Bonds are often something which can lead to a lot of confusion for many people. This is due to the fact that the process of figuring out how the monthly payment is calculated can be somewhat confusing. In reality the formula is relatively basic math but unfortunately many people simply don?t know the formula and therefore do not understand what is involved in the process.
The most important and first factor which goes into figuring out what a monthly payback will be on a bond is the actual bond amount. This number is obviously based on what you are looking to purchase and also how much you can afford to pay back over the course of a specific amount of time, but simply put the higher the bond amount the higher the monthly payments. The next factor which plays a major role in determining what the monthly pay back will be on a bond is the term length on the bond. 15 years is the most common but 10 and 20 are also fairly common. On some rare cases 30 years may even be an option for people. One important thing to remember about the bond term however is that despite the fact that longer terms lead to lower monthly payments they also lead more money being paid out in interest.
The final factor which goes into determining the monthly payment on the bond is the interest rate. The interest rate on a bond is calculated using a number of different figures. Your credit history, employment status, employment history, age, existing debt, and even income all play a role in the interest rate you will pay. The higher the interest rate the more you will pay over the course of the bond and the more per month you will pay.
Now that all this information is available you need to figure out how much interest you will be paying out per month. The interest rate which is given on the bond is actually what is known as an APR or annual percentage rate. The figure which is used in calculating monthly payments is actually a monthly interest rate which is calculated by simply dividing your APR by 12. A simple example would be that if you had a 10% interest rate you would divide .10 by 12. This would result in a monthly interest rate of .0083 or .83%. The next factor which is considered is the number of months you are actually paying on the bond. If you received a bond for 15 years then you would multiply 15 by 12 to get 180. This is the number of months you are paying on the bond. Now that you have this information you can perform the actual calculations to determine your monthly payment. The formula is not very complex at all. The actual formula is M = ((((I + 1) ^ T) * I) * L) / (((I + 1) ^ T) – 1). This may seem complex but it is really not very difficult at all. M stands for the actual monthly payment. The letter I represents the monthly interest rate. T is the term that the bond will be held for in months. L is the total bond amount. So figuring on this basic formula using our basic figures the formula would look like this: M = ((((.0083 + 1) ^ 180) * .0083) * 100,000) / (((.0083 + 1) ^ 180) – 1). This when calculated equals 1072.16 per month.
The final step in determining your monthly payment on a loan amount over the course of the term is to perform some simple math. The actual formula is not terribly complex. There are also a large number of bond calculators available which are capable of performing these simple equations for you quickly and easily. A number are also available which are designed to perform the same figures in reverse. The purpose of this is to determine how large of a bond you can afford to acquire based on the amount per month you can afford to pay back.
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