Companies can choose to bill their customers in a few different ways. The main billing methods are hourly, monthly, and project-based.

​Hourly billing is exactly what it sounds like – you are billed for the number of hours you work on a project. This is the most common billing method for consultants and other service providers.

​Monthly billing means you are billed once a month, regardless of how many hours you work. This is for retainers and other ongoing projects.

​Project-based billing means that you are billed for the completion of a project. This is for one-time projects or projects with a set scope and timeline.

​Billing methods can vary depending on the type of work being done and the agreement between the company and the client. The most important thing is to make sure that both parties are clear on the billing method before work begins.