Before you retire you should request higher limits on your credit cards. Consider whether your current limits are enough if you plan expensive travel. When you try to increase your credit limit online or with phone reps, all they ask for is income. You can waste a lot of time with an employee who can only provide boilerplate answers and doesn’t understand that you will pay your bills not out of income but by tapping retirement accounts. So, even if you think your credit limits are sufficient, it wouldn't hurt to increase them while you are still fully employed.