Additional documentation from the Commentary to 1002.4
Section 1002.4—General Rules
Paragraph 4(a)
1. Scope of rule. The general rule stated in §1002.4(a) covers all dealings, without exception, between an applicant and a creditor, whether or not addressed by other provisions of the regulation. Other provisions of the regulation identify specific practices that the Bureau has decided are impermissible because they could result in credit discrimination on a basis prohibited by the Act. The general rule covers, for example, application procedures, criteria used to evaluate creditworthiness, administration of accounts, and treatment of delinquent or slow accounts. Thus, whether or not specifically prohibited elsewhere in the regulation, a credit practice that treats applicants differently on a prohibited basis violates the law because it violates the general rule. Disparate treatment on a prohibited basis is illegal whether or not it results from a conscious intent to discriminate.
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The opinions expressed are mine and they are not to be taken as legal advice.