Click here Also, 1002.9 and its Commentary is clear in its requirements that the specific reasons have to be disclosed. That includes all reasons you are denying the person whether it be based on their information or their co-applicant's information.
You can also read the pre-amble to the 2004 changes to Reg B.
The legislative history of the requirement to provide specific reasons for adverse
action indicates that the purposes of the disclosure are to help achieve the antidiscrimination
goals of the ECOA and to educate and inform consumers. These dual
purposes are served by the clarification in § 202.9(b)(2). For example, the disclosure
may discourage a creditor from discriminating based on a co-applicant’s or guarantor’s
race, sex, age, or other prohibited basis. Also, the disclosure may help educate and
inform applicants, co-applicants, or guarantors as to reasons for denial that are not
apparent from looking at their credit report.
Many commenters were concerned about the co-applicant’s or guarantor’s
privacy when the reasons for adverse action pertaining to creditworthiness are given to
the primary applicant. When a person agrees to be a co-applicant, guarantor, or similar
party, however, there is (or should be) a general understanding that information will be
shared. Accordingly, the rule has been adopted as proposed.