Thank you for your question.
Your TurboTax Premier Desktop software will allow you to prepare and file 12 returns with an income of more than $25,000 and 8 returns with an income below $25,000; for a total of 20 returns.
If you would like to upgrade any of your 8 returns with an income below $25,000, you can use this link for the steps:
https://turbotax.community.intuit.ca/questions/1189885-purchase-additional-returns
