Sending a large amount abroad: limits, checks and rate risk

Small transfers are a rounding error. Large ones are a project.

Once the amount runs into five or six figures, three things change at the same moment. The provider starts asking questions. The exchange rate becomes a real source of risk. And the cost of a bad rate stops being annoying and becomes a number you’d rather not look at. Deal with all three before you press send.

Expect questions, and answer them with paper

Big transfers get checked. That isn’t personal. Payment firms have to know their customers and keep an eye on whether activity makes sense. In the UK, the Money Laundering Regulations 2017 tell firms to understand the purpose of the relationship and to monitor transactions, including the source of funds where necessary. Where necessary is the key phrase: there is no single magic figure that triggers a check. Firms set their own risk-based triggers, so a payment far bigger than your normal pattern can prompt a request even if a bigger payment from someone else wouldn’t.

The US works differently. The famous $10,000 line is for physical cash handed over to a bank, reported on a currency transaction report. FinCEN’s own pamphlet says so. An ordinary electronic transfer isn’t a cash transaction, so don’t confuse the two. But providers there ask questions on large payments too, for the same underlying reasons.

So what do you do? Have the story ready, in documents. A currency specialist’s guidance lists the usual evidence by source of money:

Property sale: completion statement and the bank statement showing the proceeds landing.
Salary and savings: payslips, plus statements showing the balance building over time.
Inheritance: grant of probate or an executor’s letter.
Gift: a signed gift letter and evidence of where the donor got it.
Business sale or dividends: sale agreement, company accounts or dividend vouchers.

A spoken explanation isn’t enough on its own. The papers need to show the amount, the date and a trail into your account, and the numbers have to match. Documents in another language may need a certified translation, so ask early. Our guide to transfer limits covers where the ceilings come from; this piece is about what happens when you’re near the top of them.

Do the checks a week early

The single most common mistake is leaving it to the day the money is due. Verification, a source-of-funds review and a first-time large payment all take human time. Some firms clear it in hours. Others take days, especially if a document is unclear.

Do this instead. Open the account, finish identity checks, and tell the provider the amount and purpose before you need to send. Ask what they’ll want to see. Then upload it. A payment that is already approved on the day is worth more than a slightly better rate you can’t use.

Where rate risk really bites

Exchange rates move all day. You can’t predict them, and neither can anybody else. What you can do is measure your exposure.

Take an illustrative case. Someone wants to move 60,000 GBP to euros for a house purchase closing in two months. Suppose the rate is 1.15 (made up for the example). That’s 69,000 EUR. If the pound drops 1% against the euro before they send, they receive about 690 EUR less. If it rises 1%, they get 690 EUR more. Same coin, two sides. The trouble is that a house closing doesn’t care how you feel about the coin. The seller wants the money on the date in the contract.

That’s why people with a fixed date and a fixed amount look at tools that remove the guessing. Our hedging basics piece explains the idea in a business setting. For a one-off personal transfer, there are really two common tools.

Forward contract

You agree today to exchange a set amount at a set rate on a future date. OFX’s published terms give a sense of the mechanics: bookings from five days to 12 months ahead, a deposit of 10% generally for individuals, and extra funds possible if the market moves a lot after booking. The contract is binding. You must settle the full amount by maturity, and if the market moves in your favour you don’t get the benefit. As of November 2026 those were OFX’s terms for US clients; other providers differ, so read the actual contract. Also note that the forward rate isn’t the spot rate. It reflects the interest-rate gap between the two currencies and the length of the contract, plus the provider’s margin.

Limit or target order

You tell the provider the rate you’d like and the order executes if the market reaches it. Useful if you have flexibility. Dangerous if you set a target too optimistic and the deadline arrives anyway. Always ask what happens at the deadline: does it convert at the market, or does the order simply expire?

Neither tool is free insurance. A forward removes the downside and the upside together. A limit order removes the stress and keeps the deadline problem. Pick based on how bad it would be if the rate moved 2% against you, then decide whether peace of mind is worth the loss of any upside.

The margin is the number that grows with you

On a small transfer, a bad rate costs lunch. On a large one, it costs a holiday, or a deposit on something.

Same example: 60,000 GBP at a mid-market rate of 1.15. Suppose Provider A adds a 0.3% margin and Provider B adds 1.5% (both illustrative). A takes about 207 EUR from the result. B takes about 1,035 EUR. The gap is 828 EUR, and nobody put a line called fee on the screen. Our guide to the mid-market rate vs the rate you actually get explains why the gap hides in the rate.

Amount (GBP)	Cost at 0.3% margin (EUR)	Cost at 1.5% margin (EUR)	Gap (EUR)
2,000	6.90	34.50	27.60
20,000	69.00	345.00	276.00
60,000	207.00	1,035.00	828.00

All illustrative, at a made-up rate of 1.15. The point is the shape: the percentage stays the same and the money grows with the amount. So with big sums, ask for a quote in writing, ask whether the rate is negotiable, and get two or three. Dealing desks at specialist firms often quote large amounts by phone for exactly this reason. Put the quote beside the live mid-market figure on a page like GBP to EUR (rates refreshed hourly; the grid shows many pairs at once) and calculate the gap yourself.

Bank wire or specialist? Both are fine

A big transfer doesn’t have to go through an app. Banks do wires, and for very large amounts that can be reasonable, especially if the bank has a relationship manager who’ll talk. The catch is the rate, which is usually worse than a specialist’s, and possible fees from banks along the way. We cover the difference in wire transfer vs online transfer service.

Whatever you pick, ask four things:

What is the per-transfer and the daily limit for my account, and can it be raised?
What exactly is the rate, and how much of it is margin?
Are there any fees on arrival, either from your side or from an intermediary bank?
If something is held or returned, who do I speak to, and how fast?

Where does the money sit while it travels?

This one gets skipped. A bank in the US is covered by FDIC insurance up to $250,000 per depositor, per bank, per ownership category. But the FDIC says that cover applies only to deposits at insured banks and does not extend to money held at a non-bank payment company. Money in transit at a non-bank is protected, if at all, by other rules such as safeguarding requirements, which differ by country. You don’t need to panic. You need to know. Ask the provider how funds are protected, and don’t leave a large sum parked in a payments app for weeks.

Scams love big numbers

Fraudsters follow the money. The classic large-transfer scam is the fake invoice: an email that looks like your solicitor, estate agent or builder, with new bank details. Don’t act on it. Phone the person on a number you already had, not one in the email, and confirm the account before sending. Our scam guide has the longer list.

Another smart habit: send a small test payment first if the timeline allows. It costs a little extra and proves the recipient details are right. Then send the balance.

Splitting a payment: only for good reasons

If your provider’s cap forces you to send in several pieces, that’s normal, and you should tell them what’s happening. The rate will drift between pieces, which is one more reason to ask for a higher limit instead. What you must not do is split a payment deliberately to stay under a reporting line. In the US, structuring cash transactions to avoid a report is a federal crime even when the money is clean, per FinCEN. Keep it simple and transparent.

Nothing here is legal, tax or financial advice. Large transfers can have tax consequences at either end, and rules change. Check with your provider and an adviser before you send.

Sources

Checked: November 2026