Plan returns from scenarios, averages, or CAPM estimates. Test contributions, inflation, and future portfolio value. Make better money decisions with practical return planning tools.
| Scenario | Probability | Return | Weighted Contribution |
|---|---|---|---|
| Bear market | 20% | -8% | -1.60% |
| Slow growth | 30% | 4% | 1.20% |
| Base case | 30% | 8% | 2.40% |
| Strong year | 15% | 12% | 1.80% |
| Breakout year | 5% | 18% | 0.90% |
| Probability weighted expected return | 4.70% | ||
Probability weighted expected return: E(R) = Σ [Pi × Ri] ÷ Σ Pi
Scenario variance: Variance = Σ [Pi × (Ri − E(R))²] ÷ Σ Pi
Historical arithmetic mean: Average = ΣR ÷ n
Historical geometric mean: Geometric = [(1 + r1) × (1 + r2) × ... × (1 + rn)]1/n − 1
CAPM: Expected return = Risk free rate + Beta × (Market return − Risk free rate)
Real return: Real rate = [(1 + nominal rate) ÷ (1 + inflation rate)] − 1
Future value: FV = PV(1 + r)n + PMT × [((1 + r)n − 1) ÷ r]
Expected return helps you estimate the average gain of an investment. It does not promise future performance. It gives a practical planning number for saving, investing, and comparing choices. A clear estimate helps you build goals with more discipline and less guesswork.
Personal finance decisions often involve uncertainty. Stocks, funds, and mixed portfolios can rise or fall. Expected return converts several possible outcomes into one useful figure. You can use it to compare strategies, test assumptions, and set reasonable contribution targets for long term growth.
A probability weighted model works well when you can define possible market outcomes. You assign a return to each scenario and a probability to each one. A historical average works when you have past annual returns. It shows both arithmetic and geometric averages. CAPM works when you want a market based estimate using beta, risk free rate, and market return.
Nominal return shows growth before inflation. Real return adjusts for inflation. Both figures matter. A portfolio may grow in money terms while losing purchasing power. Reviewing both values gives a more honest picture of future wealth.
Expected return becomes more useful when paired with starting balance, yearly contributions, and time horizon. Small changes in return can create large changes in future value over many years. That is why conservative assumptions often support better financial planning.
Use the selected expected return as a decision aid, not a guarantee. Review volatility when scenario probabilities are used. Compare arithmetic and geometric averages when historical data is available. Test several cases with higher inflation, lower returns, and different contribution amounts. Better inputs usually create better planning decisions.
Do not treat one year of strong performance as a permanent trend. Do not ignore fees, taxes, or inflation. Do not rely on one method only. Cross checking probability estimates, history, and CAPM can improve confidence. A calculator helps you test assumptions quickly and document a more realistic financial plan. Use this tool as your goals, market outlook, and savings change.
Expected return is the average result you estimate from possible investment outcomes. It is useful for planning, comparing options, and setting realistic portfolio growth assumptions.
No. It is only an estimate. Actual returns can be higher or lower because markets move unpredictably and personal finance outcomes depend on risk, timing, and contributions.
Nominal return shows money growth before inflation. Real return adjusts for inflation. Real return helps you understand purchasing power and supports better long term financial planning.
It blends several return scenarios into one average figure. It also shows variance and volatility, which help you see how widely results may vary around the estimate.
Use historical averages when you have several years of past annual returns. Arithmetic mean helps with simple averages, while geometric mean helps with compounded performance analysis.
CAPM estimates expected return from market risk. It combines the risk free rate, beta, and expected market return to produce a market based planning figure.
Contribution timing changes compounding. This calculator assumes end of year contributions in the projection. Earlier contributions would usually produce a slightly higher future value.
The calculator normalizes the probabilities to their entered total. That keeps the weighted expected return usable, though a clean 100% total is easier to review.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.