Accurate line items are a crucial component of any invoice. They provide a breakdown of the goods or services provided, their quantities, and their prices. With accurate line items, you can ensure transparency in your billing process and maintain a positive relationship with your clients. However, knowing when to add these line items can be a challenge. In this article, we will explore the importance of accurate line items, discuss the timing considerations for different types of businesses, highlight common mistakes to avoid, and provide best practices for adding line items that will benefit both your business and your clients.