Getting started
If you are using TurboTax Desktop, additional returns with net income less than $25,000 are free. For returns with net income greater than $25,000, the cost is $20.00 per additional return. You can also buy an additional license and use Tools> License Code Switch to enter the second code.
And Aniqua is correct, you can only NETFILE 20 returns per year. You can prepare more returns, but they will need to be printed & mailed. This is true of all personal tax software that uses NETFILE.
