For small to medium sized companies the procedures behind the way they conduct business is more intimate due to the fact that they are dealing with smaller clients. The first thought that should come to mind is to reduce the sticker shock they receive if you send them monthly invoices. You should help manage their expectations and avoid invoicing a client immediately. What happens to the client in this situation is that they could become frightened and uncomfortable due to the fact that an entire project can be mounted on top of them all at once. Under certain circumstances the vendor can find themselves in heated discussions where they must justify the work they’ve provided in order to rationalize the costs associated with the project.
The best technique to practice in order to avoid any problems when dealing with clients would be to have a set schedule/plan that would allow for sufficient time between invoices. A client is more likely to look at the costs rather than what services a company has provided for them at first glance. A company must develop a rhythm for invoicing that would allow the clients enough clients to take in the full picture of the services provided and the costs that follow them.
Depending on the size of your invoices and the ability for your clients to handle them within their budget, you’ll want to find the perfect “sweet spot” for choosing your frequency. In most cases this will fall between two and four weeks but just determine what feels right for you and tweak it until you find the right balance.