I paid interest on my mortgage in 2007 and listed the amount, but now taxact is asking this on the next page (see below). I don't know how I'm supposed to answer. I didn't do any construction or improvements to my home last year so do I put all my interest in the top option? What does it mean buy home? Thanks so much for any help. :)
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You have indicated home mortgage interest reported on Form 1098. If the entire interest was used to buy, build, or improve your home, check the applicable box; otherwise, enter the amount that was used for purposes other than buying, building, or substantially improving your main home or a qualifying second home.

Mortgage interest not used to buy, build or improve home:

Check if entire mortgage interest was used to buy, build, or improve home:

You listed the mortgage interest that you paid when you bought or built your house. What they are talking about on the second line is second mortgages or home equity loans. Money that you could have spent on other things other than your home, such as vacations, autos, or just to have cash in your pocket.