Can I deduct additional debt after refinancing?

[markjbowman]

I refinanced a home mortgage in 2017 after a divorce in that same year. When I refinanced I added some debt, however, a large portion of it was a pool loan. Can I add the pool loan amount (remainder) to the original mortgage for interest deduction?

[DDollar]

You can deduct the interest that is from the old loan, and the amount that was added that you used for the pool.  Any of interest on the debt that was not used to improve or purchase the home is not deductible.