No bank has an account with every other bank in the world. It cannot: the relationships, the capital and the compliance work would be endless. So when money has to get from one country to another, it travels through a chain of banks that each know the next party in line, and none of which know the destination.
That is the theory. It is more useful to follow an actual payment, so here is one: £125,000 leaving a London business account on a Thursday afternoon, bound for a supplier's account in Dubai.
Trace one payment into Dubai
The instruction is submitted at 15:40 on Thursday. The bank's cut-off for same-day international payments was 15:30, so nothing happens until Friday morning. Nobody has done anything wrong yet and the payment is already a day old.
On Friday it leaves, and here the first thing worth noticing happens. The sending bank has no relationship with the supplier's bank in Dubai, and no meaningful GBP/AED book of its own. So the payment does not become dirhams. It becomes dollars, because dollars are the currency every bank in the chain can reliably deal in. It will be converted a second time later.
| Hop | What it does | It takes |
|---|---|---|
| Thu · London | Submitted at 15:40, after the 15:30 cut-off. Queued to Friday. | £25 |
| Fri · London | Converts GBP to USD at 1.2553, against a 1.2680 mid-market rate. £125,000 becomes $156,912. | $1,588 |
| Fri · New York | USD correspondent deducts a lifting fee and forwards on. Then the weekend. | $30 |
| Mon · Dubai | Regional correspondent converts USD to AED at 3.6432, against the 3.6725 peg. | AED 4,597 |
| Tue · Dubai | Beneficiary bank credits the supplier and takes a receiving charge. | AED 60 |
| Arrives | Four business days after it was sent | AED 571,494 |
Now do the comparison that matters. Converted once, at the mid-market rates quoted on the same day, £125,000 is worth about AED 582,091. The supplier received AED 571,494. Add the £25 charged on the way out and the transfer cost roughly £2,300 in total, or about 1.8% of the principal.
Of that £2,300, the fees came to about £62: the £25 on the statement, the lifting fee in New York and the receiving charge in Dubai. The remaining 97% was the two exchange rates, and it was never itemised anywhere. The finance team reconciling this payment will find £25 on a statement and reasonably conclude that a wire to Dubai costs £25.
The chain is the cost
Each institution in that chain is doing you a favour it charges for. One takes a wire fee. The next takes its own. Somewhere in the middle, one of them converts the currency and applies a rate that is not the rate you would find if you looked it up. That difference is the largest cost in the transfer and it is the one nobody sends you an invoice for.
This is why the number on your receipt and the number that actually left your account disagree. The fee is disclosed. The spread is not a fee, legally speaking — it is a price. Consumer remittance has disclosure rules that force the rate into the open. Business transfers are explicitly carved out of them.
The fee is the part you can see. The exchange rate is where the money actually goes.
The days are a separate problem
Speed suffers for a different reason. Every hop is its own settlement, subject to its own cut-off times, business hours and public holidays. Our Dubai payment lost a day to a cut-off it missed by ten minutes and two more to a weekend it was never going to clear. No institution in that chain was being slow; each one handled the payment promptly during its own working hours. The delay is a property of the chain rather than of anyone in it.
Because each party knows only its immediate neighbours, none of them can answer the question a finance team actually has, which is where the money is right now. The sender learns that the payment arrived when it arrives, and learns that it failed some days after it failed.
Keeping a route open costs money too
There is a third cost that never appears in any comparison of transfer fees. To move money on a corridor reliably, someone has to keep funds sitting in an account at the other end, ready to pay out. That money is real, it is on the balance sheet, and it earns nothing while it waits. Every new country you want to reach needs its own pool, which is why corridor coverage tends to follow available capital rather than customer demand. If you are the business running the corridor rather than the one sending the payment, we took that apart properly in a separate piece on the two costs underneath every corridor.
What actually changes it
A faster chain is not the answer, because every improvement still has to be negotiated across four institutions that each price and hold the payment. The answer is a route that does not need the chain at all. If a licensed partner converts the local currency to dollars at the origin, and those dollars then move domestically inside the United States to an account the destination institution already holds there, the intermediate correspondents have nothing left to do. There is nobody in between to charge a lifting fee, apply a second spread, or wait for Monday.
That is the route Elytra operates. The sending operator collects local currency on its own licensed infrastructure, a licensed partner handles the conversion, and Fedwire or FedNow carries the dollars to the destination's US-held account, after which only a notification crosses the border. The receiving partner, already liquid in local currency, pays out on domestic rails. Settlement runs end to end in under six hours at under 1% all-in, with the FX inside that number. Elytra holds none of the money at any point — licensed institutions hold and move it at every step, and Elytra tells them where it goes.
We built it because we needed it for our own money, and it turned out to be the more interesting product.
The number worth running
If you move money across a border regularly, the useful exercise is not comparing advertised fees. It is working out your all-in cost: the fees you were shown, plus the difference between the rate you got and the mid-market rate on the day, plus whatever capital you keep parked to make the route work. Most people find it is two to three times what they thought.
That number is the one worth knowing, whoever you end up moving money with.