Regulation Z section 1026.19(e)(4)(ii) sets out the timing requirements for a revised loan estimate.
1. A revised loan estimate cannot be provided on or after the date on which you provide the closing disclosure.
2. The consumer must receive any revised loan estimate not later than four (precise definition) business days before consummation.
3. If the revised loan disclosure is not provided in person, the consumer is considered to have received the revised loan estimate three (precise definition) business days after you deliver it or place it in the mail.
4. The second and third requirements can combine to make you send the revised loan estimate seven (precise definition) business days before consummation. If you have documentation of the consumer's receipt of the revised loan estimate less than three business days after you sent it, you can reduce the seven business days to as few as four (for example, if you had complied with E-SIGN and sent the revised loan estimate electronically and the consumer provided a receipt dated the same day).