There are many types of mortgage loans. The two basic types of amortized loans are the fixed rate mortgage (FRM) and adjustable rate mortgage (ARM).
In a FRM, the interest rate, and hence monthly payment, remains fixed for the life (or term) of the loan. In the U.S., the term is usually for 10, 15, 20, or 30 years.
In an ARM, the interest rate is fixed for a period of time, after which it will periodically (annually or monthly) adjust up or down to some market index. Common indices in the U.S. include the Prime Rate, the LIBOR, and the Treasury Index ("T-Bill"). Other indexes like 11th District Cost of Funds Index, COSI, and MTA, are also available but are less popular.
Adjustable rates transfer part of the interest rate risk from the lender to the borrower, and thus are widely used where unpredictable interest rates make fixed rate loans difficult to obtain. Since the risk is transferred, lenders will usually make the initial interest rate of the ARM's note anywhere from 0.5% to 2% lower than the average 30-year fixed rate.
In most scenarios, the savings from an ARM outweigh its risks, making them an attractive option for people who are planning to keep a mortgage for ten years or less.
A partial amortization or balloon loan is one where the amount of monthly payments due are calculated (amortized) over a certain term, but the outstanding principal balance is due at some point short of that term. A balloon loan can be either a Fixed or Adjustable in terms of the Interest Rate. Many Second Trust mortgages use this feature. The most common way of describing a balloon loan uses the terminology X due in Y, where X is the number of years over which the loan is amortized, and Y is the year in which the principal balance is due.
Other loan types:
In the USA, the process by which a mortgage is secured by a borrower is called origination. This involves the borrower submitting an application and documentation related to his/her financial history to the underwriter. Many banks now offer "no-doc" or "low-doc" loans in which the borrower is required to submit only minimal financial information. These loans carry a slightly higher interest rate (perhaps 0.25% to 0.50% higher) and are available only to borrowers with excellent credit.
Sometimes, a third party is involved, such as a mortgage broker. This entity takes the borrower's information and reviews a number of lenders, selecting the ones that will best meet the needs of the consumer.
Loans are often sold on the open market to larger investors by the originating mortgage company. Many of the guidelines that they follow are suited to satisfy investors. Some companies, called correspondent lenders, sell all or most of their closed loans to these investors, accepting some risks for issuing them. They often offer niche loans at higher prices that the investor does not wish to originate.
If the underwriter is not satisfied with the documentation provided by the borrower, additional documentation and conditions may be imposed, called stipulations. The meeting of such conditions can be a daunting experience for the consumer, but it is crucial for the lending institution to ensure the information being submitted is accurate and meets specific guidelines. This is done to give the lender a reasonable guarantee that the borrower can and will repay the loan. If a third party is involved in the loan, it will help the borrower to clear such conditions.
The following documents are typically required for traditional underwriter review. Over the past several years, use of "automated underwriting" statistical models has reduced the amount of documentation required from many borrowers. Such automated underwriting engines include Freddie Mac's "Loan Prospector" and Fannie Mae's "Desktop Underwriter". For borrowers who have excellent credit and very acceptable debt positions, there may be virtually no documentation of income or assets required at all. Many of these documents are also not required for no-doc and low-doc loans.
Lenders may charge various fees when giving a mortgage to a mortgagor. These include entry fees, exit fees, administration fees and lenders mortgage insurance. There are also settlement fees (closing costs) the settlement company will charge. In addition, if a third party handles the loan, it may charge other fees as well.
Mortgage lending is a major category of the business of finance in the United States of America. Mortgages are commercial paper and can be conveyed and assigned freely to other holders. In the U.S., the Federal Housing Administration administers the programs colloquially known as "Ginnie Mae", Fannie Mae and "Freddie Mac" (also known as the GSEs or government sponsored entities) to foster mortgage lending and thus to encourage home ownership and construction. These programs work by buying a large number of mortgages from banks and issuing (at a slightly lower interest rate) "mortgage-backed bonds" to investors known as MBS or Mortgage Backed Securities.
This allows the banks to quickly relend the money to other borrowers (including in the form of mortgages) and thereby to create more mortgages than the banks could with the amount they have on deposit. This in turn allows the public to use these mortgages to purchase homes, something the government wishes to encourage. The investors, meanwhile, gain low-risk income at a higher interest rate (essentially the mortgage rate, minus the cuts of the bank and GSE) than they could gain from most other bonds.
Securitization is a momentous change in the way that mortgage bond markets function which has grown rapidly in the last 10 years as a result of the wider dissemination of technology in the mortgage lending world. For borrowers with superior credit, government loans and ideal profiles, this securitization keeps rates almost artificially low, since the pools of funds used to create new loans can be refreshed more quickly than in years past, allowing for more rapid outflow of capital from investors to borrowers without as many personal business ties as the past.