When you are in the market for a mortgage for a new home or a second mortgage for your existing home, the particulars of a mortgage interest formula can be illusive. You can find a number of computer programs to help you along the way with your calculations. Additionally, you can find many free calculators on the computer that can give you the answer to your mortgage interest questions.

If you are considering a new mortgage you will want to be careful that you are not paying such a high interest rate that you can not make your monthly payments. Using an online calculator can help you figure out what you can afford before you begin shopping for a new mortgage. This will give you an upper hand when shopping around.

When calculating your mortgage interest keep in mind that your interest may be fixed or it may be adjustable. This will clearly greatly change the outcome of your payment schedule. The formula for fixed rate mortgage interest is as follows:

Payment = P

Loan Amount = L

Number of Mo. = n

Monthly Interest = c

The formula is essentially P = L[c(1 +c)n]/[(1+c)n-1]

Now if this seems a little confusing you might do well to utilize a mortgage calculator to accurately calculate the monthly interest.

If you are in the market for a new mortgage the best way to get the best deal is by being prepared. Ensure that you know what you are looking for. Decide what your monthly budget will allow for monthly mortgage payments and decide how long you want to be locked into a mortgage. This will help you to eliminate those mortgage opportunities that are inappropriate for your needs.

If you are working with a mortgage broker, be sure that they are completely aware of your needs as well. This will ensure that they only bring you offers that fit into your needs and eliminating wasting of time. Searching for just the right mortgage is a challenge for sure but can be done if you know what you want, know what you can afford and know what the purpose of the mortgage is.