The invoice is 4,750 euros (about £4,100). That is what the school needs to see land, or the child does not enrol. Not 4,712, not 4,738. The exact number. And your last transfer for something like this arrived a little short, or you have heard from a friend whose did, and now you are sending this one worrying it will happen again.
Money arrives short on this kind of payment for one plain reason. Most international payments travel a route where each bank along the way can take a small fee out of the money in flight, and the school or landlord sees what is left. There is a route that does not do this by rule, and there is a lever on the other routes that closes it. Which one applies to you depends on what the invoice looks like, not on which bank or app you like.
The three routes, and what the invoice tells you about yours
There are three ways money can move from your account to the account on the invoice, and each behaves differently on the “does the exact number arrive” question.
The euro-to-Europe route. If the invoice is in euros and lists a bank account starting with two letters and a number (an IBAN starting with IE for Ireland, ES for Spain, DE for Germany, and so on), the payment travels the system European banks use to move euros between countries. The rules of that system say plainly that no bank along the way is allowed to take a fee out of the money in flight. Your own bank charges you for sending, and that is the only charge. The full 4,750 euros lands.
This is the rulebook, not the good behaviour of any one bank, so Wise, Revolut, Starling and even most UK high-street bank apps will get you there. The three apps do it cheapest.
The modern-app route. If the invoice is in a currency the school, landlord or hospital can accept as a local-currency payment into a local bank account, the modern remittance apps handle it cleanly. Wise, Revolut for the countries it covers, Remitly, WorldRemit, LemFi and Sendwave deliver the payment through a partner inside the destination country rather than through the old international bank system. The number on your screen is the number the recipient sees, because there is no bank in the middle taking a slice.
Wise puts this in writing on its own help page: for the small number of routes where a fee could still be deducted along the way, “Wise predicts these upfront and adds them to your fee, so your recipient still gets the full amount, and there are no surprises on arrival.” That last-mile-inside-the-country trick is what makes this route reliable.
The old international bank route (SWIFT). If the invoice is in US dollars, Australian dollars, Canadian dollars, Japanese yen, or any currency the modern apps do not deliver locally, and it specifies a bank account with a SWIFT or BIC code, the payment travels the old international bank system. On this system, one or two other banks sit between your bank and the school’s bank.
Each of them takes a fee, usually somewhere between £12 and £40, and each fee comes out of the money in flight. On a £3,500 tuition wire sent this way, the school can see £30 to £80 missing on arrival, and nobody warned you. This is the route where the number does not arrive whole by default.
The lever on the old route
The old international bank system does have a lever, and it is the thing to know if the invoice forces you onto it. When you fill in the wire form, there is a choice about who pays the fees the banks along the way charge. The three options have short names in the industry (OUR, SHA, BEN); you may or may not see them by name on your bank app. What matters is which one you pick.
- Sender pays all fees. Your own bank charges you the wire fee plus a fixed amount to cover every bank along the way. The recipient sees the full number on the invoice. This is the one to pick.
- Shared (the default on most UK bank apps). You pay your bank’s fee only. The banks along the way take theirs from the money in flight. The recipient sees a smaller number.
- Recipient pays all. The recipient sees an even smaller number. Never pick this for a school or landlord payment.
Different banks give the “sender pays all fees” option different names.
- HSBC UK. On the international-payment screen, look for “correspondent bank charges” and pick “OUR” or “sender pays”. HSBC adds a fixed charge of about £10 to £25 on top of the base wire fee to cover the banks along the way.
- Barclays. Barclays calls its version the “Overseas Delivery Charge” (ODC). Pick this, and Barclays takes one visible charge that covers every bank along the way.
- Lloyds and Nationwide. The choice may not be clearly exposed on the retail app. If your invoice is a SWIFT wire and one of these is your only account, call the international-payments team, or run this one payment through a Wise Business, Revolut, Barclays or HSBC account.
- Wise Business. In the SWIFT-wire flow, pick the “Guaranteed” delivery option. Wise charges the total upfront and the recipient sees the invoice amount.
- Revolut. Called “Guaranteed SWIFT”. Pick this option, not the cheaper standard one that leaves the fees in the middle.
- Starling. Shows the recipient number on the send screen before you confirm. What it quotes is what the recipient sees.
The rate can move before the money leaves
Even on a route that guarantees the exact amount, you still have to send enough pounds to buy that amount in the invoice currency. If the invoice is 4,750 euros and your app is quoting 1.15 euros to the pound when you fill the form, you need to send about £4,131 at that rate. If the rate moves before the payment actually leaves, the amount that arrives can be a euro or two short purely because of the rate, not because of any fee.
Wise and Revolut lock the rate the moment you confirm the payment, and hold it for the transfer. Some UK bank apps quote a rate at the fill-in step but do not lock it until the payment is submitted, or, worse, processed the next working day. If you are paying an institution and the rate is not locked, either send it earlier in the day when the market is moving less, or add one or two pounds of headroom, or use an app that locks. The gap is small in a normal week and can be larger in a bad one.
The other thing that makes a paid invoice fail
The reference number on the invoice. Every school, landlord and hospital invoice has one (a student ID, a tenancy code, a case number). The bank system carries a reference field the payment travels with, and the receiving institution matches your money to your bill using that field.
If the reference is missing or wrong, the exact amount can arrive and the school or landlord still cannot see that it came from you. The child is not enrolled, the flat is not marked paid, the discharge letter does not release. Copy the reference from the invoice character for character, including any letters and dashes, and put it in the payment reference field. It is worth a second look before you press send.
If the money already arrived short
Ask your bank for the MT103. It is a receipt for the payment that shows every bank the money passed through and what each of them took. Any UK bank can produce it within a day or two, usually free. Forward it to the school’s or landlord’s finance office and ask them to waive the shortfall or the late-payment penalty. Most will, because the MT103 proves you sent the full amount and the missing money came out in flight. Then, next time, use one of the routes above so this does not happen again.
The whole answer, in one look
Look at the invoice.
If it is in euros and lists a European bank account, send it as a normal international payment from Wise, Revolut, Starling or your UK bank. The full amount lands by rule.
If it is in a currency the modern apps deliver as a local-currency payment (most of the destinations Boki covers: naira, cedis, pesos, rupees, and many others), send it through Wise, Remitly, WorldRemit, LemFi or Sendwave. The number on your screen is the number that lands.
If it is a SWIFT wire in a currency the modern apps do not deliver locally, or the school or landlord will only accept a bank wire, pick the “sender pays all fees” option on your bank app. It is called OUR on HSBC, the Overseas Delivery Charge on Barclays, Guaranteed on Wise Business, and Guaranteed SWIFT on Revolut. Copy the reference number character for character. Send it early enough that the rate does not move.
That is the whole map. The rest of Boki’s arrival coverage picks up from the other side of the transfer: what a mobile wallet actually is, what cashing out costs, and the receiver-side view of the same “did the exact number arrive” question in does the person receiving pay something on an international transfer?.