@miner_house - it is rather easy to calculate.
1) take the balance just prior to the cash out refi (i.e. the amount you paid off on the old mortgage) times the interest rate on the new mortage times the number of days the new mortgage was outstanding during the year divided by 365. THAT is deductible as it is the 'aquisition debt'.
2) the remainder is not tax deductible.
Same formula each year going forward. The not tax deductible amount will drop every year.
I am assuming the new mortgage amount is below $750,000. I also assume this is was on your personal residence. I also am assuming you did not do a cash-out refinance any other time you owned this home.
