The short answer

A good financial plan for an expat in Thailand does six things. It sets a budget in baht and shows how your pound income covers it, with room for the exchange rate to move. It keeps an emergency fund in both countries. It protects you with proper health cover and, if others depend on you, life cover. It organises your pensions, remembering the State Pension is frozen here. It puts longer-term money into investments suited to someone living abroad. And it deals with tax and inheritance in both countries, including wills that work in each. Review it every year. If you'd like help, book a free review with Lawrence.

Why planning is different once you live in Thailand

In the UK, the financial system is built around the assumption that you live, earn, save and retire in one place. Your pension provider, your bank, HMRC and your solicitor all work to the same rules and the same currency. Once you live in Thailand, that assumption breaks in four important ways.

Your income and your spending are in different currencies

Most British retirees in Thailand live on pounds — a State Pension, a workplace pension, rental income from a UK property, interest on savings. But almost everything they spend is in baht. That means every month, the exchange rate decides how comfortable life is. Over the twelve months to October 2026, the pound moved more than 6% against the baht measured only at month ends. A plan that ignores that can leave you short in a bad year.

Two tax systems can apply at once

Spend 180 days or more in Thailand in a calendar year and you become a Thai tax resident. Since 2024, foreign income earned from 2024 onwards that you bring into Thailand can be taxable here. Meanwhile, the UK may still tax UK-source income such as rent, and certain pensions. The UK–Thailand double tax agreement decides which country gets first claim, but only if you organise things so it can work.

Some UK benefits change or stop

The UK State Pension is frozen for people living in Thailand — it won't rise each year as it would in the UK or the EU. Some UK banks and investment platforms restrict or close accounts for people with a non-UK address. ISAs can't be added to once you're non-resident. And UK advisers often can't advise you once you've moved.

Your estate may face two sets of rules

Since April 2025, UK inheritance tax depends on how long you've lived in the UK, not where you were born or "domiciled". Thailand has its own inheritance tax on very large inheritances. And a will written for England may not deal properly with a Thai bank account or condo. Without planning, your family can face delays, costs and tax that could have been avoided.

The six building blocks of an expat plan

Every expat financial plan comes down to the same six questions. Work through them in this order — each one depends on the one before.

A simple framework. Your own priorities depend on your age, family and plans.

1. Cashflow: a budget in two currencies

Start with what life in Thailand actually costs you, in baht. Rent or condo fees, utilities, food, transport, health insurance, visa costs, travel home, helping family — write it all down for a typical month, then add the irregular costs spread over the year: flights, a new scooter, a visa run, a big dental bill. Our Thailand cost of living calculator is a good place to start.

Then list your income in pounds: State Pension, private pensions, rental income, interest. Convert it at today's rate, and then — this is the step most people miss — convert it again at a rate 10% worse. If your budget still works at the worse rate, your plan is resilient. If it doesn't, you need a bigger buffer, a lower budget or a way of fixing some of your costs.

Two practical tools help. First, a regular transfer on a cheap route, so your living money arrives on the same day each month at a fair rate. Second, for the big fixed bills — school fees, a lease, a property instalment — a forward contract that fixes the exchange rate in advance. Our FX partner, Vita Capital, offers both. See recurring international transfers to Thailand.

A budget example: a single retiree

An illustrative monthly budget for a single British retiree renting a condo in a Thai city, at ฿44.38 = £1.

Illustration only — costs vary widely by city, lifestyle and age, and health insurance rises with age. At a 10% weaker pound (฿39.94), the same ฿70,000 costs about £1,753 a month.

2. An emergency fund in both countries

An emergency fund is money you can reach within days without selling investments or breaking a fixed deposit. For an expat, it needs to work in both countries, because emergencies happen in both: a hospital bill in Bangkok, a family crisis in Bristol, a sudden flight home.

A sensible starting point is three to six months of spending in Thailand, held in a Thai savings account, plus a smaller amount in pounds in a UK account for UK costs and flights. If you're on the ฿800,000 retirement deposit route, remember that money is ring-fenced for your visa — it isn't your emergency fund, because drawing it down below the required level can cost you your extension.

• Keep it separate from your visa deposit and your day-to-day account.
• Keep it accessible — instant access, not locked in a fixed term.
• Hold some in each currency so you're not forced to convert in a hurry.
• Top it up after you've used it, before anything else.

3. Protection: health cover first

The NHS doesn't follow you to Thailand. Private hospitals here are excellent and much cheaper than in the UK, but a serious illness, a heart operation or a road accident can still run to hundreds of thousands — sometimes millions — of baht. For most expats, the single biggest financial risk isn't the stock market. It's being uninsured, or under-insured, when something happens.

Health insurance premiums rise with age, and many policies have upper age limits for new applicants, so the age at which you buy cover matters. Pre-existing conditions are often excluded, and it's much easier to get good terms while you're healthy. If you're planning to retire to Thailand, sorting health cover early is one of the most valuable things you can do.

