The interest accrued on the loan amount availed by the business owner to run and expand business activities is known as the business loan interest rate. No, the principal amount doesn't form the income part of the business. Only the interest paid on a business loan is a tax-deductible expense.
Buying a business can either be in the way of investment or meant to support another business enterprise. If the business bought is used to run the business actively, then the interest on the loan amount will be tax-deductible. However, if you do not intend to keep the business operational, the interest amount will not be tax-deductible.
When a business or individual decides to refinance a credit obligation, they wish to make revisions in their interest rate, payment schedule or any other term in the contract. Refinancing can help save money in the long term, but if the money of the second loan is used to pay back the first lender, it won't be considered a business expense, and the interest paid for the first loan will not be tax-deductible. However, the interest paid back on the second loan will be tax-deductible.