When you transfer money internationally, the most important number is not the transfer fee. It is the exchange rate. Many people assume the rate they see on financial news websites is the rate they will receive when sending money abroad. But that’s rarely the case. The difference between the widely quoted “market rate” and the rate you are offered is where most foreign exchange providers earn their revenue. That difference is known as the markup.
Understanding how FX markups work is one of the most important pieces of financial literacy for anyone living or investing across borders.
The Starting Point: The Market Rate
Currencies are traded in global markets twenty-four hours a day during the working week. Banks, hedge funds, corporations and institutional investors exchange enormous volumes of currency for trade, investment and hedging purposes.
The rate at which these institutions trade with one another is often referred to as the interbank rate, the wholesale rate, or the mid-market rate. The important thing to realise is that this is a reference point, not the rate offered to consumers.
Retail customers, whether individuals sending savings overseas or businesses paying international suppliers, do not transact directly at this rate. There is always a ‘spread’ or ‘margin’ between the institutional rate and the rate available to end users.
What Is an FX Markup?
An FX markup is the name of the margin that is added to the wholesale rate by a provider when you’re being offered a conversion rate. For example, if the mid-market rate for GBP to EUR is €1.1600, a provider might quote you €1.1480. That difference represents their markup – or the amount of money they will make on every pound you convert to euros.
The markup may be expressed explicitly as a percentage, or it may simply be embedded in the quoted rate. In many cases, it is not labelled clearly as a “fee” at all.
This is why many providers market themselves as having ‘no transfer fees’, which they don’t in terms of an additional cost to you. But you need to compare the difference in the rates available from different providers to see where you will get the best conversion rate with the lowest margin.
Why Providers Add a Markup
FX providers add a markup to make money. They have to cover various business costs, including operational costs, compliance and regulation, technology infrastructure costs, liquidity sourcing, customer service costs, and they also need to make a profit. Banks traditionally have wider spreads because foreign exchange is often a secondary service within a larger institution. Specialist FX firms and fintech platforms sometimes offer tighter spreads, which would mean a smaller margin, because currency exchange is their core business.
However, there is no universal rule. Pricing varies by:
- Currency pair
- Transfer size
- Market volatility
- Time of day
- Customer type
Understanding this context helps users compare providers intelligently.
Why Small Percentages Matter So Much
At first glance, a difference of 0.5% may seem trivial or irrelevant. On a £500 transfer, it barely makes a difference to your exchange. On £5,000, it becomes more noticeable, and on a £150,000 transfer, it has a major impact. Let’s say the exchange rate with the euro is €1.15, but falls from this to €1.14. Exchanging £500 would give you €575 at €1.15, and €570 at €1.14. For £5,000, the same calculations give you €5,750 or €5,700 respectively. But at £150,000, you would get €172,500 and €171,000 – a difference of €1,500.
The lesson here is that currency pricing scales linearly with size. If you are sending money to purchase property abroad, transferring pension savings, or moving significant capital internationally, the markup becomes the dominant cost driver.
For expats making recurring transfers, for example monthly mortgage payments in another currency, the long-term cumulative impact can be significant. This is why exchange rate awareness is not about perfection, but about avoiding unnecessary costs over time.
How Markups Differ From Transfer Fees
Many providers structure foreign exchange pricing in two components:
- A transfer fee (flat or percentage-based).
- A margin built into the exchange rate.
Some advertise “no transfer fees” while using a wider margin. Others charge a visible fee but offer a tighter rate. Depending on how much money you need to transfer, a flat fee with a tighter margin may be a better option for you. But you have to take the entire costs of your transfer into account to find the provider that works for you.
The easiest and most practical comparison method is to check how much foreign currency arrives for the same send amount at the same moment across providers. This avoids being misled by marketing terminology.
The Role of Market Volatility
Exchange rates are not static. They move constantly in response to:
- Interest rate decisions
- Economic data releases
- Political developments
- Geopolitical events
- Capital flows
When markets are volatile, providers may widen their margins slightly to manage risk. If liquidity becomes thin, such as during weekends or public holidays, pricing adjustments are common. Many providers explicitly disclose that weekend conversions include a protective buffer because underlying currency markets are closed.
This is not unique to fintech platforms. Banks operate in a similar way.
Currency Pair Complexity
Not all currency pairs are priced equally. Major pairs such as GBP/EUR, EUR/USD or USD/JPY are highly liquid, and the more liquidity, usually the tighter the spreads or margin. More exotic or less frequently traded pairs may carry wider margins due to lower liquidity and higher hedging costs. Expats moving between large developed economies often benefit from more competitive pricing than those transferring to smaller or emerging markets.
Transparency vs Opaqueness
One of the biggest shifts in recent years has been increased transparency in FX pricing. Some providers openly reference the mid-market rate and disclose their margin clearly. Others present a single quoted rate without explanation.
Transparency does not automatically mean lower cost, but it does allow informed comparison. For a comparison site, the most helpful approach is not to promise “best rates” but to educate users on how to identify and measure the effective margin. This is why our comparison tables don’t offer you ‘best rates’, not least because what is right for one person, may not be right for another.
How to Calculate the Effective Markup
While providers do not always present the markup percentage explicitly, users can approximate it by comparing the quoted rate to a publicly available mid-market reference rate at the same moment. The percentage difference between the two indicates the effective margin.
However, because rates fluctuate constantly, comparisons must be made at the same time and under the same conditions to be meaningful. For most users, focusing on the final amount received is simpler and more intuitive.
When Markup Matters Most
FX markups matter most in three situations. The first is when you’re making large one-off transfers, such as property purchases or capital relocation. The second is when you’re making regular recurring transfers, where even modest margins accumulate over time. And the third is when you make pension and investment movements, where the base amount is significant.
In contrast, for occasional small travel spending, convenience may outweigh marginal pricing differences.
The Psychological Trap
Many consumers focus on visible fees because they are easy to see. A £10 transfer fee feels tangible. A 0.8% exchange margin is abstract. Providers understand this behavioural bias, and they use it to their advantage.
From a financial planning perspective, the abstract percentage often carries more weight than the visible flat fee. Education reduces susceptibility to this bias.
Risk, Timing and Strategy
While understanding markups is important, obsessing over short-term rate movements can be counterproductive. Trying to time currency markets is inherently uncertain. Exchange rates respond to macroeconomic forces that even professional traders struggle to predict consistently.
For expats, a structured approach, which includes understanding typical margins, planning ahead for large transfers, and choosing transparent provider, is generally more effective than attempting to capture marginal improvements through speculation.
The Long-Term View
Foreign exchange costs are often described as “friction”. They are part of operating financially across borders and can’t be avoided completely. But the goal is not to eliminate friction entirely, just to reduce unnecessary friction. So, a clear understanding of how FX markups work transforms exchange pricing from a mysterious black box into a measurable, manageable component of international finance. For internationally mobile individuals, that clarity compounds in value over time.
If you would like to find out which FX provider might work well for you, then please take a look at out FX comparison tables.
