You should never get a business credit card if you can't manage debt, as they often have higher interest rates, fewer consumer protections (like extended warranties), and can complicate taxes or reconciliation, potentially leading to overspending, personal liability if misused, and difficulty building personal credit. Key risks include racking up expensive interest, blurring personal/business finances, and missing out on the robust benefits of personal cards, making them unsuitable for risky investments or just paying for everything, say sources.