The Basics
- Simple definition: The interest rate adjusted for inflation, calculated as the nominal rate minus the inflation rate.
- Core idea: This represents the true cost of borrowing or the true return on saving after accounting for purchasing power erosion.
- Think of it as: What you actually earn or pay rather than what is advertised.
What It Actually Means
The real interest rate equals the nominal interest rate minus the inflation rate. If you earn 10 percent on savings but inflation is 8 percent, your real return is only 2 percent. If inflation exceeds the nominal rate, the real rate becomes negative, meaning your savings lose purchasing power despite growing numerically. For borrowers, high inflation reduces the real burden of debt because they repay with less valuable money. Central banks care about real rates because they influence economic decisions more than nominal rates.
Example
Pakistan’s policy rate might be 15 percent nominal. With inflation at 12 percent, the real rate is 3 percent, which remains positive and encourages saving. If inflation jumps to 20 percent, the real rate becomes negative 5 percent, discouraging saving and encouraging borrowing and spending.
Why It Matters (2026)
With inflation volatile, real rates swing dramatically. Negative real rates punish savers, reward borrowers, and can fuel asset bubbles. Understanding real versus nominal helps interpret central bank policy and personal finance decisions.
Don’t Confuse With
Nominal Interest Rate because nominal is unadjusted, while real is inflation-adjusted.
See also
Nominal Interest Rate • Inflation • Fisher Effect • Policy Rate • Negative Interest Rates
Read more about this with MASEconomics:
Negative Interest Rates and Inflation: Understanding the Modern Paradox