does it make sense to Refinance to pay off a home mortgage

[Henry Li]

Hi, 

  Since the tax reform, the primary home mortgage interest we pay is no longer a deduction. In this case I'm thinking maybe I should refinance an investment property to cash out the exact amount to pay off my primary residence. This would first consolidate the loans into one, and secondly the entire loan would have tax benefit. But I also heard of cashing out to pay for anything non investment related will disqualify the mortgage interest to be a deduction. Not sure how realistic this is though.. when you put in a deduction for an investment property when you do tax return, will IRS really check for what you did to the money you cashed out? looking for advices