Realistic Returns for a $1M Plan
Don't build a million-dollar dream on fantasy rates
Because a million-dollar goal usually involves decades, the return assumption has enormous leverage over the answer. Raising it by two points can cut the required contribution by hundreds of dollars a month, which is exactly why it is the input people quietly inflate.
See how much the rate is doing
Set a twenty-five-year timeline and solve for the monthly contribution at 6%, then at 8%, then at 10%. Write down all three.
The 10% version will look wonderfully affordable compared with the 6% version. That difference is not a discovery — it is the cost of assuming a market that may not arrive.
The honest planning move is to build around the 6% answer and treat anything better as a bonus that shortens the timeline.
Where the common rates come from
Long-run US stock market averages before inflation sit near 10%, which is where the optimistic figure originates. After subtracting inflation, the same history supports something closer to 7%.
A portfolio that includes bonds will run below a pure stock figure, often in the 5% to 6% range, because the stability comes at the cost of expected return.
Subtract your fund expenses from whichever figure you pick. A 0.75% expense ratio turns a 7% expectation into 6.25% before anything else happens.
- 6% is a defensible planning rate for a diversified portfolio after costs.
- 7% is reasonable for a stock-heavy allocation in real terms.
- 10% before inflation describes history, not a forecast for your decades.
- Every extra percentage point you assume is a contribution you are not making.
- Rerun at two points lower before you commit to any plan.
The sequence problem nobody mentions
Even if your average return arrives exactly as assumed, the order of the years matters. A decade of weak returns early followed by strong ones produces a different result than the reverse, despite the same average.
For someone still contributing, weak early years are actually helpful, because you buy more at lower prices. For someone near the goal, weak late years are the painful case.
This is why planners suggest shifting toward safer holdings as you approach the target. Protecting the balance matters more once the contributions are small relative to it.
Fees are a return reduction you control
Of everything affecting your realized return, fees are the only component you can set in advance. Markets do what they do; expense ratios are a choice you make when selecting funds.
The gap between a 0.04% index fund and a 0.85% actively managed fund is more than eight tenths of a percentage point every year, applied to your entire balance.
On a plan targeting a million dollars, that difference typically costs a six-figure amount over a full career, or equivalently adds several years to the timeline.
Check what you own before you adjust anything else in the plan. Lowering your costs is the only way to raise your expected return without taking on additional risk.
Build in a margin
Aim slightly past your target rather than exactly at it. Planning for $1.1 million gives you room for a disappointing final stretch without derailing the goal.
Alternatively, plan for a date a couple of years earlier than you need. Arriving early is a pleasant outcome; arriving late during a downturn is not.
Recheck yearly against your actual balance. Real progress data beats a projection made years ago, and small course corrections are easier than large ones.
Try these inputs
- Cautious: $1,000,000 in 25 years at 6%
- Moderate: $1,000,000 in 25 years at 8%
- Optimistic: $1,000,000 in 25 years at 10% — then ask who guarantees it