The same company in three places
Open a broker's search box for a large company and you often get several results: the share in Brussels, the same share in Amsterdam, a line in New York. They look interchangeable, and for the value of the investment they nearly are — it is the same business either way. But a Belgian buyer meets a handful of real differences between the venues, and, just as important, a couple of things that look like they should differ and do not. This is the checklist of both.
Two things sit at the centre of it, so start there: which two taxes are the same on every exchange, and which few costs are not.
What does not change with the exchange
Before the differences, the two that catch people out by staying put.
- The stock exchange tax (TOB). For an ordinary share the Belgian rate is 0.35%, and it is a tax on the transaction by a Belgian resident, not on the market. Buy the same share in Brussels, Amsterdam, Frankfurt or New York and the 0.35% is identical. The venue does not enter the calculation; the per-order cap is described in the TOB per-transaction cap.
- The dividend withholding. This follows the company's country of residence, not where its shares trade. A Belgian company withholds Belgian tax on every venue; a French company withholds French tax whether you buy it in Paris or as a New York certificate. And on top of whatever the source country took, Belgium taxes the net foreign dividend at 30% — the mechanism in the 30% Belgian dividend withholding and, for the foreign layer and its partial relief, in foreign dividend withholding, the W-8BEN and the French credit.
So the tax on a share is a property of the share and of you, not of the exchange. That is the single most useful thing to hold onto here, because the venue does change several costs — just not those two.
1. Is it the same security, or an ADR?
The first question decides how much the rest matters. There are two situations:
- The same share on several venues. Many European shares are fungible across markets: one ISIN, listed in more than one place. Ahold Delhaize is a Belgian example — one security, ISIN NL0011794037, trading on both Euronext Brussels and Euronext Amsterdam. A share bought in one place can be sold in the other; it is literally the same line. Here only microstructure differs.
- A different security representing the same company. An ADR (American Depositary Receipt) or GDR is a certificate a bank issues so a company can trade in a market where its ordinary shares do not. It has its own ISIN, its own currency, and often its own small fee. It is not the ordinary share, though it tracks it.
Knowing which of the two you are looking at is what tells you whether points 2–8 are trivial or real.
2. Trading currency and the FX cost
A share in Brussels is priced in euros; the same company's New York line is in dollars. The economic exposure is unchanged — a euro-earning company is a euro-earning company however its shares are quoted — but buying the dollar line means a currency conversion, and the broker's FX spread on that conversion is a real cost that the euro line avoids. Some brokers convert automatically at a markup; some let you hold a dollar balance. Neither the quote currency nor the FX step changes what the business is worth; it changes what the trip to it costs.
3. Liquidity, spread and volume
A company usually has a primary (home) listing where most of its volume sits, and secondary listings that can be much thinner. The bid–ask spread — the gap between buy and sell price — is a cost paid on every trade, and on a thin secondary venue it can be several times wider than on the home market. For a share that trades millions a day at home, a lightly used foreign listing may quietly cost more in spread than the whole broker commission. The home listing is usually, though not always, where the spread is tightest.
4. Trading hours
Buying a US listing from Belgium means the market opens in the afternoon or evening, Brussels time, and the first minutes after any open carry wider spreads everywhere. A European listing of the same company trades in your own working day. This is not a tax or even quite a cost, but it decides when your order can actually execute at a fair price — and a market order placed into a closed or just-opened book is where slippage lives.
5. Your broker's per-exchange fees
Brokers do not charge the same commission on every market. A foreign exchange — especially a US one — often carries a higher fee, sometimes a currency or connectivity charge, occasionally an ongoing custody fee for holding foreign lines. Two orders for the same company on two venues can therefore cost two different amounts at the same broker, entirely because of the venue. What each broker withholds and charges around this is laid out in the broker tax comparison, with a source on every cell.
6. ADR-specific costs
If the foreign line is an ADR, it carries costs the ordinary share does not:
- Depositary pass-through fees. The bank that issues the ADR charges a small annual servicing fee — commonly a cent or a few cents per share — deducted from a dividend or billed through your broker. On a non-dividend-paying ADR it can still appear as a periodic charge.
