How to Create a Professional Invoice: Complete Guide 2024

Creating a professional invoice is essential for any business. This guide explains everything you need to know to generate compliant and professional invoices.

10/02/2026

Mandatory elements of an invoice

An invoice must contain certain information to be valid. Here is the complete list of mandatory mentions:

  • Invoice number (unique and sequential)
  • Invoice issue date
  • Complete contact details of the issuing company (name, address, tax ID, VAT if applicable)
  • Client contact details (name, address)
  • Details of services or products with unit price, quantity and total

Structure of a professional invoice

A well-structured invoice facilitates understanding and processing by your client. Here are the elements to include:

Recommended elements:

  • Header with your company logo
  • Invoice number and date clearly visible
  • Detailed table of services
  • HT, VAT and TTC totals clearly highlighted

Invoice example

Here is a concrete example of a professional invoice:

Invoice example

Number: FACT-2024-001

Date: 10/02/2026

Client: ABC Company

Total HT: 1 200,00 € HT

Practical tips

To create effective and professional invoices, follow these tips:

Sequential numbering

Use continuous numbering without interruption to facilitate accounting tracking.

Retention

Keep your invoices for 10 years (legal requirement).

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