What is the 3 7 3 rule in mortgage?

Written by Editorial Team | Last Updated: August 2026

The three-seven-three rule in mortgage lending refers to federally mandated consumer protection timelines derived from the Truth in Lending Act and the Mortgage Disclosure Improvement Act. It dictates that lenders must deliver initial loan estimates within three business days of receiving a completed application, enforce a mandatory seven-business-day waiting period before closing the loan, and provide a revised disclosure with another three-day wait if major terms change.

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