Quick Answer
Your real rate of return is your nominal return minus the effect of inflation, and the exact formula is real return = ((1 + nominal) / (1 + inflation)) - 1. A 7% nominal return with 3% inflation gives a real return of about 3.88% -- not 7%. The quick shortcut of just subtracting (7% - 3% = 4%) is close but slightly overstates it. Real return is the honest measure because it tells you whether your purchasing power grew, not just whether the account balance rose. A positive real return means your money buys more over time; a negative one means it buys less, even if the balance is higher.
See Your Purchasing Power Over Time ->
Key Takeaways
- Real return = ((1 + nominal) ÷ (1 + inflation)) − 1. This Fisher formula is the accurate way to adjust for inflation.
- The subtraction shortcut (nominal − inflation) is close but slightly high -- fine for a mental estimate, less so for planning.
- A good real return varies by asset: roughly 6-7% for stocks, 4-5% for a balanced portfolio, 1-2% for bonds, and near zero for cash, over the long run.
- Real return can be negative. Cash earning 1% during 3% inflation loses about 1.9% of purchasing power a year.
- Use real returns for retirement goals so your projected balance reflects what it can actually buy.
Nominal vs Real Return: The Core Idea
Every investment or savings return comes in two flavors, and confusing them is one of the most expensive mistakes in personal finance.
- Nominal return is the raw percentage growth -- the number on your account statement. If your $10,000 grows to $10,700 in a year, your nominal return is 7%.
- Real return is that growth after inflation. It measures how much more your money can actually buy. If prices rose 3% that same year, your purchasing power grew by far less than 7%.
Inflation quietly erodes the value of every dollar. According to the U.S. Bureau of Labor Statistics, the Consumer Price Index (CPI) is the standard gauge of that erosion, and the Federal Reserve targets roughly 2% inflation over the long run. When your return only keeps pace with inflation, your wealth is standing still in real terms even as the dollar figure climbs.
Nominal return = the dollars. Real return = the buying power. Only the second one tells you whether you are actually getting richer.
The Real Rate of Return Formula
The precise way to convert a nominal return into a real return is the Fisher equation, named after economist Irving Fisher. It divides the growth of your money by the growth of prices.
Real return = ((1 + nominal return) ÷ (1 + inflation rate)) − 1
Enter the nominal return and inflation rate as decimals. A 7% return with 3% inflation is (1.07 ÷ 1.03) − 1 = 0.0388, or about 3.88%.
Many people use a quicker shortcut: just subtract inflation from the nominal return.
- Shortcut (approximation): real return ≈ nominal return − inflation rate. Here, 7% − 3% = 4%.
- Fisher (exact): 3.88%.
The shortcut always runs a little high, and the error grows as returns and inflation climb. At low single-digit numbers the difference is small -- a few hundredths of a percent -- so the shortcut is fine for a quick mental estimate. For retirement projections spanning decades, use the exact formula, because that small annual gap compounds.
Worked Examples: Fisher vs the Shortcut
The table below runs four common scenarios through both methods so you can see exactly how the numbers land. Inflation figures shown are illustrative; the 2024 U.S. annual inflation rate was 3.4% per BLS CPI data.
| Scenario | Nominal | Inflation | Shortcut | Fisher (exact) |
|---|---|---|---|---|
| Balanced portfolio | 7.0% | 3.0% | 4.0% | 3.88% |
| High-yield savings | 4.5% | 2.7% | 1.8% | 1.75% |
| S&P 500 (long-run avg) | 10.0% | 3.0% | 7.0% | 6.80% |
| Low-yield savings | 1.0% | 3.0% | −2.0% | −1.94% |
Two things stand out. First, the shortcut and the Fisher formula agree closely at these levels -- the largest gap here is about 0.2 percentage points. Second, and more importantly, the bottom row is negative: a savings account paying 1% while inflation runs 3% loses roughly 1.94% of its purchasing power every year. The balance grows on paper, but the money buys less.
