If the escrow is truly voluntary, it is not subject to any disclosures (as it is exempt from RESPA requirements).
David, I have to disagree with how this is stated as I feel it is misleading as worded. A
truly voluntary escrow meets the definition of an escrow account.
Escrow account means any account that a servicer establishes or controls on behalf of a borrower to pay taxes, insurance premiums (including flood insurance), or other charges with respect to a federally related mortgage loan, including charges that the borrower and servicer have voluntarily agreed that the servicer should collect and pay. The definition encompasses any account established for this purpose, including a "trust account," "reserve account," "impound account," or other term in different localities. An "escrow account" includes any arrangement where the servicer adds a portion of the borrower's payments to principal and subsequently deducts from principal the disbursements for escrow account items. For purposes of this section, the term "escrow account" excludes any account that is under the borrower's total control .Whether the account is subject to the escrow rules is dependent on who controls the account that the funds are paid in and out of. In all escrow accounts I have dealt with the bank always controls the ins and outs because they are generally processed through GL accounts and not actual customer accounts.
For the borrower to have total control of the account then they must have the authority to do whatever they want with that account whenever they want without limitations.