@rvijayc
I am in similar situation as yours and I am not tax expert but I believe I found solution to this in Pub 936.
Search for " Interest paid divided by interest rate method" for calculating average balance of each mortgage in Pub 936.
This seems to work great for me.
@zomboo
Pls let me know if you disagree with " Interest paid divided by interest rate method" for calculating average balance of each mortgage in Pub 936 for any reason.
