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Nominal Interest, Real Interest, and the Fisher Equation definitions

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  • Inflation
    A rise in prices that reduces the ability of money to buy goods and services, impacting both income and interest earnings.
  • Purchasing Power
    The quantity of goods or services that can be bought with a given amount of money, affected by changes in price levels.
  • Interest
    A monetary reward for saving or a cost for borrowing, typically expressed as a percentage of the principal.
  • Interest Rate
    A percentage measure indicating how much is earned or paid on borrowed or saved funds over a period.
  • Nominal Interest Rate
    The stated percentage return on savings or cost of borrowing, not adjusted for changes in price levels.
  • Real Interest Rate
    An adjusted measure of interest that reflects the true increase in purchasing power after accounting for inflation.
  • Fisher Equation
    A formula estimating the true return on savings by subtracting inflation from the stated interest rate.
  • Principal
    The original amount of money deposited or borrowed, used as the base for calculating interest.
  • Financial Markets
    Platforms where funds are borrowed and lent, and where interest rates are determined and affected by inflation.
  • Consumer Surplus
    The extra benefit received by buyers when the purchasing power of their money increases due to favorable interest rates.
  • Widgets
    A generic term for goods used to illustrate changes in purchasing power and the effects of inflation in examples.
  • Savings
    Money set aside for future use, which can earn interest and is subject to changes in purchasing power from inflation.
  • Economic Decisions
    Choices made by individuals or firms influenced by changes in interest rates and inflation, affecting outcomes in markets.
  • Inflation Rate
    A percentage measure of how much prices increase over a period, used to adjust nominal values to real values.
  • Estimate
    A calculated approximation, such as using the Fisher equation to determine the real return on savings.