rental refi loan costs

I paid $500 in late 2020 as an application fee to refinance a rental property. The loan will not close until January 2021. I had planned to amortize all points and refi fees over the 15-year loan life on this year's return if the loan had closed in 2020. Do I amortize the $500 on this year's return, or do I put it into some temporary asset account? Thanks