@Opus 17 wrote:
Also, if you are only filing 2020 tax returns now, you will want to use the IRS free file version of Turbotax for your son. His income qualifies for free filing, but the standard turbotax "free to start" will up-charge to include the self-employment income.
https://freefile.intuit.com
Also forgot to mention, all versions of Turbotax Online will be taken down after the filing deadline of October 15, 2021 at midnight. After that date, you will have 5 days to re-transmit a return that was rejected by the IRS, but you can't file a new return. If you miss the Oct 15 deadline, your only option will be to purchase the CD or downloaded software to run on your own computer.
