The three-year game plan, revealed Friday ... NEW YORK -- Citigroup Inc.'s new chief executive, Vikram Pandit, plans to stick with a global banking model after months of intense review -- but only after shrinking the company by about one-fifth first. Having said that, the total expense of a refinance mortgage depends on all those factors - interest rate, number of points, and other costs. Lenders will charge several points in order to offer you the lowest rates. With these, the total cost can run between three and six percent of the total amount you borrow. So, for instance, you borrowed $100,000 on a refinance mortgage loan.