Once you have an idea of what you need, it will be easier to narrow down the options. Most software packages offer templates, but the software can be quite expensive. Templates can be purchased individually online, as well. But as a small business owner, you know that running a business is expensive, and you want to cut costs whenever you can. The Internet is filled with tools to help run your business, including free invoice templates.
It necessarily describes the kind of services offered and the price agreed for providing them. Usually, companies include their logo in the customer invoice template and, depending on the nature of business, they may mention the payment terms and the breakdown of goods or services offered.