Issues getting credit increase
I am a relatively high earning young career professional. I have a doctorate with about $300k in student loans unfortunately, but a clear plan to pay them off in the coming years as I am expecting a large income increase in the next few years. My gross income is currently about $98K and will hopefully double in about a year if not go to a higher amount than that. I have had a discover it card for about 9 years now and have had a credit limit around only $5k for at least 3 years now. I have applied for a credit line increase about every year with them and have been denied each time. This has been somewhat of an issue because my credit utilization is around 80-90% most months. It seems like this is to the point where that is brining down my credit score because my utilization percent is high. I pay my total balance each month, have never payed a cent of credit card interest or missed a payment. The only other additional account I have open on my credit report is a shared credit card with my wife that has a limit of $22k and utilization around 20-30% most months. What is going on? Any thoughts about how to get the line to increase? I have also been considering opening another credit card with better perks than the Discover it card and to decrease the utilization on it, but don't want the penalty of another open account on my credit score. Thanks in advance for your help!