Hi there GStewart,
It's vital that you have the plan that best suits the needs of your business. QuickBooks Online is a great tool that has multiple plan options in order to have the best functions to help you manage your business. I can provide some information about bills.
As mentioned by Fiat Lux - ASIA, bills and their payments are available in the QuickBooks Online Essentials plan, as well as QuickBooks Online Plus or Advanced. If you'd like to upgrade to a higher subscription plan, you can do so by following the steps in this article.
If you have any other questions, feel free to reach out here.