The credit card issuers generally decide for you your credit limit by looking at your credit score and your income more than the type of card you're applying for. For this reason, the biggest factor in getting a high limit on your credit card is you. I bet you if you have established a high credit score plus you have a proven high income, if you contact your credit card company to improve your limits, they will be willing to consider. In general, it's not uncommon to hear of people getting credit cards with higher limits, such as $20,000 or more, on a single card. Some high-limit credit cards may offer as much as $50,000 as you have seen above. High-limit credit cards tend to be those geared toward people with excellent credit and high incomes.