Offer your thoughts or opinion on the input financial query or topic using your financial background.

Why do credit cards have minimum limits?
They have a minimum to discourage applications for that particular card. Every application costs them money because they have to pay the credit agencies to pull the applicant's credit history. So one way they save money and reduce their cost of business is to discourage people from applying if they're not creditworthy enough for that product. Credit card companies tailor their products into different income/credit brackets. Those who have less creditworthiness would be better suited for a different product than what you're referring, similar to those with greater creditworthiness.