I bought a second home, but when I interred the info and the interest paid on the loan into turbo tax my tax return amount never changed

[gen1061233]

Why can't I clam my interest paid on my mortgage

[KrisD15]

It might be allowing the interest, but unless you Itemize Deductions (rather than taking the Standard Deduction) the interest won't matter.

Look at schedule A 

To View
For TurboTax Desktop, switch to Forms (top right) 

TurboTax Online:
Select Tax Tools on the left side-bar
Select Tools from that drop-down
Select “View Tax Summary” on the TOOLS CENTER screen
Select “Preview my 1040” which now appears on the left side-bar

look at schedule A