What is an adjustable rate mortgage (ARM)?

What is an adjustable rate mortgage (ARM)?
ARM is a mortgage with an interest rate that is linked to economic indicators. Interest rate - and your payments - is periodically adjusted up or down, as the index fluctuates. 

  
You will hear the following terminology, speaking with creditors on weapons.

Index
The index that the lender uses to assess changes in interest rates. Common indexes used by lenders include one, three and five-year Treasury securities, but there are many others. Each hand is associated with a particular index.

Margin
Think of the margin as the lender's markup. This interest rate, which represents the cost of doing business plus the profit they make on the loan. Margin added to the index the rate to determine your total interest rate. It usually remains unchanged throughout the term of the loan.

Adjustment period
Adaptation period is the period between rate changes.

You can see the ARM describes figures such as 1-1, 3-1 and 5-1. The first figure in each set refers to the initial period of the loan amount for which the interest rate will be the same as it was the day of closing. The second number is the period of adjustment, showing how often adjustments can be made to speed after the initial period has ended. The above examples are all the weapons, with annual adjustments.

If my payments can go up, why should I consider ARM?
The initial interest rate on the ARM is lower than fixed-rate mortgage (where the interest rate remains constant throughout the life of the loan). Lower interest rate means lower payments, which may help you qualify for larger loans.

Other grounds for believing, ARM:

The possibility of a higher level is not so much a factor if you plan to stay in the house for a relatively short time.


Do you expect your income to increase? If so, additional funds may cover the increased payments, which are the result of the increased speed.


Some weapons can be converted into a mortgage with a fixed interest rate. However, conversion charges may be high enough to pick up all the savings you saw with the initial lower rate.


Although usually can not dictate which index the lender uses, you can choose the lender on the basis of which the index will be applied to your loan. Ask how each index is performed in the past. Your goal is to find what remained relatively stable during economic downturns.

When comparing lenders, consider both the index and the margin rate being offered.


If the creditor has no plans to sell its loans on the secondary market, you may be able to avoid private mortgage insurance (PMI), is usually required if the buyer is less than 20% down payment.