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tax deduction for 30k loan
The loan itself is not tax deductible; unless you took it as part of a mortgage, anyway, it's just a regular loan.  Mortgage and Student Loan Interest deductions are special cases explicitly given tax-deductible status; other loans are not deductible (unless part of a business expense or other qualifying reason). If this were a short sale (which you note it was not but included for completeness' sake), and some of your debt was cancelled, that may have tax implications.  You cannot take a capital loss on your personal residence, so the loss itself is not deductible.