Nominal Versus Real Interest Rate
The real interest rate is the nominal rate of interest minus inflation. In the case of a loan, it is this real interest that the lender receives as income. If the lender is receiving 8 percent from a loan and inflation is 8 percent, then the real rate of interest is zero because nominal interest and inflation are equal. A lender would have no net benefit from such a loan because inflation fully diminishes the value of the loan's profit.
The relationship between real and nominal interest rates can be described in the equation:
where r is the real interest rate, i is the inflation rate, and R is the nominal interest rate.
- A common approximation for the real interest rate is:
- real interest rate = nominal interest rate - expected inflation
In this analysis, the nominal rate is the stated rate, and the real interest rate is the interest after the expected losses due to inflation. Since the future inflation rate can only be estimated, the ex ante and ex post (before and after the fact) real interest rates may be different; the premium paid to actual inflation may be higher or lower. In contrast, the nominal interest rate is known in advance.
Read more about this topic: Nominal Interest Rate
Famous quotes containing the words nominal, real, interest and/or rate:
“Discourage litigation. Persuade your neighbors to compromise whenever you can. Point out to them how the nominal winner is often a real loser—in fees, expenses, and waste of time. As a peacemaker the lawyer has a superior opportunity of being a good man. There will still be business enough.”
—Abraham Lincoln (1809–1865)
“A real man wants two things: danger and play. Therefore he wants woman as the most dangerous plaything.”
—Friedrich Nietzsche (1844–1900)
“If a man walk in the woods for love of them half of each day, he is in danger of being regarded as a loafer; but if he spends his whole day as a speculator, shearing off those woods and making earth bald before her time, he is esteemed an industrious and enterprising citizen. As if the town had no interest in its forests but to cut them down!”
—Henry David Thoreau (1817–1862)
“If you could choose your parents,... we would rather have a mother who felt a sense of guilt—at any rate who felt responsible, and felt that if things went wrong it was probably her fault—we’d rather have that than a mother who immediately turned to an outside thing to explain everything, and said it was due to the thunderstorm last night or some quite outside phenomenon and didn’t take responsibility for anything.”
—D.W. Winnicott (20th century)