Sorry no. You can not get more efiles by installing another program. 5 is an IRS limit. If you need to efile more you have to buy Intuit Products for Tax Professionals https://taxpro.intuit.com and sign up with the IRS as an ERO - an Electronic Returns Originator. How to become an Authorized E-file Provider…..
http://www.irs.gov/Tax-Professionals/e-File-Providers-&-Partners/Become-an-Authorized-e-file-Provide...
Yes you can transfer all prior year returns into the next year. All you need is the .tax2020 file to transfer into 2021.
And be sure to save each return with a unique name so it doesn’t get confused with another return. Go to File-Save or Save As. Because if you do another return and they have the same first name or initial as you their return might save over yours.
