Automated underwriting engines can provide near-instantaneous loan approval or denial decisions; therefore, implementing automated underwriting systems can save a considerable amount of time, as manual underwriting can take as long as 60 days to complete.
In addition to the time savings, automated underwriting is preferred because it is based on algorithms, eliminating human bias. Freddie Mac maintains and markets a large automated underwriting engine known as Loan Prospector, and Fannie Mae has an automated underwriting engine known as Desktop Underwriter.