Yes, you can deposit US dollars into a UK bank account, but your bank will convert them to pounds sterling and charge you a fee for doing it

Most UK banks accept US dollar deposits. The process is straightforward: you hand over the dollars (in cash or by cheque), the bank converts them at their own exchange rate, deducts a conversion fee, and credits your account in pounds. What you receive depends on three things the bank controls: the exchange rate they use, the conversion fee they charge, and whether they process the deposit at all. Some banks will refuse cash deposits over a certain amount or require advance notice.

The catch is cost. A typical UK bank charges between £10 and £25 to convert foreign currency, plus they use an exchange rate that is worse than the mid-market rate you see online. If you are converting a small amount—say £200 worth of dollars—the fee alone can eat 5 to 10 percent of what you receive. For larger amounts, the fee matters less, but the exchange rate markup still costs you.

Key Takeaways

  • UK banks convert US dollars to pounds at their own rate, which is typically 2 to 4 percent worse than the mid-market rate, and charge a separate conversion fee of £10 to £25.
  • Cash deposits and cheque deposits follow different routes: cash goes through the teller, cheques take 5 to 10 working days to clear and may incur additional fees.
  • Your bank may refuse large cash deposits without advance notice or may have daily or monthly limits on foreign currency deposits.
  • Specialist currency brokers and peer-to-peer transfer services often offer better exchange rates than high street banks, though they charge their own fees.

How UK banks handle US dollar cash deposits

When you walk into a branch with US dollar notes, the teller will ask how much you want to convert and may ask why. Banks are required to report large cash transactions (over £10,000) to the Financial Conduct Authority, so do not be surprised by questions. The teller will count the notes, check for damage or counterfeits, and then either convert them on the spot or send them to a processing centre.

The conversion happens at the bank's own rate, which they set daily. This rate is not negotiable and is usually 2 to 4 percent worse than the mid-market rate—the rate you see on financial websites like XE or OANDA. The difference is how the bank makes money on currency exchange. On top of that, they charge a flat fee: Barclays charges £15, HSBC charges £12, Lloyds charges £10. Some banks waive the fee if you hold a premium account, so check your account terms.

The pounds will usually hit your account the same day or the next working day. However, some banks hold the money for 24 hours as a fraud check, so do not assume it is available immediately.

US dollar cheques and bank transfers

If you have a US dollar cheque—from an employer, a refund, or a sale—you can deposit it at a UK bank. The bank will send it to a correspondent bank in the US for clearing, which takes 5 to 10 working days. During that time, the bank holds the funds and does not credit your account. Once the cheque clears, they convert the dollars to pounds using their exchange rate and deduct a fee, usually £15 to £25.

Bank transfers from a US account to your UK account follow a similar path. You provide your UK bank details to the sender, they initiate a wire transfer (often called a SWIFT transfer), and the money arrives in 3 to 5 working days. Your UK bank will convert it and charge a fee. The exchange rate is usually the same as for cheques, but some banks charge more for incoming international transfers than for cash deposits.

If the cheque or transfer is large, ask your bank in advance what the total cost will be. Some banks quote the fee but not the exchange rate markup, so you may not know the true cost until the money lands.

Limits and restrictions on foreign currency deposits

Most UK banks do not have a hard limit on how much foreign currency you can deposit, but they do have practical restrictions. Many branches will not accept more than £5,000 worth of cash in one transaction without advance notice—they need to order the currency from their processing centre. If you want to deposit £20,000 in dollars, call your branch a few days ahead and ask whether they can handle it.

Some banks also limit how often you can deposit foreign currency. A few will only accept one foreign currency deposit per month per account, or they will charge an extra fee for multiple deposits. Check your account terms or ask your branch.

If your account is flagged for any reason—unusual activity, a recent address change, or a large deposit—the bank may hold the converted funds for up to 10 working days while they investigate. This is rare but happens, especially with amounts over £10,000.

Better exchange rates: alternatives to your bank

If you are converting a large amount, your bank's rate and fee will cost you significantly more than alternatives. Specialist currency brokers like Wise, OFX, and Remitly offer exchange rates much closer to mid-market—often within 0.5 to 1 percent—and charge a flat fee instead of a percentage markup. For £5,000 in dollars, you might save £50 to £150 by using a broker instead of your bank.

Wise (formerly TransferWise) is the most popular option in the UK. You create an account online, transfer your dollars to their US account, and they convert and deposit pounds into your UK account. The process takes 1 to 2 working days, and their fee is transparent upfront. OFX works similarly but is better for larger amounts (£10,000 and above). Remitly is cheaper for small amounts under £1,000.

The trade-off is that these services do not work with cash. You need a US bank account or a way to send dollars electronically. If you have physical dollar notes, your bank is your only option unless you first convert the cash to a US bank transfer.

What happens if your bank refuses the deposit

Some banks will refuse to accept foreign currency deposits, especially cash. This is rare with major high street banks but common with online-only banks and smaller institutions. If your bank refuses, you have two options: switch to a bank that accepts foreign currency, or use a currency broker and have the dollars sent electronically instead.

If your bank accepts the deposit but the funds are held or delayed, ask them in writing why and how long the hold will last. Banks must release held funds within a reasonable time—usually 10 working days—unless they have a specific compliance reason to hold longer. If they hold the money beyond that without explanation, escalate to their complaints team.

Frequently Asked Questions

Do I need to tell my bank I am depositing US dollars?

You do not need advance permission for small amounts (under £5,000), but it is wise to call your branch if you are depositing more than that or if you plan to deposit cash. Some branches need to order currency from their processing centre, and a quick call saves you a wasted trip.

What exchange rate will I get?

Your bank sets the rate daily and does not publish it in advance. You can ask the teller or call the branch before you go in, and they will quote you a rate valid for a few hours. The rate is usually 2 to 4 percent worse than the mid-market rate shown on XE or OANDA.

Can I deposit US dollars if I do not have a UK bank account yet?

No. You need an open account at a UK bank to deposit money. If you are new to the UK and do not have a bank account, you will need to open one first. Most banks require proof of address and ID, which can take a few days to process.

Will I be taxed on the dollars I deposit?

The deposit itself is not taxed—you are converting money you already own. However, if the dollars came from income (wages, freelance work, investment gains), that income may be taxable in the UK depending on your residency status and tax obligations. Speak to a tax adviser if you are unsure.

What if the dollar cheque bounces after I spend the money?

Your bank will reverse the deposit and deduct the pounds from your account. If your balance goes negative, you will owe the bank the shortfall plus overdraft fees. This is why banks hold cheques for 5 to 10 days—to make sure they clear before you can spend the money.