NovThe spread can matter more than the advertised fee
How an exchange-rate mark-up can outweigh a visible commission on a large property conversion, and why quotes should be compared by total outcome rather than fee labels.
This article reflects the named expert’s practical perspective. See NovAsia’s editorial policy for how material is prepared and reviewed.
“Zero commission” is a very easy number to understand. It is also an incomplete way to price a currency conversion.
A provider can charge an explicit fee, build a margin into the customer exchange rate, or use both. On a property-sized amount, a small difference in the rate can outweigh a visibly larger-looking transaction fee. The comparison is therefore not between two commission percentages. It is between two complete outcomes for the same amount at roughly the same time.
A fee and an exchange-rate margin are different price components
The UK Financial Conduct Authority has highlighted this distinction directly in its work on international-payment transparency. A firm may use a reference rate and charge a separate fee, or it may give the customer a rate that includes a mark-up. The absence of a fixed fee does not make the conversion costless if the rate itself contains a margin.
That is what makes the word “spread” important here. Depending on context it can refer to the gap between buy and sell prices or, more practically for a customer comparison, to the difference between a chosen reference and the rate actually offered. I am less interested in arguing about the label than in exposing the money effect.
If the cost embedded in the rate is equivalent to 1% of a 100,000-unit conversion, the economic effect is about 1,000 source-currency-equivalent units on that simplified basis. A separate 0.2% fee on the same base would be about 200. Those are hypothetical figures, not market quotes. They simply show why a rate difference that looks visually tiny can matter more than the fee line.
“Commission free” should not end the calculation
When a provider advertises no commission, I would still want to know the actual rate offered for the buyer’s amount and how that rate compares with an identified reference at the same time.
The reference itself is not an entitlement. The FCA has previously warned about currency converters that display an interbank-style rate in a way that could lead consumers to believe that rate is available to them when the executable customer rate is worse. A benchmark is useful for measuring a mark-up; it is not automatically a price that a retail customer can trade.
This distinction becomes especially relevant in property because the base amount is large. A tenth of a percentage point that would barely affect a holiday conversion can become a meaningful line item in a purchase budget.
Compare the amount received, not the slogan
A practical comparison can be surprisingly simple. Give two providers the same source currency, the same target currency and the same amount. Obtain quotes as close together in time as reasonably possible. Record the customer rate, every visible fee and the target amount expected to arrive.
That last number is often the most revealing. One provider may charge a fee but deliver more target currency. Another may advertise no fee but use a wider rate margin. A third may be cheaper at the exchange stage but use a payment route where third-party bank charges can affect the recipient.
The FCA’s current good-practice examples focus on exactly this fuller picture: amount sent, rate applied, mark-up where relevant, fixed and variable fees, total cost and recipient amount. If intermediary or recipient-bank charges may apply and cannot be known precisely in advance, the customer should at least be told that uncertainty exists.
The percentage needs the transaction amount beside it
Cost percentages have a strange psychological effect. A 0.4% difference can feel negligible because the number is below one. On a large base it may not be negligible at all.
For a hypothetical 25,000-unit conversion, 0.4% is 100 units. On 250,000, it is 1,000. The percentage has not changed; only the base has. This is why I do not like phrases such as “only half a percent” unless the full amount is on the same page.
The reverse is also true. A fixed 30-unit fee looks large on a small conversion and almost irrelevant on a very large one. Different fee structures can change their relative ranking as the amount changes. A small test transfer therefore should not be used automatically to extrapolate the full property cost.
A wider spread is not automatically the wrong choice
The cheapest pure conversion is not necessarily the most suitable route for a property payment. Documentation, payment timing, access to an executable quote, the required settlement currency and the receiving bank’s process may matter. A buyer can rationally pay more for a route that actually works for the transaction.
But those operational advantages are easier to judge after the currency cost is visible. If one route costs an additional 0.6% overall, the buyer can decide whether its documented advantages are worth that amount. If the 0.6% is buried inside a rate while the service advertises “no fee,” there is no equally clear decision.
Transparency does not require every provider to use the same pricing model. It requires the buyer to be able to understand the result.
Keep a record of the basis
Exchange rates move, so a quote comparison should keep a timestamp. It should also keep the amount and the reference used for any spread calculation. Without those three pieces, somebody reviewing the figures later may think that one provider changed its margin when the underlying market simply moved.
For a property purchase, I would preserve the full quote or transaction record rather than a single screenshot of the headline rate. The evidence is the chain: amount, rate, fees, validity window where applicable and expected target amount.
That is why the spread can matter more than the advertised commission. The statement is not a claim that spreads are always large or commissions are always small. It is a reminder that the most visible price component is not necessarily the largest one.
Sources
- UK Financial Conduct Authority — “Consumer Duty: International payment pricing transparency — good and poor practice”, updated 3 December 2025: rate mark-ups are a cost and should be shown alongside fixed and variable fees; accessed 6 October 2026.
- UK Financial Conduct Authority — “The use of the interbank rate in online currency converter tools”: a reference or interbank rate should not be presented as though it were necessarily available to the customer; accessed 6 October 2026.