Here are my responses:
1. You don't need to do anything with your Form 5498. Keep it for your records. See What do I do with Form 5498?
2 . If you are using TurboTax CD\Download, yes, you can switch to TurboTax Premier.
- If you are using TurboTax Online, yes, you can switch to Premier as long as you don't have any business carryover amounts, i.e. depreciation or vehicles. Note: When you transfer your .tax2017 file to 2018, your Schedule C information will transfer over so you'll need to delete it and all the related data. Otherwise, start a 2018 new tax return without transferring your .tax2017 file.
3. There is nothing you need to do for your SEP-IRA in 2018 or future years.
Related information:
