A monthly cost-of-living figure is the wrong tool for a twenty-five-year decision, and almost every page about retiring abroad hands you exactly that. Spend X a month in Chiang Mai; spend Y in Cebu. The number is real and the number is useless — because it is a photograph of the first year of a retirement that has to survive the last one. The variable it omits is time, and time is the only variable that decides whether the money lasts.
This page does not give you a number. It gives you the method to compute your own, because your pension currency, your destination, your pot and your health are not mine. The output of the method is not a budget. It is a single date: the year your margin reaches zero. And the discipline of finding it is what the brochure is built to prevent. What follows is analysis, not financial advice; it is a deterministic illustration meant to make your assumptions explicit, not a forecast. Verify your own figures with a licensed professional.
Why a worksheet, and not a budget
The honest object in retirement-abroad planning is the crossover age: the first year in which your cumulative outflow overtakes your income plus whatever capital remains. Before it, you are solvent. After it, you are the subject of the consular reports and the fundraisers. The whole site exists around one finding, modelled in full in the money doesn’t last: for the modal case (a single retiree, a modest pot, a frozen pension) that crossover arrives in the early-to-mid eighties, which is before life expectancy, not after it.
A monthly budget cannot find that date, because all of the events that produce it happen in later years a snapshot never reaches. So the worksheet replaces the snapshot with a trajectory. Seven steps. Each one corresponds to a piece of sourced data this site has already built, so you are not inventing figures. You are placing your own numbers into a structure and reading off where it fails.
The seven steps
Step 1: Set the horizon. Take your current age and model to about 90. At 65 that is a twenty-five-year run; the figure is not arbitrary, it is where the actuarial tail for a 65-year-old sits. Modelling to 80 is the most common and most expensive error, because the worst drains land in the last decade.
Step 2: Lay down income. List every income stream (state pension, private pension, annuity, drawdown) and against each one mark a single flag: uprated or frozen in your destination. This flag is not cosmetic. A UK State Pension is frozen at the rate first received in countries with no reciprocal agreement, which includes Thailand; it is uprated in the Philippines, the EU and the US. A frozen income line stays flat in nominal terms for twenty-five years while everything it buys rises. Get this flag wrong and every later step is wrong.
Step 3: Size the pot. Convert investable capital into an income line using a sustainable withdrawal rate. Use 4% as your base (the Bengen and Trinity anchor: 4% in year one, inflation-adjusted thereafter) and 3.3% as your adverse floor: Morningstar’s 2021 low-water mark, below even the 3.9% its current (2026) work supports, used as a deliberately conservative stress case rather than a forecast. Add this to the income from step 2. This total is the line the outflow has to stay under.
Step 4: Apply the two inflations, and the currency. Split your spending into two lines, because they grow at different speeds. The lifestyle line (rent, food, transport) grows at general inflation, call it 2%. The health line grows at the medical trend rate, which in Asia-Pacific for 2026 runs roughly 11 to 14% (Aon ~11.3%, Mercer ~12.5%, Willis Towers Watson up to ~14%). That gap is the engine of the whole worksheet: the health line compounds away from everything else, doubling roughly every six years while the lifestyle line crawls. Then apply currency as a band, never a point. If your income and spending currencies differ, run a real drift of 0% base, −2% adverse, +1% benign per year on the pair. If they match, as a dollar pension in a dollar-priced life does, the FX drift is zero.
| Date | THB per GBP | Range | Basis | Note |
|---|---|---|---|---|
| 2007 | 70 | 65–75 | triangulated | pre-2008 sterling peak (GBP ≈ $2.00, USD/THB ≈ 33–36) |
| 2016 | 45 | 40–45 | triangulated | settled into the ~40–45 band after the Brexit vote |
| 2026-05 | 42.98 | 41.69–44.3 | sourced | May spot; 2026 range 41.69 (21 Jan) to 44.30 (4 May). Re-read 24 May ~43.9, within range; value held at the representative mid-May figure. |
Source: Bank of England spot series (via poundsterlinglive GBP-THB history) · latest 42.98 THB per GBP (2026-05) · as of 2026-05-24
The sterling-into-baht pair above is the cautionary case: a frozen pension and a falling currency — the one cell in the matrix with no defence. A dollar pension faces a flatter rate but the same compounding health line. Pick your own pair and set the band.
