Rates of return on a loan or credit or capital inputs. In terms of the loans are usually a percentage of the principal amount per period of time, such as 1 year old, in terms of the return on capital is a factor. Compensation is not the price of physical capital. However, the rental rate of capital that the interest rate will be determined by the demand for and supply of credit loans. Conditions of supply and demand depends. The duration of the loan amount to the lender of the loan risk category. And the borrower's property, for example, long-term loans usually charge higher interest rates in the short term. Interest rates in high-risk cases are usually higher than those with low risk. The interest rate charged to banks, often lower than that charged to their general, such as interest rates are also divided into different types such as interest rates, pure (pure interest rate) is the interest rate in case no risk whatsoever. Interest rates in the (nominal interest rate) is the nominal interest rate to a borrower must pay. And real interest rates (real interest rate) is the interest rate as the less the effects of inflation (deflation), and the effective interest rate (effective interest rate) is the interest rate plus a margin as equity transactions. The borrower must pay, in addition to the nominal interes