• Relative Purchasing Power Parity (RPP) is an economic theory that states that exchange rates and inflation rates (price levels) in two countries should equalize over time.

  • Relative PPP is an extension of absolute PPP in the sense that it is a dynamic (as opposed to static) version of PPP.
  • Although PPP is useful for understanding macroeconomics in theory, in practice PPP does not seem to work in the short term.