Step 5: Insert the cliff. International private health cover does not get gradually dearer. It steps. Premiums surcharge hard, exclusions widen, and new applicants are commonly refused from around age 70, with another step at 75 and the prospect of no qualifying cover at all. Model it as a discrete jump in the out-of-pocket health line at your chosen cliff age, not a smooth curve. Where you put the cliff moves the failure year directly.
Step 6: Add the care tail. Choose an onset age (80 is a sober default) and add a care line from that year. The number is brutal because care is labour and labour is the thing that does not get cheap with a favourable exchange rate: a Thai full-time private nurse runs around 37,500 THB a month, a facility 30,000 to over 100,000, Philippine assisted living from about ₱62,000 (~US$1,000). Any one of those can approximate a retiree’s entire base income. This is the line that ends most runs.
Step 7: Find the crossover. Walk the years forward. The first year in which cumulative outflow exceeds income plus remaining pot is your answer: the year the margin reaches zero. That date, not the monthly figure, is the output of the exercise.
The blank worksheet
Fill this in with your own numbers before you fill in anyone’s brochure. Each row maps to a step above and to the sourced page that supplies the realistic range.
| Input | Your figure | Base | Adverse | Where the data lives |
|---|---|---|---|---|
| Start age → horizon | __ → ~90 | 65 → 90 | 65 → 90 | Step 1 |
| Pension(s), uprated or frozen? | __ | frozen if Thailand | frozen | Frozen pension |
| Investable pot × rate | __ × __% | × 4% | × 3.3% | The money doesn’t last |
| Lifestyle inflation | __% | 2% | 2% | Step 4 |
| Medical trend | __% | 11% | 14% | Medical trend |
| FX real drift (if currencies differ) | __% | 0% | −2% | FX decline |
| Insurance cliff age | __ | 70 | 70 | The cliff at 70 |
| Care-tail onset | __ | 80 | 80 | The care tail |
| Crossover year | __ | early-to-mid 80s | mid-to-late 70s | Step 7 |
The visa floor is not in this worksheet, but it sits underneath it. Whatever crossover you compute, your income must also clear the Thai 65,000 THB income gate or the Philippine SRRV pension floor every year until then, or the retirement ends administratively before it ends financially.
The levers, ranked by leverage
The reason most planning fails is that people tune the wrong input. They agonise over whether rent is 12,000 or 15,000 baht and never flag the pension as frozen. So rank the levers by how far they actually move the crossover year.
| Lever | Leverage | Why |
|---|---|---|
| Pension uprating (frozen vs uprated) | Highest set by destination country alone | A frozen line stays flat for 25 years while costs compound; moves the crossover by years |
| Medical trend rate | Very high the engine | Compounds; doubles the health line every ~6 yrs; halving it often saves the plan |
| Care-tail onset & length | High | One care line ≈ the whole base income; an early or long tail ends the run |
| Insurance cliff age | High | A discrete jump in out-of-pocket health; move the cliff age, move the crossover |
| Drawdown rate / pot size | Moderate–high | Higher rate or smaller pot pulls the crossover in, steadily not sharply |
| FX real drift | Situational | Large when income and spend currencies differ; zero when they match |
| General inflation | Low the one people fixate on | Small next to medical trend; tuning it changes little |
Source: Sensitivity directions from the the-money-doesnt-last 25-year model · checked 2026-05-22
Read the top of that table and the bottom together. The two highest-leverage inputs (which country you pick and how fast medical costs compound) are the two the brochures never mention — and the lowest-leverage one, general inflation, is the one they love to reassure you about, because it is the one that does not matter.
