Swift payments and wire transfers: what they are and when you need one

A wire transfer is an electronic movement of money directly between banks or financial institutions, processed individually rather than in a batch with other transactions¹. In the UK the word "wire transfer" is mostly used to mean an international payment sent through the SWIFT network, which carries payment instructions between banks worldwide and allows payments in any currency². A typical bank charge for a Swift payment is around £20, and a cross-border transfer can take three to five days, with up to 6% of the amount chewed up in fees along the route².

For everyday domestic payments you almost never need one. Money between UK accounts moves through interbank systems such as Faster Payments, which offers near immediate electronic transfers sent directly from your bank account⁴. A wire transfer comes into its own when the recipient is abroad, when the amount is large or when the payment is time-sensitive, because it is processed individually and can reach banks anywhere in the world¹.

A wire transfer sends money directly from one bank to another

The simplest way to understand any bank payment is that it moves money directly from a payer's bank account to a payee's bank account, without the need for intermediaries such as credit or debit cards⁷. A wire transfer is the international version of that idea: an electronic movement of money directly between banks or financial institutions, with each payment processed individually rather than bundled into a batch with other transactions¹.

That individual processing is what sets a wire apart from the transfers most people make every day. Because each payment is handled on its own, wire transfers are often available faster than a standard bank transfer for cross-border purposes, but typically with a higher fee¹. They are frequently used for international transfers, particularly for larger or more time-sensitive amounts¹.

For comparison, the domestic alternatives work differently. Faster Payments provides near immediate electronic transfers sent directly from your bank account⁴, and CHAPS is a system used for high-value transactions, where money is transferred from one bank to another on the same day⁸. Pay by Bank is a newer option that transfers money to a firm from your current account instead of using a card⁹. None of these requires you to know anything about international banking codes; they run on UK sort codes and account numbers.

Wire transfers also sit alongside a separate category of service. Under the payment services rules, "money remittance" means a service for transmitting money, or any representation of monetary value, without any payment accounts being created in the name of the payer or the payee¹⁰. That is the world of cash pickup and counter services, where you hand over money and someone collects it abroad. A wire transfer, by contrast, goes from a bank account to a bank account. The two are regulated differently and cost different amounts, and the rest of this page is about the bank-to-bank kind. The wider options for sending money abroad are covered separately.

Swift payments: how international transfers travel between banks

An international money transfer allows people to send funds from a UK account to an account in a different country¹¹. The network that carries most such payments between banks is SWIFT, which has a global reach, allowing financial institutions to send and receive money worldwide². SWIFT itself does not move your money. What travels over the network is a message: a structured instruction from your bank to the recipient's bank saying who is being paid, how much, and in what currency.

The use of digital payments to transfer funds directly from one bank account to another has grown steadily, and the Payment Systems Regulator notes that this is happening particularly through interbank payment systems and the Faster Payments Service¹². But Faster Payments only reaches UK accounts. When the destination is abroad, the instruction has to hop between banks, and that is where SWIFT comes in.

A single payment can involve more than two banks. If your bank and the recipient's bank do not deal directly with each other, one or more banks in between pass the payment along, and each may take a fee or apply its own exchange rate. That is why the amount that arrives can be smaller than the amount you sent, and why the timing is measured in days rather than seconds. The page on how international payments work goes into this route in more detail.

One piece of jargon worth knowing is the MT103. It is the standard Swift message that confirms a payment has been sent, and the Financial Ombudsman Service asks consumers to provide any messages used for the international money transfer, such as a SWIFT or an MT103, when investigating a complaint¹¹. If a payment goes missing, that message is what helps trace it. The page on tracing, cancelling or recalling a payment explains what to do.

SWIFT codes: 8 or 11 characters that identify the bank

Every bank on the SWIFT network is identified by a SWIFT code, sometimes called a BIC (Business Identifier Code). A bank's SWIFT code is unique and can contain eight or 11 characters, which all convey specific details of the bank⁵. The code is the international equivalent of a sort code: it tells the sending bank exactly which institution, and in the longer form which branch or office, should receive the payment instruction.

The structure is fixed. The first four characters are the bank code, so Starling's bank code is SRLG, followed by a country code, a location code and, in the 11-character version, an optional code pinning down a specific branch or department⁵. Because the format is standard worldwide, a SWIFT code works the same whether the receiving bank is in Germany, India or the United States.

When a UK organisation needs to receive money from abroad, it will typically give you its IBAN, a BIC, or a bank or brand code and account number¹³. The BIC and the SWIFT code are the same thing under different names, so do not be put off if a form asks for one and a statement shows the other. If you are sending rather than receiving, the safest approach is to copy the recipient's SWIFT code from a document they have given you, or from their bank's own website, rather than from a search result, because a wrong code sends the payment to the wrong institution. The page on details needed to pay someone abroad lists what each destination country requires.

