If you have desktop software (CD/download) you can prepare multiple returns. You get up to five free federal e-files. If you prepare a state return there is a fee to e-file the state but you can avoid the fee if you print and mail the state instead of e-filing it.
Any version of desktop software has all the forms and schedules. It will be fine for your sister's return.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