The worked example
Run the method on the modal case to see what it produces. A single retiree, age 65, a modest pot drawn at 4%, a frozen UK State Pension, living in Chiang Mai on a sterling income against a baht cost base, medical trend at 11%, the cliff at 70, the care tail from 80. On those base assumptions the margin reaches zero in the early-to-mid eighties. Switch to the adverse column (3.3% draw, 14% medical trend, −2% FX drift) and it fails in the mid-to-late seventies. Only the benign run, with a kinder medical trend and no hard cliff, survives into the early nineties.
Two of those three scenarios end before life expectancy. That is the finding the worksheet exists to surface, and it is not a doomer’s flourish but what the arithmetic returns once you stop pricing the first five years and start pricing all twenty-five.
What the worksheet cannot do, stated plainly
It is deterministic, so it ignores the randomness of investment returns and the sequence in which they arrive. It treats the cliff and the care tail as scenario events with chosen dates rather than as probabilities; the companion stress-test instead prices those shocks as the base case. Its trend rates are themselves moving targets. None of that is hidden, because the openness is the point: a black-box calculator that hands you a single comforting target number is selling certainty that does not exist, and this is the opposite instrument. It makes your assumptions visible so you, or an adviser, can argue with them.
Run it honestly and one of two things happens. Either the crossover lands comfortably past 90 — in which case you are in the minority for whom the move is survivable, and you should go knowing why. Or it lands at 81, and you have learned, at a desk and for free, the thing the relocation industry arranges for you to learn at 81, in a second language, with the scaffolding gone. The worksheet is cheap. The alternative way of getting the same number is not.
This article is analysis, not financial advice. The worksheet is a deterministic illustration built from sourced trend rates and this site’s cited models; it is not a forecast, and it omits investment-return sequence risk and the probabilistic nature of the cliff and care events. Trend rates, exchange rates and visa thresholds change. Verify your own figures and assumptions with a licensed financial professional before acting on them.
Questions
How long will my money last if I retire abroad?
There is no single answer, which is why this page gives you a method instead of a number. The honest figure is not a monthly cost but a crossover age: the year your cumulative outflow overtakes your income plus your remaining capital. Computing it means running a 25-year trajectory that includes the things a monthly budget omits: the compounding medical trend (11–14% a year in Asia-Pacific), the insurance cliff at around 70, the long-term-care tail, and whether your pension is frozen or uprated in your destination. For the modal case (a single retiree on a modest pot with a frozen pension) the crossover arrives in the early-to-mid 80s, before life expectancy.
What is the safe withdrawal rate for retiring abroad?
The classic anchor is the 4% rule (Bengen 1994; the Trinity study): withdraw 4% of the pot in year one, then adjust for inflation, over a 30-year horizon. Morningstar reassessed it down to roughly 3.3% in 2021 on high valuations and sequence-of-returns risk, then walked it back up to 3.9% by 2026 as return expectations recovered. But the rate is only one input, and not the highest-leverage one. For a retirement abroad, the destination's pension-uprating rule and the medical trend rate move the failure year more than a half-point on the withdrawal rate does. Use 4% as a base and 3.3% as a deliberately conservative adverse floor, and spend your attention on the bigger levers.
Why model 25 years instead of a monthly budget?
Because the monthly budget is a photograph of year one, and the failures all happen later. A snapshot cannot show the medical line compounding away from the lifestyle line, the step change when private insurance surcharges or refuses you at 70, or the care tail that can equal your entire base income. Those are the events that end retirements, and none of them appear in a single month. A 65-year-old should model to about 90, because that is where the actuarial tail sits and where the relocation-specific drains land.
Which assumption matters most in a retirement drawdown model?
For a retirement abroad, the destination country's pension-uprating switch is usually the single highest-leverage input: a frozen UK State Pension (Thailand, and many countries) versus an uprated one (the Philippines, the EU, the US) can move the failure year by several years on its own. The medical trend rate is close behind, because it compounds. The care-tail onset and the insurance-cliff age follow. General inflation, the variable people fixate on, has low leverage relative to these. The worksheet ranks them so you tune the ones that change the answer.