The Board is publishing for public comment an interim final rule amending Regulation Z (Truth in Lending). The interim rule implements Section 131(g) of the Truth in Lending Act (TILA), which was enacted on May 20, 2009, as Section 404(a) of the Helping Families Save Their Homes Act. TILA Section 131(g) became effective immediately upon enactment and established a new requirement for notifying consumers of the sale or transfer of their mortgage loans. The purchaser or assignee that acquires the loan must provide the required disclosures in writing no later than 30 days after the date on which the loan is sold or otherwise transferred or assigned. The Board is issuing this interim rule, effective immediately upon publication, so that parties subject to the statutory requirement have guidance on how to comply. However, to allow time for any necessary operational changes, compliance with the interim final rule is optional for 60 days from the date of publication; during this period, covered persons would continue to be subject to the statute's requirements. The Board seeks comment on all aspects of the interim rule.