->file('documents'), $expense);
+
+        return $this->itemResponse($expense->fresh());
+
+    }    
 }
diff --git a/app/Http/Requests/Expense/UploadExpenseRequest.php b/app/Http/Requests/Expense/UploadExpenseRequest.php
new file mode 100644
index 000000000000..e52c13a8050d
--- /dev/null
+++ b/app/Http/Requests/Expense/UploadExpenseRequest.php
@@ -0,0 +1,39 @@
+<?php
+/**
+ * Invoice Ninja (https://invoiceninja.com).
+ *
+ * @link https://github.com/invoiceninja/invoiceninja source repository
+ *
+ * @copyright Copyright (c) 2021. Invoice Ninja LLC (https://invoiceninja.com)
+ *
+ * @license https://opensource.org/licenses/AAL
+ */
+
+namespace App\Http\Requests\Expense;
+
+use App\Http\Requests\Request;
+
+class UploadExpenseRequest extends Request
+{
+    /**
+     * Determine if the user is authorized to make this request.
+     *
+     * @return bool
+     */
+    public function authorize() : bool
+    {
+        return auth()->user()->can('edit', $this->expense);
+    }
+
+    public function rules()
+    {
+
+    	$rules = [];
+
+		if($this->input('documents'))
+            $rules['documents'] = 'file|mimes:html,csv,png,ai,svg,jpeg,tiff,pdf,gif,psd,txt,doc,xls,ppt,xlsx,docx,pptx|max:2000000';
+
+    	return $rules;
+
+    }
+}
diff --git a/routes/api.php b/routes/api.php
index c54b9c6ffae3..ac70201cbacf 100644
--- a/routes/api.php
+++ b/routes/api.php
@@ -72,6 +72,7 @@ Route::group(['middleware' => ['api_db', 'token_auth', 'locale'], 'prefix' => 'a
     Route::post('recurring_quotes/bulk', 'RecurringQuoteController@bulk')->name('recurring_quotes.bulk');
 
     Route::resource('expenses', 'ExpenseController'); // name = (expenses. index / create / show / update / destroy / edit
+    Route::put('expenses/{expense}/upload', 'ExpenseController@upload'); 
 
     Route::post('expenses/bulk', 'ExpenseController@bulk')->name('expenses.bulk');