diff --git a/openapi/components/schemas/expense.yaml b/openapi/components/schemas/expense.yaml
index 5801a73287b1..ac7d9df54cf7 100644
--- a/openapi/components/schemas/expense.yaml
+++ b/openapi/components/schemas/expense.yaml
@@ -3,27 +3,31 @@
         id:
           description: 'The expense hashed id'
           type: string
-          example: Opnel5aKBz
+          example: 'Opnel5aKBz'
         user_id:
           description: 'The user hashed id'
           type: string
-          example: ''
+          example: 'Opnel5aKBz'
         assigned_user_id:
           description: 'The assigned user hashed id'
           type: string
-          example: ''
+          example: 'Opnel5aKBz'
+        project_id:
+          description: 'The associated project_id'
+          type: string
+          example: 'Opnel5aKBz'  
         company_id:
           description: 'The company hashed id'
           type: string
-          example: ''
+          example: 'Opnel5aKBz'
         client_id:
           description: 'The client hashed id'
           type: string
-          example: ''
+          example: 'Opnel5aKBz'
         invoice_id:
           description: 'The related invoice hashed id'
           type: string
-          example: ''
+          example: 'Opnel5aKBz'
         bank_id:
           description: 'The bank id related to this expense'
           type: string
@@ -31,15 +35,15 @@
         invoice_currency_id:
           description: 'The currency id of the related invoice'
           type: string
-          example: ''
+          example: '1'
         expense_currency_id:
           description: 'The currency id of the expense'
           type: string
-          example: ''
+          example: '2'
         invoice_category_id:
           description: 'The invoice category id'
           type: string
-          example: ''
+          example: 'Opnel5aKBz'
         payment_type_id:
           description: 'The payment type id'
           type: string
@@ -47,7 +51,7 @@
         recurring_expense_id:
           description: 'The related recurring expense this expense was created from'
           type: string
-          example: ''
+          example: 'Opnel5aKBz'
         private_notes:
           description: 'The private notes of the expense'
           type: string
@@ -80,30 +84,34 @@
           description: 'A custom value'
           type: string
           example: ''
+        tax_amount:
+          description: 'The tax amount'
+          type: number
+          example: 10.00
         tax_name1:
-          description: 'Tax name'
+          description: 'Tax Name 1'
           type: string
-          example: ''
+          example: 'GST'
         tax_name2:
-          description: 'Tax name'
+          description: 'Tax Name 2'
           type: string
-          example: ''
+          example: 'VAT'
+        tax_name3:
+          description: 'Tax Name 3'
+          type: string
+          example: 'IVA'
         tax_rate1:
-          description: 'Tax rate'
+          description: 'Tax rate 1'
           type: number
           format: float
           example: '10.00'
         tax_rate2:
-          description: 'Tax rate'
+          description: 'Tax rate 2'
           type: number
           format: float
           example: '10.00'
-        tax_name3:
-          description: 'Tax name'
-          type: string
-          example: ''
         tax_rate3:
-          description: 'Tax rate'
+          description: 'Tax rate 3'
           type: number
           format: float
           example: '10.00'
@@ -123,13 +131,13 @@
           format: float
           example: '0.80'
         date:
-          description: 'The expense date formate Y-m-d'
+          description: 'The expense date format Y-m-d'
           type: string
           example: '2022-12-01'
         payment_date:
           description: 'The date of payment for the expense, format Y-m-d'
           type: string
-          example: ''
+          example: '2022-12-01'
         should_be_invoiced:
           description: 'Flag whether the expense should be invoiced'
           type: boolean