The best day of the week to lock in mortgage rates is Monday. That's because the history of mortgage rates shows that the market is the least volatile – aka, the most stable – on this day. You'll be most likely to get a better rate. Applying these tips will help you get the best home improvement or mortgage loan for your needs. By shopping around and comparing interest rates, terms, and other features of each loan, you can ensure that you are getting the best deal possible. Don't forget to ask about fees and penalties as well; they can really add up over the life of a loan.