A Cash Invoice is a critical business document used in Qatar for transactions where immediate payment is made for goods or services. This document type is essential for compliance with Qatar's commercial laws and tax regulations, particularly Law No. 18 of 2017 (Income Tax Law) and Law No. 27 of 2019 (VAT Law). The Cash Invoice must be issued at the time of payment and serves multiple purposes: it acts as proof of purchase, supports tax compliance, enables business record-keeping, and provides customer protection. In Qatar's business environment, cash invoices must be bilingual (Arabic and English) and include specific details such as the seller's commercial registration number, tax identification information, and complete transaction details. This document is particularly important for businesses handling cash transactions and needs to be retained for at least 10 years as per local regulations.

1. Invoice Header: Company details including name, commercial registration number, and VAT registration number if applicable

2. Invoice Number and Date: Unique invoice identifier and date of issue

3. Customer Information: Basic details of the customer including name and contact information

4. Item Details: Detailed list of goods/services with quantities and unit prices

5. Calculation Section: Subtotal, VAT calculation (if applicable), and total amount

6. Payment Information: Confirmation of cash payment received

7. Legal Statement: Standard statement confirming this is a valid cash invoice under Qatar law