If anyone depends on your income — a Thai partner, children, a family back home — consider life cover too, so they're not left without support. And think about who would manage your affairs if you became unable to: a lasting power of attorney in the UK, and the equivalent arrangements in Thailand.

We arrange health, life and other insurance quotes for expats. Ask our team for an insurance quote.

Where to start

Three practical first steps: a review of the whole picture, a better way to move larger sums, and a cheap route for everyday money.

4. Pensions and retirement income

For most British retirees in Thailand, pensions are the backbone of the plan. They come in three kinds, and each behaves differently once you live abroad.

The UK State Pension

You can have your State Pension paid into a Thai bank account or a UK account, every four or thirteen weeks. If it's paid in baht, GOV.UK applies a 0.39% conversion charge. The crucial point is that it's frozen: yearly increases are only paid to people living in the UK, the EEA, Gibraltar, Switzerland and countries with a social security agreement with the UK. Thailand isn't one of them. A pension that looks generous at 66 will buy noticeably less at 80 as Thai prices rise. Your plan needs other income that can grow to make up the difference.

Workplace and personal pensions

Defined contribution pensions — the pots built up from your own and your employer's contributions — give you choices: take up to 25% tax-free (within the £268,275 lump sum allowance), buy an annuity, draw an income flexibly, or a mix. Those choices interact with Thai tax, UK tax and the exchange rate, so the order and timing of withdrawals matter. Defined benefit (final salary) pensions pay a fixed income and are usually best left where they are; transferring them out is rarely in your interest and needs specialist advice.

Government service pensions

If you were a civil servant, teacher, NHS worker, police officer or in the armed forces, your pension may be a government service pension. Under the UK–Thailand tax treaty, these are generally taxed only in the UK unless you're a Thai national and resident. That's an important difference when you work out what you'll actually receive.

The aim is a retirement income that lasts as long as you do, grows enough to keep up with Thai prices, and is drawn in the most tax-efficient order. That's a calculation worth doing properly — and one of the things a review will cover.

5. Investing as an expat

Money you won't need for five years or more usually needs to be invested to keep ahead of inflation. As an expat, the principles of good investing are the same as anywhere — diversify, keep costs low, match risk to your timescale, don't chase fashions — but the practicalities change.

Where you can invest changes. Many UK platforms restrict new investments or close accounts for non-UK residents. International platforms designed for expats exist, but quality and charges vary enormously. Currency matters more. If you'll spend your money in baht, holding everything in pounds means your future spending power rises and falls with the exchange rate. Tax changes. An ISA stops being useful once you can't add to it, and Thai tax on remitted income may affect when and how you draw money out.

Above all, expats are a favourite target for unsuitable products and outright scams: high-commission savings plans sold as "pensions", unregulated schemes promising fixed high returns, and cold callers who seem to know a lot about you. A good rule is simple: if you don't understand exactly what you're buying, what it costs and how to get your money out, don't buy it.

• Know the total cost — every fund, platform and adviser charge, as a yearly percentage.
• Know how to get out — and what it costs to leave early.
• Know who holds your money — and what happens if they fail.
• Know the currency — and whether it matches how you'll spend.

6a. Tax: living between two systems

Tax is where expat planning most often goes wrong, usually because people assume that leaving the UK means leaving UK tax behind, or that Thailand doesn't tax foreigners. Neither is quite true.

In Thailand, you're a tax resident if you spend 180 days or more here in a calendar year. Since 2024, foreign income earned from 2024 onwards that you bring into Thailand can be taxable. Savings built up before 2024 are treated differently — but only if you can show they're pre-2024 money. That makes record-keeping, and the way you organise your UK accounts, genuinely valuable.

In the UK, you'll usually still pay tax on UK-source income such as rent from a UK property. Some pensions remain taxable in the UK. You'll need to tell HMRC you've left, and you may be able to claim relief under the double tax agreement so the same income isn't taxed twice.

A few simple habits make a big difference: keep pre-2024 savings in a separate account from new income; keep records of what each transfer to Thailand is made of; and take advice before moving large sums once you're Thai tax resident. Our guide to receiving overseas income in Thailand explains the rules in more detail.

6b. Inheritance: the UK may follow you

Since 6 April 2025, UK inheritance tax has been based on residence. If you've been UK resident for at least 10 of the previous 20 tax years, you're a "long-term resident", and your worldwide estate is within UK inheritance tax — including your Thai condo and Thai bank accounts. Leaving the UK doesn't end that straight away. You stay in scope for a "tail" of between three and ten years after you leave, depending on how long you were resident.

From 6 April 2027, most unused pension funds and pension death benefits will also count towards your estate for inheritance tax. Anything left to a spouse or civil partner remains exempt, and the nil-rate band of £325,000 (plus up to £175,000 more for a home left to children or grandchildren, tapered away for estates over £2 million) still applies. Above those, the main rate is 40%.

Thailand has its own inheritance tax, but it only applies to the part of an inheritance above ฿100 million, at 10% (5% for parents, children and grandchildren), with spouses exempt. For most British expats it won't bite, but it can for larger estates.

