The short answer

A forward contract is an agreement to exchange a set amount of currency at a fixed rate on a future date. You pay a deposit now and the balance when the payment is due. Whatever happens to the pound in between, your cost in pounds is known. It's the right tool for a known future payment in baht — a condo completion, off-plan instalments, school fees or a visa deposit. Vita Capital, our FX partner, offers forward contracts to private clients so you can "lock in today's exchange rate for future payments", with a specialist to set it up with you.

What a forward contract is

A forward contract has four parts: the currencies (pounds into baht), the amount, the rate (fixed today), and the settlement date (when you'll pay the balance and receive the baht). The rate is agreed now; the money moves later.

Think of it as booking your exchange rate in advance, the way you'd book a flight. If prices go up before you travel, you're protected. If they go down, you've still paid the booked price. The point isn't to beat the market — it's to know your number.

• It's binding. You must buy the agreed amount on or before the date.
• It removes uncertainty both ways. You're protected from a fall in the pound but won't benefit from a rise.
• It needs a deposit, held as security until the contract settles.
• It's not a bet. The forward rate isn't a forecast — it's today's rate adjusted for interest rates.

How a forward contract works, step by step

1. Know your payment — the baht amount and the date it's due, from your sale contract or invoice.
2. Ask for a forward quote through our team. Vita Capital's specialist confirms the rate and terms.
3. Book the contract. The rate, amount and date are fixed.
4. Pay the deposit — usually within one business day of booking.
5. Pay the balance in pounds before the settlement date. Some contracts let you draw down early.
6. The baht are paid to the seller, developer, lawyer or your own Thai account, at your fixed rate.

How the forward rate is set

A forward rate is today's spot rate adjusted for the difference in interest rates between the two currencies. UK rates (Bank Rate 3.75%, September 2026) are higher than Thailand's (1.00%, August 2026), so a forward for selling pounds is usually a little below spot — the cost of certainty.

Illustration only, from central bank policy rates at spot ฿44.38 = £1 (12 October 2026). Real forward rates use market interest rates and include the provider's margin; your specialist quotes the actual rate.

Where to book a forward contract

Forwards are a specialist product. Our number one, and the alternatives for money you're sending now.

A condo example: three outcomes

A ฿6,000,000 condo, completing in six months. You fix a forward at an illustrative ฿43.78. Here's what you pay in pounds compared with converting at spot on completion day.

Illustration only, before any margin or fees. Forward rate from the interest-rate illustration above. A forward gives certainty, not a guaranteed saving — you give up gains to remove losses.

What the example tells you

A forward contract isn't about winning. In two of the three outcomes above, converting at spot on the day would have cost less. But you couldn't have known that in advance — and the one outcome where it helps is the one that can wreck a purchase.

For most buyers, the question is simple: could I afford it if the pound fell 5% or 10% before completion? If the answer is "not comfortably", a forward is doing its job. If you have plenty of headroom and don't mind the swing, converting at spot — or using a limit order to target a better rate — may suit you better.

Deposits and margin calls

Because you're not paying the full amount until later, the provider asks for a deposit when you book. It's held as security and counts towards the final payment. Around 10% is common for personal accounts, but it can be more or less depending on the length of the contract and the provider's assessment.

If the market moves a long way against your contract, the provider may ask for a top-up — sometimes called variation margin or a margin call. For example, under terms with a 3% trigger, a 3% move against you prompts a request to restore the deposit, usually within one business day. If it isn't paid, the contract can be closed and any loss passed on to you.

• Keep spare funds available while a forward is open, in case of a top-up.
• Ask what the trigger is before you book — 3%, 5% or something else.
• Ask how quickly a top-up must be paid, and how they'll contact you in Thailand.
• Remember the deposit isn't a fee — it's part of what you'll pay anyway.

Who uses forward contracts

Off-plan instalments: a forward for each payment

Off-plan developments are usually paid in stages over the build. Each instalment can have its own forward, so every payment is fixed in pounds. An illustrative ฿4,000,000 unit:

Illustration only; payment schedules vary by developer. Forward rates from the interest-rate illustration above and exclude the provider's margin. Total fixed: £91,731 for ฿4,000,000.

Pros and cons

When a forward isn't the right tool

Early drawdown and flexible forwards

Dates slip — a completion is brought forward, or a developer calls an instalment early. Many providers let you draw down early: take some or all of the currency before the settlement date. The rate may be adjusted slightly to reflect the shorter period.

Some providers also offer forwards with a window rather than a single date, so you can draw down any time between two dates, in one go or in parts. That suits off-plan instalments and purchases where the exact completion day isn't yet known.

Ask Vita Capital's specialist which structure fits your payment schedule. If your dates are uncertain, say so at the start — it's far easier to build flexibility in than to change a contract later.

What happens on settlement day

A few days before the settlement date, your specialist will remind you that the balance is due. You send the remaining pounds — the full amount at your fixed rate, minus the deposit you've already paid — to the provider's client account. Once it arrives, the provider pays the baht or foreign currency to the account you've named, and sends you a confirmation.

For a condo, that's usually the seller's account or your own Thai account, ready for the Land Office transfer. Keep the confirmation, the forward contract and your Thai bank's credit advice or FET form together with your purchase papers. You'll need them when you register the unit, and again if you ever sell and send the proceeds back out of Thailand.

Questions to ask before you book

• What's the forward rate, and how does it compare with spot today?
• How much is the deposit, and when is it due?
• What triggers a top-up, and how fast must I pay it?
• Can I draw down early, or in parts?
• What happens if my purchase is delayed beyond the settlement date?
• Can you pay the seller, developer or lawyer directly in Thailand?
• Will the money arrive in foreign currency so my Thai bank can issue the FET form?
• How is my deposit held while the contract is open?

When you ask through our team, Vita Capital's specialists answer all of these before anything is booked.

Mistakes to avoid

1. Fixing a forward before the purchase is certain. Wait until the reservation and contract are signed.
2. Fixing the wrong amount. Include the transfer fee, the Land Office costs you'll pay and a small buffer.
3. Choosing a date too tight for completion, with no room for delay.
4. Not keeping funds aside for a possible top-up.
5. Treating a forward as a bet and regretting it if the pound rises.
6. Forgetting the foreign-currency rule for condos — the money must arrive as foreign currency with the right paperwork.

Keeping a large payment safe

Property payments are a target for fraud, especially emails that "update" a seller's or developer's bank details just before completion.

• Confirm the recipient's details by phone on a number from your contract, not an email.
• Pay only into the account in your provider's confirmation.
• Use a private, protected connection for banking from cafés, hotels and condos in Thailand.
• Consider escrow for off-plan or conditional payments.

How we researched this guide

We used Vita Capital's own published information on forward contracts for private clients (October 2026); Equals Money's published explanation of forward deposits and additional deposits (Equals is one of Vita Capital's payment partners); OFX's published forward-contract terms as an industry example; the Bank of England's September 2026 and the Bank of Thailand's August 2026 rate decisions; and the mid-market rate of ฿44.38 = £1 (Wise, 12 October 2026). Forward rates in the examples are illustrations, not quotes. Vita Capital is JLIT's FX and escrow partner; we arrange introductions and may receive a fee, which never changes the rate you're quoted. Checked 13 October 2026. This guide is general information, not financial advice.