- The ratio. One ADR does not always equal one share; it can be one ADR to several shares, or the reverse. AB InBev's is one-for-one, but a ratio other than 1:1 is why an ADR's price sometimes looks nothing like the home quote.
- Termination risk. A company can end an ADR programme, forcing a conversion or sale on someone else's timing.
7. Where the dividend actually leaves money
To make point-zero concrete: the withholding is set by the company, and the ADR does not rescue a Belgian from it. A French company held as a New York ADR still suffers French withholding, then the Belgian 30% on the net — the same two layers as buying it in Paris, plus the ADR fee and the dollar conversion. The ADR route does not reduce Belgian tax; it usually adds cost. The only thing that changes the withholding is the company you buy, not the desk you buy it at.
8. The reference market and settlement
Finally, the plumbing: the reference (primary) market is the venue whose price regulators and the company treat as the official one, and where corporate actions are administered first. Settlement currency and the securities depository can differ between venues too. None of this changes what you own, but it decides which calendar a dividend or a split follows and in what currency the cash arrives.
Where to read each of these
Each property is knowable before you place the order:
- The ISIN and the market (MIC) on the order ticket tell you whether it is the same security or a separate line — same ISIN across venues means one fungible share.
- The company's investor-relations page lists its listings, its ADR programme and ratio, and the depositary.
- Your broker's fee schedule gives the per-exchange commission, the FX markup and any custody charge.
- The broker tax comparison shows who withholds what, with a source on each row.
To see the stock exchange tax on a specific order before placing it, the stock exchange tax simulator computes it — the same 0.35% whichever venue you choose — and the calculator does it for a whole portfolio from a broker export.
AB InBev, side by side
The clearest Belgian example is a company that trades both ways: Anheuser-Busch InBev, whose ordinary share is on Euronext Brussels and whose ADR is in New York.
| Property | Euronext Brussels (ABI) | NYSE ADR (BUD) |
|---|---|---|
| Company | Anheuser-Busch InBev | Anheuser-Busch InBev |
| Security | Ordinary share | ADR (1 ADR = 1 share) |
| ISIN | BE0974293251 | US03524A1088 |
| Currency | EUR | USD |
| Listing | Primary (home) | Secondary |
| Belgian TOB | 0.35% | 0.35% |
| Dividend withholding | Belgian company → Belgian tax, then 30% Belgian | Same Belgian dividend, paid in USD |
| Extra cost | — | ADR depositary fee; EUR↔USD conversion |
The two rows that matter are the last two: the tax is identical, and the differences are all cost and convenience — a dollar conversion and an ADR fee on the New York side, against a same-day euro trade on the home market. It is the same company at the same price (1:1), reached two ways with two different bills for the trip. Which venue is cheaper for you depends on your broker's per-exchange fees and FX markup, not on the tax and not on the business. The figures illustrate the mechanism; ISINs, fees and ratios change, so verify each against the company's own documents and your broker before relying on it.
Always verify your figures
Belfolio computes and presents these amounts for information only. This is not tax advice nor investment advice, and nothing here is a suggestion to buy any particular stock or to trade on any particular venue. Rates, fees and listing arrangements change; verify your amounts with the FPS Finance or your accountant before filing.
Published 9 Aug 2026
Frequently asked questions
- Do I pay less Belgian stock exchange tax if I buy a share on one exchange rather than another?
- No. The Belgian stock exchange tax on ordinary shares is 0.35% and it follows the transaction and the Belgian resident, not the venue. Buying the same share in Brussels, Amsterdam or New York carries the same 0.35%. What changes between venues is currency, spread, trading hours and your broker's fee — not the tax.
- Is an ADR the same as the ordinary share?
- Not exactly. An ADR is a US-listed certificate that represents the ordinary share — often one-for-one, but it is a different security with its own ISIN, priced in dollars, and it can carry a depositary pass-through fee the ordinary share does not. The underlying company, and therefore the dividend withholding, is the same.
- Does the exchange change the dividend withholding on a foreign stock?
- No — the withholding follows the company's country of residence, not the market you buy on. A French company withholds French tax whether you buy it in Paris, Brussels or as a New York ADR; a Belgian company withholds Belgian tax on every venue. On top of that, Belgium taxes the net foreign dividend at 30%, again regardless of where you bought.