A rising balance can still be a loss. During 2021 and 2022, U.S. inflation ran 4.7% and 8.0% while most savings accounts paid far less -- so cash savers earned a deeply negative real return even as their statements showed gains. Real return, not the balance, is what reveals this.
What Is a Good Real Rate of Return?
There is no single "good" number -- it depends on the risk you take. Higher expected real returns come with more volatility. The table below shows approximate long-run historical real returns by asset class. These are averages measured over many decades and are not guarantees; any given year can be far higher or lower, and past performance does not predict future results.
| Asset Class | Approx. Real Return (long-run) | Risk / Volatility |
|---|---|---|
| U.S. stocks (broad market) | ~6-7% | High |
| Balanced 60/40 portfolio | ~4-5% | Moderate |
| Long-term government bonds | ~1-2% | Low-Moderate |
| Cash / high-yield savings | ~0% (near break-even) | Very Low |
| Low-yield savings / checking | Often negative | Very Low |
The practical takeaways:
- Any positive real return is progress. It means your purchasing power is growing, however slowly.
- Stocks have historically been the strongest inflation-beating asset, which is why long-term investors tilt toward equities despite the volatility.
- Cash is for safety and liquidity, not growth. Over long horizons it barely keeps up with inflation, and in high-inflation years it falls behind.
- Bonds sit in the middle -- steadier than stocks, but with thinner real returns.
To see how a real return compounds an investment over time, run your assumptions through our Investment Calculator or model long-term growth with the Compound Interest Calculator.
Why It Matters: $10,000 Over 20 Years
A single-year real return is easy to shrug off. Its power shows up over decades. Suppose you invest $10,000 and earn a 7% nominal return every year for 20 years, with 3% inflation throughout.
| Measure | Amount | What It Means |
|---|---|---|
| Nominal balance after 20 years | $38,697 | The dollar figure on your statement |
| Real value in today's dollars | $21,426 | What that balance can actually buy |
| Purchasing power lost to inflation | $17,271 | The gap between the two figures |
The statement proudly shows $38,697, but in today's purchasing power that is really about $21,426 -- the same result you get by growing $10,000 at the 3.88% real return for 20 years. Inflation quietly claimed roughly $17,271 of apparent value. This is exactly why planners tell you to think in real terms: the nominal number flatters you, while the real number tells the truth about your future spending power.
Our Inflation Calculator does this translation directly -- enter a future dollar amount and see its equivalent purchasing power in today's money.
Using Real Returns in Your Planning
Once you understand real return, put it to work. Here is how to apply it without tripping over the common mistakes.
Retirement Projections
Retirement goals are almost always about purchasing power -- you want a nest egg that buys a certain lifestyle, not just a big dollar number. When you use a 401(k) calculator or similar tool, feeding it a real return (for example, 4% instead of a 7% nominal return with 3% inflation) gives you a projected balance already expressed in today's dollars. That makes the target far easier to interpret.
Comparing Accounts and Investments
When two options quote different nominal rates during different periods, converting both to real returns puts them on equal footing. A 5% CD in a 4% inflation year (about a 0.96% real return) is a weaker deal than a 3% CD in a 1.5% inflation year (about a 1.48% real return), even though the second nominal rate is lower.
Don't Mix Nominal and Real
The cardinal rule: never pair a nominal return with an inflation-adjusted goal, or vice versa. Either run everything in nominal terms and inflate your goal, or run everything in real terms with a real return and a today's-dollars goal. Mixing the two is a common source of wildly optimistic -- or pessimistic -- projections.
Simple rule of thumb: for planning decades ahead, subtract your inflation assumption from your nominal return and use that real figure throughout. For a 7% nominal expectation and 3% inflation, plan with roughly 4% (or the exact 3.88%) and a goal stated in today's dollars.
