ETF tax guides
Seven guides, in two groups. The first three are about what to compare at all — the ongoing charge is one of four costs and often the smallest, and the accumulating-versus-distributing question turns out to be a tax question with a different answer in each country. The other four explain those four tax systems: the Netherlands charges on what it assumes you earned, Germany on a partially exempted real return, Belgium on the transaction rather than the gain, and Italy on the balance every year and the gain at the end.
Start here
What to compare, and why the obvious number is usually not the important one. These apply wherever you live.
How your country taxes it
Four countries, four completely different mechanisms. Each guide explains one of them and links to the calculator that applies it.
Not investment or tax advice. Verify any figure with your national tax authority before filing.