- Inflation - an increase in the general price level
- Deflation - a decrease in the general price level
The Price Indices used in the calculation of price level changes are:
- Consumer Price Index (CPI) - measures the price level by a monthly pricing of a specific set of goods/services purchased by a typical urban consumer.
- Gross Domestic Product Price Index (GDP Deflator) - includes the prices of all goods and services produced in the country. It includes investment, government purchases, exports, as well as consumer goods and services.
- Producer Price Index - measures the prices of specified commodities at the time of their first commercial sale.
- Higher rates of inflation lead to higher interest rates which in turn discourage investments.
- Inflation increases the price of resources, thus increasing the demand for capital.
- If the tax structure is not indexed for inflation, taxpayers may be pushed to higher tax brackets even though real income has not increased.
- Inflation distorts profit because of inadequate valuation of fixed assets and inventories.
- The accuracy of predictions needed for business planning is reduced during periods of rapid inflation.
- Inflation hurts creditors, fixed income groups, and savers, but benefits debtors because they pay back their debts in less valuable units of money.