Accounting Templates

Sales Invoice: Definition, Importance, and Free Downloadable Template

Last updated Wednesday, June 5, 2024
Sales Invoice

As a business owner, issuing sales invoices is an essential part of the sales process, but you may not be entirely sure of what they entail or why they are important. In this article, we will define sales invoices, explain their significance, and provide a free downloadable template to help you create your own.

What is a Sales Invoice?

A sales invoice is a document issued by a business to a customer that provides a detailed account of a sale transaction.

It includes information such as the goods or services sold, their prices.. etc. It serves as proof of purchase for the buyer and as a record of the transaction for both parties.

Download our free Sales Invoice Template

Click here to download

What Information Should a Sales Invoice Contain?

A sales invoice should contain specific information required by industry standards. Some of the essential details that should be included in a sales invoice are:

  • The word "invoice" is prominently displayed
  • The seller's name, address, and contact information
  • The buyer's name and address
  • A unique invoice number
  • The date of the transaction
  • A description of the goods or services provided
  • The quantity and unit price of the goods or services
  • The total amount charged
  • The payment terms and methods
  • Any other relevant information, such as shipping costs or terms of sale

Why is a Sales Invoice Important?

A sales invoice is an essential document for both the seller and the buyer for several reasons:

Record-Keeping: A sales invoice serves as a record of the transaction, which is essential for both the seller and the buyer. The seller can use it for accounting and inventory purposes, while the buyer can use it for tracking their purchases and managing their expenses.

Legal Protection: In case of any dispute or misunderstanding, a sales invoice can serve as evidence of the terms of the transaction. It helps to avoid confusion and resolve disputes quickly.

Payment Tracking: A sales invoice helps the seller track payments and follow up on any outstanding balances. It can also help the buyer ensure they have paid the correct amount and avoid potential issues.

Dispute Resolution: In case of any dispute or misunderstanding, a sales invoice can serve as evidence of the terms of the transaction. It helps to avoid confusion and resolve disputes quickly.

Payment Confirmation: A sales invoice is used to confirm that payment has been made or is due. It includes details such as the payment terms, the due date, and the amount paid or outstanding.

Professionalism: Issuing a sales invoice shows professionalism and reliability. It reassures the customer that they are dealing with a legitimate business taking its financial obligations seriously.

How to Create a Sales Invoice

Creating a sales invoice is straightforward, especially if you have a template to work with. To create your own sales invoice, follow these simple steps:

  • Download our free sales invoice template or create your own using a spreadsheet or word processing program.
  • Add your business name, address, and contact information to the top of the invoice.
  • Add the customer's name and address, as well as a unique invoice number and the date of the transaction.
  • Add the shipping company's name and contact information.
  • Include a description of the goods or services provided, the quantity, and the unit price.
  • Calculate the total amount charged
  • Add the payment terms and methods, as well as any other relevant information.
  • Review the invoice to ensure that all the required information is included and that it is accurate and easy to read.

Learn more about Creating and sending an invoice using Wafeq.

Watch a step by step video on how to create invoice in Wafeq:


Sales invoices play a crucial role in conducting business as they serve as concrete evidence of the transaction between two parties. The document includes essential information such as the type of goods or services provided, their price, sales tax, and other relevant details.

To facilitate the process of creating professional sales invoices, we offer a free downloadable sales invoice template in Wafeq that can be easily customized to meet your specific requirements. download our free template today to start generating Professional sales invoices.

For more advanced options and to run your business better, sign up now for Wafeq - Accounting software to track your expenses, and bills, run payroll, manage your inventory, and create more than 30 financial reports with just a single click.