What is mortgage calculator?

According to Wikipedia, a web based free encyclopedia, a Mortgage Calculator is “an automated tool that enables the user to quickly determine the financial implications of changes in one or more variables in a mortgage financing arrangement. The major variables include: loan principal balance, periodic interest rate, compound interest, number of payments per year, total number of payments and the regular payment amount”.

A mortgage calculator can be a very practical tool when buying a house. It’s not your typical calculator where you can resolve some mathematical equations. A mortgage calculator can give quick and reliable answers to the most savvy buyer. With this tool you can compare interest rates, costs, payment schedules and even play with the numbers, meaning, you can find out how much your monthly payment would be when you do a down payment/principal ratio equation and change the length of the loan by adding more dollars to your monthly payment.
How does a Mortgage Calculator work?
The equation to come up with numbers is not simple. I can write about it and try to explain, I’ve tried to understand it myself, and believe me it’s not an easy task. Why complicate yourself trying to come up with the numbers you need to make a decision on whether you can or you cannot afford the house you like? A mortgage calculator does all the work for you. The input information is key to determine your monthly payment. Mortgage calculators vary by manufacturer but most of them have a common denominator: the information you will need to provide, to come up with the results you are looking for.
For example: you will need to have a loan amount, an interest rate, the length of the mortgage and the home value. Added information that is also necessary is the following: annual taxes, annual insurance and annual PMI, short for private mortgage insurance. Now all of this information is very relevant when using a Mortgage calculator but the information that is essential in this process is the interest rate and the length of the loan. When you change this two variables, meaning you input a lower interest rate, then you will get a lower monthly payment. How much lower? well, that really depends on the amount of the loan.
I hope this information about Mortgage calculators is useful for you. Now the next question is, do you as a home buyer really need to have one or is this a tool more oriented to Real Estate Agents and Loan officers. Personally, I think the latter.