Interest Only Mortgage Investment Can Land Investment Mortgage Interest Be Tax Deductible On Form 1040 Sch A If There Is No Investment Income?

Can land investment mortgage interest be tax deductible on Form 1040 Sch A if there is no investment income? - interest only mortgage investment

I think facilities and land for investment and I wonder if you could deduct mortgage interest expenses, while I did not do their income on Schedule A of Form 1040 shares at?
Can I collect all interest and costs prior mortgage, to sell the goods of the earth?