FreeCalculators

Investment

Real vs Nominal Returns: What Your Investments Actually Earn (2026)

Discover the difference between real and nominal returns. Learn how inflation affects your investment gains and calculate your true earnings.

By FreeCalculators Editorial · Published 2026-09-01 · Updated 2026-09-04 · 4 min read · 996 words

A nominal return is the percentage your account grew. A real return is what that growth bought after inflation. The two differ by more than most investors assume: at 3% inflation, a 10% nominal return is a 6.8% real return, and over thirty years that gap is the difference between a portfolio that funds a retirement and one that funds a shorter one. Every long-range plan should be built in real terms.

The Formula, and Why Subtraction Is Not Quite Right

The common shortcut is to subtract inflation from the nominal return. That approximation is close at low rates and drifts as rates rise. The exact relationship divides the growth factors rather than subtracting the rates.

Exact real return versus the subtraction shortcut (2026)

                Nominal return           = 10.0%
Inflation                = 3.0%

Shortcut  = 10.0% - 3.0% = 7.00%

Exact formula
  = (1 + nominal) / (1 + inflation) - 1
  = 1.10 / 1.03 - 1
  = 1.06796 - 1 = 6.80%

Error in the shortcut = 0.20 points

At higher inflation the error grows:
  Nominal 12%, inflation 8%
  Shortcut = 4.00%
  Exact    = 1.12 / 1.08 - 1 = 3.70%
  Error    = 0.30 points

A 0.20 point error compounds. Over thirty years, planning at 7.0% real instead of 6.8% overstates the ending balance by roughly 6%, which on a projected 1.5 million dollar portfolio is 90,000 dollars of retirement funding that was never there.

Where the Inflation Number Comes From

The Bureau of Labor Statistics publishes the Consumer Price Index monthly, and it is the series most financial plans and inflation-linked securities are indexed against. It measures a basket of goods and services for urban consumers, which means your personal inflation rate can differ substantially if your spending is concentrated in categories rising faster than the average.

Healthcare and higher education have historically risen faster than the overall index, while consumer electronics have fallen. A retiree with heavy medical spending faces a higher effective inflation rate than a household whose largest expense is a fixed-rate mortgage payment.

Approximate long-run returns in nominal and real terms, and how each asset responds to rising inflation.
AssetLong-run nominal return, roughlyLong-run real return, roughlyBehaviour when inflation rises
US equities 9% to 10% 6% to 7% Poor short term, recovers over years
Long Treasury bonds 5% to 6% 2% to 3% Worst hit — fixed coupons lose value
Intermediate Treasuries 4% to 5% 1.5% to 2.5% Moderate loss, reinvests at higher rates
Inflation-linked bonds Tracks CPI plus a real yield Roughly the stated real yield Principal adjusts with the index
T-bills and cash Tracks the short-term rate Near zero Repriced quickly, small real loss
Real estate 8% to 9% 4% to 5% Rents adjust, fixed-rate debt helps

Real, After-Tax, After-Fee: The Only Honest Number

Three deductions separate a headline return from what you keep. Applying them in the right order matters, because tax is levied on the nominal gain rather than the real one — you owe tax on inflation.

  1. Start with the nominal total return, including reinvested dividends.
  2. Subtract fees: the fund expense ratio is already netted out, but any advisory fee is not.
  3. Subtract tax on distributions at your applicable rate. The IRS taxes nominal gains, so inflation is taxed alongside real growth.
  4. Divide by one plus inflation to convert the after-tax nominal figure into a real one.
  5. Use that final number in every retirement projection, and state your spending target in today dollars to match.

From a 9% headline to what you keep (2026)

                Nominal total return     = 9.0%
Advisory fee             = 0.9%
After fees               = 8.1%

Taxable distributions    = 2.0% of assets
Tax at 20% combined      = 0.4% drag
After tax nominal        = 7.7%

Inflation                = 3.0%
Real after-tax return
  = 1.077 / 1.03 - 1 = 4.56%

The headline was 9.0%. The planning number is 4.6%.

Convert your own nominal figures using the total return calculator, then check what a given inflation rate does to purchasing power over your horizon with the inflation calculator. Any projection stated in nominal dollars thirty years out is overstating what the money will buy.

Frequently asked questions

How do I calculate my real return?
Divide one plus the nominal return by one plus inflation, then subtract one. A 10% nominal return with 3% inflation gives 1.10 divided by 1.03 minus 1, which is 6.80%. Simple subtraction gives 7.00%, an error of 0.20 points that compounds to roughly 6% of the ending balance over thirty years.
Why does inflation get taxed?
Because the IRS taxes nominal gains. If an asset rises 6% while inflation runs 3%, the real gain is under 3% but tax is assessed on the full 6%. On a 50,000 dollar gain at a 20% rate, roughly half the tax is levied on purchasing power you never gained. Tax-advantaged accounts are the main defence.
What real return should I use for planning?
For a diversified 70/30 portfolio, 4% to 5% real before tax is a defensible planning range, and 3% to 4% after tax in a taxable account. Using a nominal 8% or 9% in a spreadsheet without adjusting the spending target for inflation is the single most common projection error.
Do stocks protect against inflation?
Over long periods yes, because revenues and dividends rise with the price level. Over one to three years, no — equities have historically performed poorly during inflation surprises, since higher discount rates compress valuations faster than earnings adjust. Inflation-linked bonds are the direct hedge; equities are the long-horizon one.

Calculators in this guide

Related guides