How Inflation Affects Your Debt: Should You Pay Off Cheap Loans?

Inflation is typically viewed as a negative economic force, eroding purchasing power and making everyday items more expensive. However, there is one group of people for whom inflation can actually be a benefit: borrowers. If you carry debt, particularly low-interest, fixed-rate debt, inflation can work in your favor by reducing the "real" value of what you owe. But how does this mechanic work, and does it mean you should stop making overpayments on cheap loans?

Nominal vs. Real Interest Rates

To understand the relationship between inflation and debt, we must distinguish between nominal and real interest rates. The nominal interest rate is the rate stated on your loan agreement (e.g., a 3.5% fixed-rate mortgage). The real interest rate is the nominal rate minus the inflation rate. If your mortgage rate is 3.5% and the annual inflation rate is 6%, the real interest rate is actually -2.5%. In real economic terms, the purchasing power of the money you owe is shrinking faster than the interest is growing. If your income increases in line with inflation, your debt effectively becomes smaller relative to your earnings, even if you only make the minimum payments.