Should I take a personal loan to invest in stocks or crypto?

The math problem: Personal loan at 12% APR. To break even (not lose money), your investment must return at least 12% annually. After-tax investment returns must exceed 12%, meaning pre-tax returns need to be even higher. The U.S. stock market (S&P 500) averages 7%-10% annually over long periods - below the 12% borrowing cost. In any given year, the market may return -20% to +30%. A -20% market year plus 12% interest cost = -32% net loss on your invested capital.

The crypto risk: Cryptocurrency has no earnings, dividends, or intrinsic value floor. It can lose 50%-80% of value in a single year (as it did in 2022). Borrowing $10,000 at 15% APR to buy Bitcoin, which then falls 60%, leaves you with $4,000 of crypto and $10,000 + interest in debt. This is a catastrophic outcome.

When leverage works (and why it still does not apply here): Professional investors use leverage selectively and manage risk actively. They have access to much cheaper borrowing (margin rates of 6%-9% vs personal loan rates of 10%-25%). They can write off interest as a business expense. Their investment time horizons are managed actively. A retail investor with a personal loan at 15% APR borrowing to buy stocks has: higher borrowing cost, no tax deductibility, and fixed monthly payments regardless of market performance.

If you have investable cash: If you are considering borrowing to invest, reconsider whether existing savings could be deployed instead. The comparison should be: 'I have $10,000 in savings; should I invest it or pay down my 12% personal loan?' Not 'should I borrow $10,000 at 12% to invest?'