what is the cost to file the federal return
Depends what version you are using. How to review your feeshttps://ttlc.intuit.com/community/charges-and-fees/help/how-do-i-review-my-fees-in-turbotax-online/00/26353
The fee to use TurboTax varies with the version of the software you use. And....fees for online increase on March 1.
ONLINE 2024
https://turbotax.intuit.com/personal-taxes/online/
If you use a paid version of the online software there are separate fees for federal and state returns.