Data sources & attribution
The figures here are compiled from public sources. Individual values (returns, distributions, exchange rates, fees, tax rates) are cited as facts with a link to the document they came from; those documents are linked, never reproduced. Cached values may lag the originals.
This tool does not publish market price data. It carries no quoted prices, no price history and no price charts, and it holds no market-data subscription. Everything performance-related comes from figures the fund providers themselves publish for retail investors, or from assumptions you set yourself.
Past performance & distributions — fund providers
Calendar-year returns and cash-distribution history are transcribed from each fund provider’s own published disclosures — the factsheet and the PRIIPs past-performance document that providers are required to make available to retail investors. Every figure carries the document it came from and the date it was published; you can see both next to the numbers in each tool. The figures are total returns net of ongoing charges, as the provider states them.
Forward-looking tools (Monte Carlo, the DCA simulators, time in market) do not use any fund’s history at all. They generate outcomes from an expected return and volatility you choose, so the assumptions are visible and adjustable rather than buried in a particular past decade.
Exchange rates & inflation — European Central Bank
Exchange rate data provided by the European Central Bank. Data has been modified for internal calculations. Raw data is available free of charge at ecb.europa.eu.
Inflation figures use the ECB’s HICP series (ICP). © European Central Bank; reused with attribution per the ECB’s reuse policy. The originals are available from the ECB Data Portal.
Identifiers — OpenFIGI
ISIN→listing/ticker mapping is provided by OpenFIGI (Bloomberg L.P.), subject to the OpenFIGI API terms of use.
Fund documents
TERs, tracking difference, replication method, and allocation weights are taken from issuer Key Information Documents and factsheets (BlackRock/iShares, Vanguard, State Street/SPDR, Xtrackers/DWS, and others), which remain © their respective providers.
Broker fee schedules
Per-trade and custody fees are compiled from each broker’s public pricing pages; accurate as of the noted date, not guaranteed current.
Tax rules
NL Box 3, DE Vorabpauschale/Teilfreistellung, BE TOB/Reynders, and IT Imposta di Bollo/IVAFE/CGT are encoded from published tax law and regulator guidance.
Disclaimer
For informational and educational purposes only — not financial, investment, or tax advice. All figures are estimates from public data and simplifying assumptions, may be inaccurate or out of date, and must not be relied upon for investment decisions. If you are a data provider with a concern about use or attribution, please contact the author.