Used HELOC from Main house to buy first rental property.

[Eric Yu]

Hello BP community!

I recently used HELOC from my residence to purchase a rental house. Seller accept offer at 10/20, but it looks closing date will after 1/1/2019. Obviously, HELOC interest start from Nov., there are 2 month interest generated in 2018.

1. Can I use interest as a tax deduction on my personal tax return?

2. If not then how can I write off Heloc interesting from 2018 tax return?