When you apply for a mortgage refinance, your credit scores will play an important role in the decision-making process. Lenders will use your credit scores to get a better understanding of your financial history and to determine whether or not you're a good candidate for a mortgage refinance.
Your credit scores will be based on several factors, including how long your accounts have been established and the most recent activity on each account. Therefore, it's important to make sure that all of your accounts are in good standing before you apply for a mortgage refinance.