Interest-only mortgage rates also provide the consumer an unlimited cash flow. Other loans, like fixed rates often have restrictions on how much a home buyer can "cash out" during refinancing. There are cases where the desired amount is $300,000 but since fixed rate loans only allow $150,000 to the borrower, bank try to charge higher rates. A Brief History of Interest-Only Mortgages Interest-only mortgages are not relatively new concepts. The idea behind interest-only mortgages was spawned from the more flexible and more inventive jumbo mortgage markets. Because of this, interest-only mortgages are traditionally a loan type preferred by savvy investors and well-heeled clients who want to use the principal portion of their payment on other more productive investments. Existing mortgages had interest rates at 5 percent to 7 percent but when the rates rose, the original percentage rose also, forcing a pay out of 10 percent to 15 percent in interest on deposits. These forced buyers to use take over mortgages so they could assume loans with lower rates. If you want a take over mortgage, remember that if a deal sounds too good to be true, it probably is. Financial reports suggest that the risks you assume in taking a variable rate mortgage are considerable but the gains are even more so. This is because variable rate mortgages may turn out to be cheaper than fixed rate mortgages in the long run. Several lenders offer variable rate mortgages among their product lines. With adjustable-rate mortgage payments, there is little chance of you knowing what your future monthly payment would be. Some types of adjustable-rate mortgage payments have limits to the interest-rate increase. When an adjustable-rate mortgage reaches a certain percentage, the interest rate will no longer increase for the duration of that period. But with an amortization mortgage with capped payment, you would only be paying $1075 and the other $125 gets added to your loan balance. But this setback of a negative amortization mortgage can be counteracted if you choose to pay the additional amount now and not wait for its payoff overtime. Another advantage of negative amortization mortgages is that cash flow is more easily controlled.