Details you need to send a Swift payment

For any bank transfer you need the amount you want to send, the full name of the person you are sending money to, their 6-digit sort code, their 8-digit account number, a payment reference, and whether you want the money sent straight away or at a later date and time¹⁴. A Swift payment needs more than that, because the domestic sort code and account number do not mean anything to a bank abroad.

What replaces them depends on the destination. Sending a wire to a bank account in the United Kingdom typically requires the recipient's IBAN and the bank's sort code, while a wire to many other corridors instead requires a SWIFT/BIC code and a local account number, with no IBAN involved at all¹. So the exact shopping list of details changes by country: the United States and some others use routing numbers and local account numbers, much of Europe uses IBANs, and some corridors use account numbers in a local format that only that country's banks recognise.

In practice, before you send anything, gather:

• the recipient's full name as it appears on their bank account
• their account identifier, whether that is an IBAN, a local account number or both
• the recipient bank's SWIFT/BIC code
• the amount and the currency you want them to receive
• the country, and sometimes the city or branch, of the receiving bank
• a payment reference or reason for the payment, which some countries require¹⁴

Two habits reduce the risk of a payment going astray. First, once you have sent money to someone once, their details will be stored and you will not need to enter them next time¹⁴, so the first payment is the one to get right. Second, be alert to any change of bank details. Organisations increasingly confirm changes by message: the Student Loans Company sends a text message to confirm bank detail changes a student has requested¹⁵, and the warning is the same for any payee. If a supplier, solicitor or family member suddenly emails new account details, verify the change through a channel you already trust, because governing bodies processing transfers must check that at least one of the conditions for the transfer to proceed is met¹⁶, and a payment you authorised to the account you were told to use is far harder to recover. Some organisations also require notification if you pay them this way: the Help to Buy scheme states you must tell its customer service team if you pay by bank transfer¹⁷.

Receiving money from abroad: IBAN and Swift/BIC

Anyone who wants to transfer money internationally usually needs to use an IBAN and SWIFT/BIC code to do so⁵. If you are on the receiving end, that means the sender abroad will ask you for two things: your IBAN, which identifies your account, and your bank's SWIFT/BIC code, which identifies the bank. Both are shown on your statements and in your banking app.

The same details come up whenever a UK organisation pays someone overseas or receives money from an overseas payer. The International Pension Centre, for example, needs the international bank account number (IBAN), a Business Identifier Code (BIC), previously Bank Identifier Code, or a bank or brand code and account number for overseas accounts when paying the State Pension abroad¹³. If you retire abroad or spend part of the year outside the UK, giving the payer the correct IBAN and BIC is what stands between you and a delayed pension payment.

Be aware that receiving is not always free. There is usually a fee for cross-border payments, and your own bank may also charge for receiving money from abroad, so the amount credited to your account can be less than the amount the sender instructed¹⁸. Some senders choose to pay all the charges themselves so the recipient gets the full amount, and some route the charges to the recipient. It is worth asking your bank what its incoming fee is before you give your details for a large payment. The page on receiving a payment from abroad covers the details to give and the fees to expect.

Fees and charges: a flat fee of around £20 is typical

The headline charge for sending a Swift payment through a bank is a transaction fee of around £20². Wire transfers have historically carried a flat fee that is often higher than other transfer methods¹, which is the price of individual processing and a worldwide reach. Fees vary by amount, destination, and delivery method, and are subject to change¹, so the figure your bank quotes today may not be the figure next year, and two banks can charge different amounts for the same payment.

The flat fee is rarely the whole cost. A report to Parliament on cross-border transfers found that up to 6% of the amount is chewed up in fees, once the charges taken by banks along the route and the exchange rate margin are counted³. On a large payment, the percentage cost matters more than the flat fee: 6% of a big sum dwarfs the £20 sending charge, while on a small payment the flat fee dominates. That is why the total cost, not the advertised fee, is the number to compare.

Your options for reducing the cost depend on the payment. Banks are one route, but the Financial Ombudsman Service's remit for complaints about sending money abroad also covers a specialist money transfer and remittance business, an online payment service, or a foreign exchange specialist¹¹, so the market is wider than the high street. The comparison between banks and specialist providers sets out the differences, and the page on exchange rates explains the margin that is often the largest hidden cost. For regular commitments such as a foreign mortgage or bills, regular payments abroad can work differently from one-off transfers.

How long a wire transfer takes

A cross-border transfer takes three to five days, according to the same report to Parliament, with up to 6% chewed up in fees along the way³. Wire transfers have historically been associated with same-day or next-day availability of funds once received, though actual timing still depends on the specific banks and countries involved¹. Transfer speed is an estimate depending on payment and delivery method, transaction review, and system availability¹.

The gap between those two pictures is explained by the route. A wire between two banks that deal directly with each other, in countries with compatible banking hours, can move quickly. A payment that passes through correspondent banks, crosses time zones, or needs a currency conversion or a security check takes longer. Weekends and public holidays in either country add waiting days, because a payment instructed on a Friday afternoon may not start moving until Monday in the destination country.

