With Professional Edition you get:
Pay-as-you-go option perfect for a lower volume of specific types of returns, such as less than 32 individual 1040/State returns.
Unlimited individual bundle tailored for preparing more than 32 individual returns and a limited volume of business returns.
Unlimited bundle of tax and add-on solutions designed for an increased number of business returns and more than 32 individual returns.
A complete unlimited bundle of tax and add-on solutions built for a significant volume of individual and business returns.