Understanding Low Rate Cash out Mortgage Refinance in California What is Cash-Out Refinancing? Cash-out refinancing is something that replaces your current home loan with a new mortgage higher than your outstanding loan balance. This low rate cash-out mortgage refinance in California allows you to take advantage of equity you’ve built up in your home by withdrawing the difference between the two mortgages in cash. After that, you can invest this money on home remodeling, consolidating high interest debts or other financial goals.