Definition: In an interest-only loan or mortgage the borrower only pays interest each month. This makes it cheaper than a conventional mortgage, in which part of each month's payment goes towards the principal and part goes towards interest. These loans have become popular because the monthly payments are lower, allowing borrowers to afford a larger home.
However, these loans can be dangerous, especially in a down housing market. The interest rates are generally fixed for the first 1, 3 or 5 years. After that, they convert to a conventional loan, with a higher monthly payment. Most borrowers take on these loans because they assume they will sell the home before the interest rate increases. In a down market, they may not be able to sell. If they cannot afford the increased payment, they may have to default on the loan, and foreclose on the home.
Also Known As: interest-only mortgage, exotic loans, exotic mortgages, subprime loan
Alternate Spellings: interest only loan
Examples: Unfortunately, many borrowers with interest-only loans cannot afford the higher payment when the loan converts to a conventional loan.

