The Consumer Financial Protection Bureau (CFPB) has resources to help people understand, implement, and comply with the TILA-RESPA Integrated Disclosure (TRID) rule, also known as the Know Before You Owe mortgage disclosure rule. The TRID rule imposes disclosure requirements and waiting periods for mortgage transactions, including escrow accounts. For example, the rule requires mortgage lenders to provide a closing disclosure at least three business days before a borrower signs and finalizes a mortgage. If the borrower requests changes, the lender must provide a revised closing disclosure. 

See TRID Reg Z here