I refinanced my house in 2020 (principal < $750k, purchased before 12/15/2017, no cash out when refinanced). When I entered the 1098 received for 2021, I found I owned $4k more federal tax when I select Yes for "Is this loan a home equity line of credit or a refinance of a previous loan" than selecting No for the question.
I am married filling separately by the way.
More specifically, I answered No for "Is this the original loan you used to buy your property", Yes for "Is this loan a home equity line of credit or a refinance of a previous loan" and No for "Did you take cash out when you got this loan"。
That sounds like I got some penalty when refinancing my house. Did I get it wrong?