Investment Return After Fees Calculator

7% gross return minus 1.5% total fees = 5.5% net. Over 30 years on 100,000: gross 761,000; net 498,000. Fees eat 263,000 — 35% of the gross outcome. Small-sounding fees compound into large long-term costs.

Run it with sensible defaults

Using gross return of 7%, total fee of 1.5%, principal of 100,000, years of 30, the calculation works out to 5.50%. The defaults are meant as a starting point, not a recommendation.

The levers in this calculation

The inputs — Gross Return %, Total Fee %, Principal, and Years — do not pull with equal force. The rate and the time horizon usually dominate — compounding means a small change in either reshapes the final figure more than a similar shift in contribution size. Test this by doubling one input at a time.

How the math works

Simple subtraction of fees from gross return. Future values computed on both for comparison.

Why investors run this

Most people's intuition for compounding is wrong — not because the math is hard, but because linear thinking doesn't account for curves. Running numbers through a calculator like this one is the cheapest way to recalibrate that intuition before making an irreversible decision about contribution rate, asset mix, or retirement age.

What this doesn't capture

Steady-rate math ignores real-world volatility. Actual returns are lumpy; sequence-of-returns risk matters most in drawdown; fees and taxes drag on compound growth; and behaviour changes in drawdowns can reduce outcomes below the projection. The number represents one scenario rather than a forecast.

Worked example

Suppose you invest 250,000 in a portfolio expected to return 6% gross per year. Your total annual fees are 0.8%. Your net return is therefore 5.2% per year.

• After 10 years: gross outcome 446,500 | net outcome 413,500 | fees cost you 33,000
• After 20 years: gross outcome 796,700 | net outcome 676,500 | fees cost you 120,200
• After 30 years: gross outcome 1,418,500 | net outcome 1,109,600 | fees cost you 308,900

The same 0.8% fee takes on different absolute weight as time and compounding accumulate.

Common scenarios

This calculator is most useful when:

• Comparing investment accounts or strategies with different fee structures
• Testing how a 0.5% difference in annual costs affects a 20 or 30-year horizon
• Understanding the trade-off between active management (higher fees, uncertain returns) and passive strategies (lower fees, market-tracking returns)
• Modelling the impact of fees on your portfolio during planning stages

What the result shows and doesn't show

The calculator shows the arithmetic gap between gross and net compounding. It does not show whether your gross return assumption is realistic, whether fees will remain constant, or how actual year-to-year ups and downs might change your result. It treats returns as steady; markets do not.

For learning and illustration only

This calculation is educational and illustrative in character. It models a single scenario with fixed inputs and does not account for tax, regulation, inflation, or changes in fee structure over time. Use it to understand the mechanics of fee drag, not as a basis for financial planning without professional input.