Earning in Dirhams, Spending in Sterling: How Expats Lose Thousands to Exchange Rates

You’ve found a money-transfer service with no fee. That sounds great—free is free, right?

Not quite.

The fee is the part you notice, but it’s rarely where most of your money goes. The real cost of moving money between currencies is usually hidden in the exchange rate, and you might not spot it unless you know what to look for. That’s where the money really goes.

A "£0 fee" transfer can actually cost you more than one with an upfront charge. For expats who move money across borders every month or in large amounts, these hidden costs can add up to thousands over time.

Here's where the money really goes—and how to keep more of it.

The four places expats lose money

1. The exchange rate margin (the big one)

Every currency has a "real" rate, called the mid-market rate. This is the rate you see on Google or a financial news site, sitting halfway between what buyers and sellers are quoting. It’s the honest benchmark, but almost nobody offers it to you.

Instead, providers give you a slightly worse rate and keep the difference. That gap is called the margin, or spread, and it’s usually the highest cost in most transfers. The margin is built into the rate instead of being shown as a separate charge, so it often doesn’t feel like a cost.

The size of the margin can vary a lot. High-street banks often add a few per cent, while specialist currency providers usually offer rates much closer to the mid-market rate.

For a small transfer, the difference might seem small. But for a house deposit, a monthly salary sent home, or moving a retirement fund, a few per cent can mean a lot of money.

2. The fees

Then there are the visible charges, and there can be several. There’s a sending fee from your provider, a receiving fee at the other end, and for some routes, an intermediary or correspondent bank might take a bit more in transit, often without warning.

Individually, these fees are small, but when they add up every month, they matter. The trap is judging a transfer by its fee alone and ignoring the margin, which is exactly what "no fee" marketing encourages.

3. Timing

Exchange rates move every day, sometimes sharply. Convert a large sum on an unlucky day, and you can lose more to a rate swing than to fees and margin combined.

If you’re moving a property deposit or a lump sum for retirement, the difference between a good week and a bad one can be thousands, even if you send the same amount of money and do nothing wrong.

The point here isn’t to try to predict the markets. Nobody can do that reliably, and treating your life savings like a bet is a quick way to lose sleep and money. The real issue is that leaving a big, time-sensitive conversion up to chance on one day is a risk you can avoid.

4. The money you're not even moving

The most subtle cost is exposure you didn’t choose. Money sitting in one currency while your life or your future is based in another can quietly gain or lose value as exchange rates change, even if you don’t move it.

Savings you'll eventually spend in pounds, held in dirhams or dollars, are exposed to every move in the rate between now and the day you convert. That's not a transfer cost; it's a standing risk, and it's a big enough subject to deserve its own article.

How much does all this actually cost?

Here’s a simple example. Suppose you send the equivalent of £2,000 home every month, and between margin and fees, you lose about 3% each time. That’s roughly £60 a month, about £720 a year, or more than £7,000 over a decade, just on money you were moving anyway.

Now imagine a one-off transfer. On a £100,000 transfer, such as for a property purchase or consolidating savings, a 3% all-in cost is £3,000. If the exchange rate moves against you, you could lose several thousand more.

None of these numbers seems dramatic on its own. That’s exactly why they often go unnoticed.

Remember, these figures are just examples to illustrate the size of the problem, not specific quotes. Your actual costs depend on the currencies, amounts, and provider you use.

The first thing to check is the exchange rates. Use our currency exchange calculator to discover the latest rates and make your money go further.

How to lose less

The good news is that you can fix most of this, and you don’t need to become a currency trader to do it.

Compare the all-in rate, not the fee

The only number that matters is how many pounds actually arrive in the destination account. Take the amount you’re sending, check the mid-market rate at that moment, and see how far the quote falls short after all fees and the margin are included. A "£0 fee" offer with a poor rate can easily lose to a small-fee offer with a better rate.

Look beyond your bank

High-street banks are convenient but rarely offer the best currency rates. Dedicated, regulated currency providers usually offer rates much closer to the mid-market. Before using any provider, make sure it’s properly regulated in the right country and that your money is safe. Convenience doesn’t matter if the provider isn’t reliable.

Use a regular transfer arrangement for recurring sums

If you send money home every month, a standing arrangement that converts automatically spreads your transfers across different rates instead of relying on just one day. This helps smooth out the ups and downs over time.

Set rate alerts, and don't leave big conversions to the last minute

For a large, planned conversion, give yourself a window of time and be ready to act when the rate is reasonable, instead of being forced to transact on a deadline. This helps reduce avoidable risk, rather than trying to predict the market.

A note for expats in the Gulf

If you’re in the UAE, there’s something important to know. The dirham is pegged to the US dollar, so it hardly changes against the dollar. This can make you think currency isn’t your problem.

But when you send money to the UK, you’re really converting dollars into pounds. The rate that decides how far your dirhams go back home is the pound-to-dollar rate, and that changes a lot.

In simple terms, when the pound is stronger, your dirhams buy fewer pounds. When the pound is weaker, they buy more. If you’re supporting family in the UK, paying a UK mortgage, or saving money to bring home one day, watch the pound-to-dollar rate, not just the dirham.

When it's worth getting proper advice

For the occasional modest transfer, a bit of care and a good provider are all you need. But when the sums get large, or the exposure becomes long-term, like a property purchase, moving a pension, regular cross-border income, or savings in one currency set aside for a future life in another, the stakes are high enough to be worth planning instead of improvising.

That’s when talking to a regulated adviser can help you see the whole picture: not just the cost of each transfer, but the currency exposure across your income, savings, and long-term plans.

If you’d like help figuring out where currency is quietly costing you and how to manage it as part of your wider finances, get in touch with Holborn Assets.