Is it possible to be added as an authorized user to too many accounts. I am thinking like four or five accounts with a good history and high limit with low balance? Thanks in advance for your thoughts.
The direct FICO score increase from AU lines goes down as the number of cards goes up. FICO likes to see a mix of credit, including retail, bank card and installments.
You can reach a plateau of sorts once you're added to accounts with considerable age and enough that your overall utilization is reduced to 35% or thereabout. A brute force methodology is not advisable and a waste of money. You need to see what you need in terms of added history and avaliable credit and add tradelines accordingly.
