@GoodTaxTimes
You are correct, the carryforward of the origination date is imperative because as you know, once the loan is refinanced, and if you combine a home equity loan, the mortgage interest from the new loan isn’t tax deductible. Only the loan amount when you originally acquired the property remains deductible.
https://www.irs.gov/publications/p936
In order to keep this clear and to prevent amounts from being added together when multiple 1098s are entered, this TurboTax article is particularly helpful in explaining.
