If the consumer expresses an interest in an ARM or the MLO has discussed the possibility of an ARM then yes the disclosure would be required.
Official Interpretation
Paragraph 19(b)(2)
1. Disclosure for each variable-rate program. A creditor must provide disclosures to the consumer that fully describe each of the creditor's variable-rate loan programs in which the consumer expresses an interest. If a program is made available only to certain customers of an institution, a creditor need not provide disclosures for that program to other consumers who express a general interest in a creditor's ARM programs. Disclosures must be given at the time an application form is provided or before the consumer pays a nonrefundable fee, whichever is earlier. If program disclosures cannot be provided because a consumer expresses an interest in individually negotiating loan terms that are not generally offered, disclosures reflecting those terms may be provided as soon as reasonably possible after the terms have been decided upon, but not later than the time a non-refundable fee is paid. If a consumer who has received program disclosures subsequently expresses an interest in other available variable-rate programs subject to 1026.19(b)(2), or the creditor and consumer decide on a program for which the consumer has not received disclosures, the creditor must provide appropriate disclosures as soon as reasonably possible. The creditor, of course, is permitted to give the consumer information about additional programs subject to §1026.19(b) initially.
4. As applicable. The disclosures required by this section need only be made as applicable. Any disclosure not relevant to a particular transaction may be eliminated. For example, if the transaction does not contain a demand feature, the disclosure required under §1026.19(b)(2)(x) need not be given. As used in this section, payment refers only to a payment based on the interest rate, loan balance and loan term, and does not refer to payment of other elements such as mortgage insurance premiums.
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The opinions expressed are mine and they are not to be taken as legal advice.