Your *2017* contribution made in 2018 should be on a 2017 8606 line 1 with any other before 2017 contribution on line 2 and the total on lines 3 and 14. Line 14 from the 2017 8606 is what carries to 2018.
When you enter that in the 1099-R interview for prior year contributions it will go on line 2 of a new 2018 8606 form.
Your *2018* contribution that you made in 2018 for 2018 should already be on line 1 of that 8606 form form when you entered the contribution in the IRA contribution section. The total of the 2017 (line1) and 2018 (line 2) contributions should be on line 3 that will be used to offset the tax on lines 6-18.
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
