After about 760, you'll pretty much qualify for the lowest rates. However, your credit score is only part of the equation when getting loan approvals. The debt-to-income is a crucial part of credit decisions. Some banks will allow for less income if the scores are higher. In addition, the higher your score, the bigger the cushion. You can have a 763 and drop down to the next tier by getting one too many inquiries or allowing too high of a balance to report. If you're sitting at 808, you'd have to have a few things go wrong to get knocked down to 750.