Just as important as tax is making sure your estate can actually be dealt with. A Thai will for Thai assets and a UK will for UK assets, drafted so they don't cancel each other out, can save your family months of delay and expense. Make sure someone knows where your accounts are and how to reach them.

How long UK inheritance tax follows you

If you were UK resident for at least 10 of the last 20 tax years, your worldwide estate stays within UK inheritance tax for a period after you leave. The longer you lived in the UK, the longer it follows you:

Years UK resident out of the last 20 tax years, and how many years your worldwide assets stay in scope after you leave. UK residence-based inheritance tax from 6 April 2025, as summarised by HaysMac — confirm your own position with an adviser.

A worked example: Mark and Sue

Mark and Sue are both 63. They've sold their house in Kent for £320,000, have two workplace pensions, and will each claim their State Pension at 66. They plan to rent in Hua Hin for a year, then buy a condo.

Cashflow. They budget ฿95,000 a month — about £2,140 at ฿44.38. Until their State Pensions start, they'll draw from Mark's pension and their savings. They stress-test the budget at a 10% weaker pound and find they need about £2,380 a month in that case, so they keep a bigger baht buffer.

Emergency money. ฿400,000 in a Thai savings account, separate from Sue's ฿800,000 visa deposit, and £10,000 in a UK account for flights and family.

Protection. International health cover for both, bought now while they're healthy, and a review of whether they still need life cover now the mortgage is gone.

Pensions. They take a planned amount tax-free from one pension before they become Thai tax resident, and plan the order of withdrawals around Thai and UK tax. They note that their State Pensions will be frozen.

Investing. £150,000 of the house money goes into a diversified portfolio for the long term, partly in pounds and partly in other currencies, on a platform that accepts Thai residents. £100,000 is earmarked for the condo, with the rate fixed through a forward when they agree a price.

Tax and estate. They keep their pre-2024 savings in a separate UK account, get new wills in both countries, and note that UK inheritance tax will follow them for several years after leaving.

The result isn't complicated. It's simply deliberate — and it means a bad month for the pound, a hospital visit or a change in tax rules doesn't throw their retirement off course.

Keeping your plan up to date

A financial plan isn't a document you write once — and if you haven't written one yet, our step-by-step guide to building an international financial plan shows you how. Exchange rates move, tax rules change, health changes, and families grow. Set a date each year — many people use their visa extension as a reminder — to go through it again.

• Is the budget still right in baht, and is the pound income still covering it?
• Is the emergency fund topped up in both currencies?
• Is health cover still adequate, and has the premium jumped?
• Are pension withdrawals on track and tax-efficient?
• Do investments still match your timescale and risk?
• Have tax rules changed in Thailand or the UK?
• Are your wills and beneficiary details up to date?
• Does someone you trust know where everything is?

Choosing someone to help

Many expats manage perfectly well on their own. Others want someone to check their thinking or handle the parts that cross borders. If you do look for help, the questions to ask are straightforward, and a good adviser will be happy to answer them all.

• How are you paid — fees, commission, or both — and how much in pounds?
• What will I pay each year, in total, for everything you recommend?
• Can I get my money out, and what does it cost if I do it early?
• Do you understand both UK and Thai rules for my situation?
• Where is my money held, and in whose name?
• Can I see it all in writing before I commit?

Be very wary of anyone who contacts you out of the blue, promises guaranteed returns, pressures you to decide quickly or can't explain clearly what you're buying. Lawrence's free review is designed to be the opposite: an unhurried conversation, a clear picture, and no obligation.

The mistakes we see most often

1. Budgeting at a good exchange rate and assuming it will last.
2. Using the visa deposit as an emergency fund and falling below the required level.
3. Leaving health insurance too late, when premiums are high and exclusions many.
4. Forgetting the State Pension is frozen in Thailand.
5. Mixing pre-2024 savings with new income, making the Thai tax position harder to prove.
6. Assuming UK inheritance tax stops the day you leave.
7. Buying products you don't understand from someone who approached you.
8. Having one will that doesn't deal with assets in the other country.

Keeping your finances secure from abroad

Managing money across two countries means a lot of logging in from phones, laptops and public Wi-Fi. A few habits keep it safe:

• Use a password manager and a different strong password for every account.
• Turn on two-factor sign-in everywhere it's offered.
• Use a private, protected connection on hotel, café and condo Wi-Fi.
• Never act on unexpected calls or emails about your pension or investments.

How we researched this guide

We used GOV.UK's guidance on the State Pension abroad; Thai Visa Services' guide to retirement extension financial requirements (updated 27 September 2026); our own guide to receiving overseas income in Thailand, which draws on Forvis Mazars and ThaiLawOnline; HaysMac's summary of the UK's residence-based inheritance tax from April 2025; AJ Bell's summary of the inclusion of pensions in inheritance tax from April 2027; and Forvis Mazars' summary of Thailand's Inheritance Tax Act. Worked examples use ฿44.38 = £1 (Wise, 12 October 2026) and are illustrations. Checked 13 October 2026. This guide is general information, not personal financial, tax or legal advice — rules change and individual circumstances differ.