How it works
The net annual factor is (1 + gross return) × (1 − fund cost). Convert it to an equivalent monthly rate for end-of-month contributions. No real ETF is represented. Brokerage, spreads, taxes, currency effects and tracking differences are excluded.
Illustrative example
€1,000, no contributions, 5% gross return and 1% annual cost gives €1,039.50 after one year.