Home Mortgage Interest Deduction

[bobreynolds3pin]

I bought my home in 2016 with a $950k mortgage and filed joint married. I deducted all interest paid in 2016. 

In 2018 my wife passed away. I filed joint in 2018 and deducted all interest paid in 2018.

For 2109, I am filing as single (widowed), I refinanced my home in mid 2019 and have an average mortgage for 2019 of $788k. 

Turbotax wants my to calculate an "adjusted" interest. What do I use as the mortgage limit ($1M, $750K, or $375k?)   The software does not accept my using the $1M limit.

[NCperson]

take a look at publication 936, and the worksheet on page 11

https://www.irs.gov/pub/irs-pdf/p936.pdf

should be a limit of $750,000...... the limit is only cut in half for married-separate filings, which is not your situation.