Trading Cost Calculator

What this works out. It prices a year of trading from rates you set: commission on each order, currency conversion on each order, the spread crossed once per round trip, transaction tax on the buy (and on the sale too where the country charges both, as Belgium does), and one flat annual platform fee. A round trip is one buy and one later sell.

What it assumes. That you sell for what you paid. This is a cost calculator, so it models no gain and no loss and produces no projection of what you would end up with. Real prices move, and investment values can fall as well as rise.

What it leaves out, deliberately. Tax on any profit you make, which depends on where you live and what you earn. The market-cap thresholds, the Irish exemption for smaller companies, the Belgian per-operation cap and Italy's daily netting, which decide whether a transaction-tax rate applies at all or how much of it does. And the finding, from US brokerage accounts between 1987 and 1993, that the shares investors bought went on to do worse than the ones they sold. That is a real finding about another market decades ago, and turning it into a line in your bill here would be presenting a historical average as your forecast.

Where the starting numbers come from. The fee figures are one broker's published tariff, read on 2 September 2026: EUR 1 commission plus EUR 1 handling per order on US-exchange shares, 0.25% currency handling, and connectivity capped at EUR 2.50 per exchange per calendar year (degiro.nl/tarieven). They are a dated illustration, not an endorsement, not a recommendation, and not advice. Another broker charges no commission at all and one euro of external settlement cost per trade, and does not publish the spread it makes on the trade, so a headline of one euro is what you can see rather than what you pay. Prices change. Check the current tariff before you act on anything here.

The spread starts at zero because we could not source it, not because it is zero.

The transaction taxes are read from each authority: Ireland 1% on Irish-registered companies (revenue.ie), the UK 0.5% on UK-incorporated companies (gov.uk), France 0.4% (BOFiP), Spain 0.2% (BOE, Ley 5/2020), Italy 0.4% from 1 January 2026, which the law halves to 0.2% on a regulated market or multilateral trading facility (Agenzia delle Entrate), Belgium 0.35% on company shares wherever they are listed, but only if you live in Belgium, and on both the purchase and the sale, capped at EUR 1,600 per operation for that band, which is the catch-all band, so Belgian regulated real-estate company shares and units in funds and ETFs recognised under Belgian or EEA law sit in their own rate bands that we do not model (Code des droits et taxes divers). Read on 2 September 2026 and re-checked on 7 September 2026, with the scope and rate bands of the Belgian levy re-read on 8 September 2026. Where the field starts empty for the country you picked, it means we did not source a rate for it. That is not a finding that there is none.

The position size, trade count and portfolio value we start you on are round anchors, not measurements. Nobody publishes a typical European retail trade count, and we are not going to invent one. Change them.

This is general education, not financial, investment or tax advice, and not a recommendation to buy, sell or hold anything, or to trade more or less often. Check the current figures with your provider and your own tax office, and consult a financial adviser authorised by your local regulator.