Get your taxes done using TurboTax

@GSD77 Just off the cuff then 930/1100 = 0.85

The deductible portion of the interest paid after refinance is 85%, and before the refinance is 100%.

Still working my way through Pub 936 on calculating Avg. Balances though...  I suppose since the Avg. Balance will be lower than 1,1m, that method might yield a higher deduction

Thanks again