Common Real-Return Mistakes
- Judging success by the balance alone. A rising balance during high inflation can still be a real loss. Always check the real return.
- Forgetting taxes. Real return ignores taxes. For a fuller picture, subtract taxes from the nominal return first, then adjust for inflation to get your after-tax real return.
- Using a stale inflation number. Inflation moves. The 2021-2022 surge (4.7% and 8.0%) turned many positive nominal returns negative in real terms. Use a current or forward-looking rate.
- Assuming cash "can't lose money." In real terms, low-yield cash loses purchasing power almost every year.
- Over-trusting the subtraction shortcut for big numbers. At high inflation or high returns, the shortcut drifts meaningfully from the exact Fisher result -- use the formula.
Frequently Asked Questions
A good real (inflation-adjusted) rate of return depends on the asset. Over the long run, U.S. stocks have historically delivered roughly 6-7% real returns, a diversified stock-and-bond portfolio around 4-5%, and long-term bonds about 1-2%. Cash and savings accounts usually deliver a real return near zero or slightly negative after inflation. Any positive real return means your purchasing power grew; a negative real return means it shrank, even if the balance rose. These are long-run historical averages, not guarantees -- actual returns vary widely year to year.
Use the Fisher formula: real return = ((1 + nominal return) ÷ (1 + inflation rate)) − 1. For example, a 7% nominal return with 3% inflation gives (1.07 ÷ 1.03) − 1 = 0.0388, or about 3.88%. A common shortcut simply subtracts inflation from the nominal return (7% − 3% = 4%), which is close but slightly overstates the result. The exact Fisher formula is more accurate, and the gap between the two widens as inflation and returns get larger.
The nominal return is the raw percentage your investment or account grew -- the number on your statement. The real return is that growth after subtracting inflation, which measures how much your purchasing power actually increased. If your account earned 5% but inflation was 3%, your nominal return is 5% but your real return is only about 1.9%. Real return is the more honest measure because it reflects what your money can actually buy, not just its dollar count.
Yes. When inflation is higher than your nominal return, your real return is negative -- your money loses purchasing power even though the account balance grows. For example, a savings account paying 1% during a year of 3% inflation has a real return of about −1.94%. This is common for cash held in low-yield accounts during high-inflation periods, such as 2021 and 2022 when U.S. inflation ran 4.7% and 8.0%, well above most savings rates.
Use real returns when you want to know your future balance in today's purchasing power, which is what most retirement goals are really about. If you expect a 7% nominal return and 3% inflation, plan with a roughly 4% real return so your projected nest egg reflects what it can actually buy. Many planners run both: nominal to see the raw dollar figure and real to understand its true spending power. The key is to be consistent -- do not mix a nominal return with an inflation-adjusted savings goal.
See Your Money in Real Terms
Convert any future dollar amount into today's purchasing power -- or project how inflation will reshape a balance you already have -- with our free tool. It does the Fisher-style adjustment for you.
Sources
- U.S. Bureau of Labor Statistics - Consumer Price Index (CPI)(opens in new tab)
- Federal Reserve - Why does the Fed target 2% inflation?(opens in new tab)
- U.S. SEC Investor.gov - Investing Basics(opens in new tab)
- Consumer Financial Protection Bureau (CFPB)(opens in new tab)
Important Disclaimer
Disclaimer: This content is for educational and informational purposes only and does not constitute financial, tax, or investment advice. Individual circumstances vary, and you should consult with a qualified financial professional before making investment decisions. Historical real-return figures by asset class are long-run averages drawn from widely reported market data and are not guarantees of future performance; actual returns vary significantly year to year and can be negative. Inflation figures cited (2021: 4.7%, 2022: 8.0%, 2023: 4.1%, 2024: 3.4%) reflect U.S. annual CPI data. While we strive for accuracy, laws, rates, and data change over time. Data current as of June 2026.
Content reviewed by the Digital Calculator Team. Learn more about our accuracy standards.