But the monthly loan payments need to be made somehow, no matter what you use the loan for. If you pay them with income, you paid income tax. If you pay them

But the monthly loan payments need to be made somehow, no matter what you use the loan for. If you pay them with income, you paid income tax. If you pay them by liquidating assets (including assets you purchased with the loan money and then sold), you pay capital gains tax (unless you sell for a loss).