Cut-off times matter too. Banks set a daily deadline for processing international payments, and an instruction received after it is treated as received the next working day. A Financial Ombudsman case study records a business that had missed that day's cut-off but could complete the transfer by the next working day¹⁹. If timing matters, ask your bank for the cut-off for the specific currency and country before you instruct the payment.

The page on how long an international payment takes breaks down the causes of delay and what to do if a payment is late.

How to make a Swift payment: app, online or through your bank

Most banks let you make international payments through the same channels as domestic ones. Online banking provides a quick and easy way of checking your balance, paying bills and transferring money via smartphone, tablet or computer²⁰, and with most banks you can contact them and give the details of how much you want to transfer and when online or through their mobile banking app²¹. Some accounts can be operated in-branch, online, through the mobile app or by phone²², so a Swift payment can usually be made wherever you bank.

The practical steps are:

1. Find the recipient's details: their IBAN or local account number, and their bank's SWIFT/BIC code¹.
2. Check your bank's international payment fee and the exchange rate it will apply, and ask when the cut-off time is².
3. Add the recipient as an international payee in your app or online banking, or take the details to a branch or phone banking²⁰.
4. Enter the amount, choose the currency and decide who pays the charges along the route.
5. Confirm the payment and keep the confirmation, including any SWIFT or MT103 message, in case the payment needs to be traced¹¹.

Because the details are longer and less familiar than a sort code and account number, it is worth reading each field back against the recipient's own document before confirming. A single wrong character in an IBAN or SWIFT code can send the payment to the wrong bank or stop it entirely, and correcting it after the event is slow and uncertain. If you are sending a large sum, expect additional identity and source-of-funds questions, which are covered on the pages about sending large sums overseas and identity and security checks.

Where refund protection does not reach: payments to foreign accounts

The strongest protection most people have heard of is the reimbursement scheme for authorised push payment scams, where someone knowingly or unwittingly transfers money from their own bank account to another which belongs to a scammer²³. But that protection has a boundary: the reimbursement protections apply to UK Faster Payments only, and they do not apply to international transfers, debit, credit card or crypto payments²⁴.

That boundary matters because the warning signs of a scam are the same whatever the payment method. A scammer may pretend to be from a bank's fraud team, or another trusted organisation, and tell the victim that their money is at risk and they need to move it into another account²³. If someone is asking you to pay by bank transfer, it could be a sign that it's a scam²⁵. When the destination account is abroad, the safety net that would catch a domestic scam payment is largely absent.

Domestic protections also do not travel. Confirmation of payee requires banks to check the name provided on the transfer against its account records and alert the customer if the information doesn't match²⁶, but that check works within UK payment systems. An international wire relies on the details you entered and the banks along the route, not on a UK name-check.

What protection does exist:

• An unauthorised transaction, meaning a payment from your bank account you don't recognise, is treated differently from a payment you were tricked into making, and you may be able to get your money back²⁷.
• The Financial Ombudsman Service can consider complaints about money sent abroad, whether the business complained about is a high street bank, a specialist money transfer and remittance business, an online payment service or a foreign exchange specialist¹¹.
• Free, impartial guidance on shopping and paying safely is available from MoneyHelper²⁵.

The pages on scams involving payments abroad and your rights under the Payment Services Regulations set out where the rules do and do not reach.

Once sent, a wire transfer usually cannot be reversed

The single most important thing to understand about a wire transfer is that it is a one-way door. It's unlikely you'll be able to get your money back if you've paid through a wire service such as MoneyGram, PayPoint or Western Union⁶, and the same logic applies to a bank Swift payment: once the recipient's bank has credited the account, no UK rule forces it to return the money.

That is why the checks before sending matter more than the remedies after. If someone is asking you to pay by bank transfer, it could be a sign that it's a scam²⁵, and a scammer pressing you to send money abroad quickly, or to a changed account, is relying on the fact that the payment cannot be unwound. Take the pressure itself as a warning: legitimate organisations do not mind you calling back on a number you already have, or waiting a day to check bank details.

If a payment does go wrong, act immediately. Complain to the sending business first, and keep every document: the payment confirmation, any messages used for the international money transfer such as a SWIFT or an MT103, and the correspondence¹¹. Those messages are what allow a payment to be traced along its route, and they are the evidence the Financial Ombudsman Service will ask for if the business does not resolve the complaint¹¹. An ombudsman case about an exchange rate that disappointed a sender shows the kind of complaint that can be looked at, including where a business missed a cut-off and completed a transfer a day later than expected¹⁹.

Recalling a payment is sometimes possible if it is caught before the funds are released, but it is not guaranteed, it usually costs a fee, and it depends on the banks along the route agreeing. The page on tracing, cancelling or recalling a payment explains what a recall involves and what to do if the money never arrives.