Tax year: 2018. My minor son was self-employed and I have to file for him. Plus I have to do my own. What is cheapest filing solution?

[Anonymous_]

TurboTax Home & Business from Amazon ($89.99 at the moment):

https://www.amazon.com/TurboTax-Business-Software-Download-Exclusive/dp/B07KR2DYG7/ref=sr_1_1?keywor...

Note that this is a desktop (installed version) of TurboTax.

[Critter]

For either of you if you qualify ...  https://www.irs.gov/filing/free-file-do-your-federal-taxes-for-free