Fisher Effect A theory describing the long-run relationship between inflation and interest rates. Investopedia Says: This equation tells us that, all things being equal, a rise in a country's expected inflation rate will eventually cause an equal rise in the interest rate (and vice versa). Related Terms: Consumer Price Index - CPI Deflation Disinflation Hyperinflation International Fisher Effect - IFE Producer Price Index - PPI Quantity Theory Of Money Reflation Retail Price Index - RPI Stagflation |