If I am reading you correctly, you replaced a low CL, low age AU with a higher age, low balance AU card?
First, lenght of credit history is only 15% of credit score. Increases in AAoA only amount, on the average, to around 2 pts per year of aging.
Adding a 10-yr old account to your CR that now apparently has an existing AAoA of 7 years will probably give you around a point or two.
Are you absolutely sure that the new AU account, even with its shining 10 years of history, and current balance of $0, has no derogs attached to it?
I will also pass on to you some of the animous that exists throughout the industry with the very inclusion of any AU accounts being included on the CR, and thus credit score, of another.
FICO scoring is predicated on the prior performance of each individual creditor. Spouses dont even have merged credit reports, and scores.
A few years ago, there was a thriving cottage industry wherein consumers would authorize AU status to totally unknown consumers through private brokering agencies. Fair Isaac proposed, as the logical solution, the total elimination of scoring of any and all AU accounts from a consumer credit score.
Well, of course, consumer advocate groups protested, so FICO did what I think is their current compromise. They included AU accounts if a firm family relationship was shown between the user and the usee.
So inflated FICO scores due to AU account authorizations are well-recognized in the credit industry as being an artifical view of one's own credit history.
When you apply for a mortgage loan, you are asking for big bucks in credit, so, naturally,the lendor exercsises review of more than just a consumer FICO score.
The fact that the owner of an account under which you are designated as an AU has great payment history tells them nothing about you.
They look at things that FICO does not even measure, such as income, total debt, etc. And you can bet that if they think a FICO score is inflated for loan qualification based, not just on the credit risk of the applicant they are dealing with, but upon piggy-backing upon a higher credit rating of anoter, it will probably diminish the impact of the inflated FICO score.
