Project an ETF holding with recurring contributions and an expense ratio. The calculation estimates the invested balance, not the number of shares purchased. It assumes contributions can be fully invested and does not model bid-ask spreads or intraday execution.
Editorial Policy · Methodology · Corrections Policy
Before you enter your numbers
Use a return appropriate to the ETF’s assets and strategy. A bond ETF, broad equity ETF and leveraged product cannot be assessed with the same simple risk assumptions. Check whether the return already reflects expenses before applying the expense field.
- Starting investment
- Monthly contribution
- Years
- Gross annual return
- Expense ratio
Input reference
- Starting investment: The current balance committed to this goal. Use a recent statement and exclude money reserved for unrelated goals. This starting value is already invested, so do not also enter it as a recurring contribution.
- Monthly contribution: New money added at the end of each month. Convert annual saving to a monthly amount by dividing by 12. This page does not schedule skipped months or one-time deposits automatically.
- Years: The duration of the calculation in years. Longer periods give growth or withdrawals more time to operate. This is a chosen modeling horizon, not a prediction of an investment term or your lifetime.
- Gross annual return: An assumed nominal annual rate, divided by 12 in monthly projections. It is held constant. It is not a guaranteed yield, and the default should be replaced with an assumption suited to your scenario.
- Expense ratio: An annual percentage-point deduction from the gross return assumption. Check whether the source return already deducts this fee. One-time charges, trading costs and fixed account fees are not modeled by this field.
Formula and calculation method
Net modeled return equals gross annual return minus expense ratio. Monthly compounding and month-end deposits then determine the future balance. This is a smooth total-return model; cash distributions are implicitly retained through the return assumption.
Worked example
A 6.5% gross return with a 0.5% expense ratio produces a 6% modeled rate. With 10,000 initially and 200 monthly, ten years gives about 50,970 before unmodeled taxes and trading costs. Changing the contribution amount changes invested capital, not the assumed ETF performance.
How to interpret the result
The result reports projected ETF value after the entered expense ratio and separates contributions from estimated growth. Trading spreads, brokerage commissions, taxes and changes in the ETF portfolio are outside this simplified model.
Small regular purchases can be affected by brokerage charges, spreads and whether fractional shares are supported. Currency exposure also matters when the fund’s assets or your spending currency differ. Leveraged and inverse ETFs can have daily-reset behavior that this constant-return projection does not capture.
ETF growth, contributions and fund fees
The ETF calculator applies the fund expense ratio as an annual reduction to the gross return assumption before projecting growth. Regular monthly contributions are then added and compounded over the selected period.
Bid-ask spreads, commissions where applicable, taxes and tracking differences can affect the return actually received. They are not automatically included.
Trading price and fund value can differ
An ETF trades at a market price, which can differ from the value of its underlying assets. The bid-ask spread is another transaction cost. These effects are absent from a smooth monthly contribution model and may matter more for small or frequent trades.
Check whether distributions are automatically reinvested and whether your broker supports fractional shares. If part of each planned contribution remains in cash, the modeled fully invested balance can overstate invested exposure. A simpler approximation is to enter only the amount you expect to invest consistently.
Use the ETF projection for growth, then check the product details separately
ETFs can hold stocks, bonds, commodities or specialized strategies. A projected balance based on one return assumption says nothing about whether an ETF is diversified, leveraged, concentrated or appropriate for a particular goal.
When comparing two ETFs, keep the same starting amount, contribution schedule and gross return assumption if the objective is to isolate the fee difference. If their underlying exposures differ, a return comparison also needs a risk comparison.
Use The Result In The Next Calculation
Use the ETF result for a single-fund growth scenario. Compare another ETF by changing one assumption at a time, and use the portfolio calculator when several funds need separate weights rather than one blended return.
Retirement planning guides · Calculation methodology
Rules and limits can change. Use these primary sources to verify time-sensitive details.
ETF Calculator FAQs
Are brokerage commissions and spreads included?+
No. The annual expense ratio is only a recurring cost approximation. Adjust contributions or starting capital for separately estimated transaction costs, and avoid assuming trading is costless.
Where can I check the assumptions behind this result?+
Check the formula and limitations sections on the ETF Calculator page for the assumptions specific to this tool. The methodology page explains conventions shared across calculators, and Investor.gov ETF resources is the reference for any time-sensitive statutory or product rule mentioned here.
What does the ETF Calculator result include?+
It includes the starting investment, recurring contributions, assumed gross return and the ETF expense ratio you enter. It does not include live prices, bid-ask spreads, taxes or fund-specific distributions.
What should I change when testing another ETF Calculator scenario?+
Test the time horizon, recurring contribution, return assumption and expense ratio separately. If you are comparing two ETFs, hold the other inputs constant so the result is not driven by several changed assumptions at once.
Can the ETF Calculator replace an official statement or professional advice?+
No. It is a planning calculator. ETFs can hold very different assets. Use a return assumption appropriate to the specific market exposure rather than one generic rate for every ETF. Use official statements and current rules when an exact legal, tax, pension or account figure is required.