Using a personal credit card for business usually doesn't create problems--unless you charge business expenses to the card and are not reimbursed. Some companies fail or file for bankruptcy while still owing expense reimbursements. In some instances the money is never paid, forcing the employee to personally pay business charges. Liability Personal credit cards can also be a problem when you own the business. Some entrepreneurs structure their businesses as separate legal entities responsible for their own debts. Theoretically the business...