You probably chose the option to pay the TurboTax account fees with the federal tax refund. The service charge for this option is $39.99
See this TurboTax support FAQ for removing the pay with refund fees - https://ttlc.intuit.com/community/downgrading/help/how-do-i-remove-pay-with-my-refund-fees-in-turbot...
Look at your fees. Click on Tax Tools on the left side of the screen. Click on Tools. Click on My Fees
