Risk-Free Interest Rate Explained (Options) - Derivatives
Because risk - free interest - can be freed, other investment risks must have higher returns to encourage investors to hold them. In practice, market participants often choose maturity and yield risk as the primary criteria for excluding bonds issued by sovereigns in the same currency whose default risk is so low that it is negligible. This is inspired by Irving Fisher's concept of inflationary expectations, described in his Theory of Interest (1930), which is based on the theoretical costs and benefits of holding a currency. As Malcolm Kemp points out, the free interest rate means different things to different people (a model of calibration in imperfect markets), and there is no clear consensus on how to measure it directly. Expected productivity gains should encourage investors to prefer future incomes to current consumption. The expected increase in the money supply should lead investors to prefer future incomes to future consumption, and vice versa. An expected increase...