Every bank that offers products Ownership Loan (KPR) always promotes low interest rates. Even the war had occurred interbank interest rate in order to get the attention of people who want to have a dream home. However, there are other things that should be considered when you want to take a mortgage, the interest calculation method applied.
 
Before advancing to the method of calculation of interest, it must be understood that we pay mortgage installments each month consists of two elements, namely the debt installments of principal and interest payments to banks. Departing from the base, there are three methods of interest calculation.
 
First, the method of flats. In this method, the amount of interest that has been designated as a creditor bank debt multiplied the initial loan principal debtor, even though we've mengangsurnya years. Examples as follows, A took mortgages with interest at 10% per annum with principal debt of Rp 36 million over three years with a record amount of interest on loans unchanged during the period. Interest to be paid to the bank from the first year to third year never changed, still Rp 3.6 million.
 
The second method is an effective method. Unlike the flat method, the effective interest method that must be paid each month in accordance with the previous month the debt principal, which would have been reduced because we have mengangsurnya. Based on the scheme in the previous paragraph, every month is set debtor would pay the principal debt of Rp 1 million. Therefore, the calculation of interest in the first month is $ 36 million x 10% x (30 days / 360 days), while in the second to Rp 35 million x 10% x (30 days / 360 days).
 
The third method is a method of annuity which is a modification of the effective methods. This method is set so that the total number of installments or installments paid per buan debtor is always the same each month. The formula that is used to determine the interest rate is equal to an effective method, but with the help of the system, banks can determine the principal per month, so the installment to be paid each month is always the same. Typically, the bank already has a table that can be shown to prospective borrowers.
 
Outside of these three methods, the next thing to be considered is the nature of the interest rate charged by banks, whether floating (floating) or fixed (fixed). The example given above assumes that the nature of bank interest charged is fixed or are not influenced by movements in interest rates on the market, be it up or down.
 
For example we can take from the latest promo BANK BRI, "mortgage package Hockey BRI 2013 & apartments" that lasted from February until March 28, 2013 "offers a fixed interest rate with nature for one to three years with a range of 7% interest.
 
In the interest is floating, interest rate movements in the market is very influential. If the interest rates on the market rise, the amount of interest charged to borrowers will rise as well, and vice versa.
 
Any methods and properties have advantages and disadvantages of each. Therefore, we must understand the true financial condition and personal nature. For example, the nature of fixed interest suitable for borrowers who have a fixed income and do not want to take risks while floating flower nature better suited for that profile can take risks.
 
But in the end, all come back to yourself. Thus, examine before taking a mortgage. Pick the right bank and will explain in detail about the method and the nature of the interest rate offered, as well as provide easiness. As offered BANK BRI for example. We can see how many installments per month by using simulations existing mortgage on the company's website. This will help us in choosing a home based income or house prices.