How do you know when you have enough to retire?
Almost everything written about retirement is about getting there. Save this much, invest like that, keep going. Very little of it is about the moment you're meant to stop, which is odd, because stopping is the decision that actually costs you something if you get it wrong.
I retired at 53. The hard part wasn't accumulating the money. It was working out that I already had enough.
We're taught to accumulate, not to stop
We spend decades learning how to build the pile and no time at all learning how to tell when it's big enough. There's an entire industry devoted to the first half of that problem and almost nothing serious about the second.
The result is predictable. People who could already afford to stop carry on working, sometimes for years, because nobody ever described what enough looks like from the inside.
It doesn't announce itself either. There's no letter, no threshold, no moment where someone confirms you're done.
So if you're waiting for certainty, you'll wait a very long time, because certainty was never on offer. What is on offer is a projection you can actually inspect and argue with, which is a different thing and a more useful one.
I've written elsewhere about why I built this and what my own decision looked like. This page is about the part that generalises: how you tell, in your own figures, whether you're there.
"How much do I need?" is the wrong question on its own
It's the most asked question in personal finance and it's very nearly unanswerable as put. A number means nothing without three others attached: when you intend to stop, what you intend to spend, and how long you're planning for. Move any one of them and the answer shifts by a sum most people would consider a fortune.
That's why rules of thumb are so appealing. Twenty-five times your annual spending can be a useful rough cut, but it can't see when your pension begins, whether you plan to sell a property or how your spending changes with age. Almost nobody has a flat income and spending pattern for the rest of their life.
I've written separately about why the 4% rule fails hardest for the people leaning on it most.
The better question runs the other way round.
Not "How much do I need?", but "Given everything I already have, at what age does this hold?"
That question has a real answer, and it comes back as an age rather than a number.
What a "yes" actually looks like
The calculator can only answer the question as well as you have asked it. Before a projection is worth anything, there are six things you need to be able to say honestly.
None of them require a spreadsheet. Most people can get through the list in an evening, and it's usually the evening that changes the answer, not the software.
1. You know what you actually spend
Almost everyone's estimate of their own annual spending is really a memory of their fixed costs. Take a full year of bank and card statements and add the things that only happen once a year: insurance, repairs, travel, gifts, the dentist, the car that will eventually need replacing.
The total is usually higher than the one you'd have said out loud.
Every other figure in your plan is measured against this one. It deserves more attention than the return you assume on your investments.
2. You have a view on how that spending changes
Spending isn't a flat line for thirty years. Most people spend more in the first stretch, while they're fit enough to use the freedom, and less later.
ETQ assumes that by default: it lifts your spending slightly through the active years, then steps it down in two stages as you get older. You can disagree with that and hold it flat.
What matters is that you chose. Holding spending flat is also an assumption, and a quietly pessimistic one about the years you most want to enjoy.
3. Your income is mapped to the years it actually arrives
This is where rules of thumb fall apart. Pensions begin on fixed dates. Rental income stops the moment you sell the property. A consultancy income might run for five years and then end.
Averaging all of that into a single annual figure conceals the only thing that matters, which is whether each individual year stands up on its own.
In particular, the years between the day you stop working and the day your pensions begin have to fund themselves out of what you already hold.
4. You have a deliberate cash reserve
Not a general sense that you keep some money back, an actual figure. Its job is to stop an ordinary bad year from forcing you to sell something at the worst possible moment.
How many months it represents matters less than the fact that you set it deliberately, and that your plan never has to reach into it.
5. The plan survives being wrong
Every projection rests on assumptions about returns and inflation, and neither will behave year by year the way you assumed. The useful question isn't whether your assumptions are correct. It's how much has to change before your answer changes.
Take a percentage point off the return, put one on inflation, and run it again. A retirement age that holds up under that is worth something.
One that exists only at the most optimistic figure you could justify is a hope with a date attached.
6. You have decided what should be left at the end
Some people intend to leave a house to their children. Others are content to finish with very little and would rather have the years. Both are perfectly reasonable.
Leaving it undecided isn't, because the difference between those two answers is measured in years of your working life.
Once those six answers are settled, what remains really is arithmetic. The plan has to pass two tests:
- Does your cash stay above your reserve in every single year?
- Is there enough left at the end to meet whatever you said you wanted to leave?
Note the words "every single year". A plan that survives on average isn't the same as a plan that survives, and averages are very good at hiding the year it fails.
The methodology page sets out precisely how both tests are applied.
Plan for an age you probably won't reach
One item on that list deserves pulling out, because it's the assumption people get most wrong and the cheapest one to correct.
If you plan only to your life expectancy, you're treating an average as an expiry date. Some people will die before it and many will live beyond it, sometimes by a long way. If you're healthy and financially comfortable, a population average may not describe your own chances particularly well anyway.
I built my own plan out to 95. ETQ starts at 90 and lets you move it, and I'd suggest moving it up rather than down, because the cost of the error isn't symmetrical.
Plan to 95 and die at 82, and you left more behind than you intended. Plan to 82 and live to 95, and you spend your last thirteen years dependent on somebody else. Only one of those is recoverable.
A few extra years can change a lot
If your first run comes back as no, don't be disheartened by the size of the gap. The years immediately before you stop are often far more powerful than the ones that came before them, for two reasons that compound.
The first is that a year worked late in a career is often among your highest-earning, and the money lands on a pot that's already substantial.
The second gets noticed less and may matter more. Every extra year you work is also one fewer year the pot has to support. It adds at one end and removes a claim at the other.
That's why a plan that fails at 55 may hold comfortably at 58, and why the distance between "not yet" and "yes" is often shorter than it looks from the wrong side of it.
It's also the argument for using those years deliberately. Building skills that lift your income may do more in your final decade than in your first, because it's applied to a bigger base and it shortens the run you still have to fund.
Which lever matters most is different for everybody, and it isn't obvious from the outside. Seeing the whole projection is what tells you whether your income, your spending or the retirement age itself is the one worth pulling in your case.
The extra year isn't free
All of that cuts the other way too, and this is the part I'd most want someone to take away.
The reason to know when you have enough isn't so you can stop the instant you hit it. It's so that every year you work after that point is a year you chose.
There's a well-worn pattern where people who can already afford to stop keep going regardless, because one more year always feels prudent and nothing ever tells them to get off. Each of those years buys a little more financial certainty at a price that never appears on the invoice.
One more year always feels prudent. That's exactly what makes it expensive.
The price is health, and it's charged in your best years first. Money you didn't earn can, within reason, be earned later or done without.
A decade of being fit enough to walk up a mountain cannot be bought back at any price. That asymmetry appears in no financial projection, which is precisely why it needs saying alongside one.
So look after the health as deliberately as the portfolio. The freedom is only worth what you're well enough to do with it.
How I checked mine
In the year before I stopped, I built a spreadsheet with one row per year for the rest of my life, out to 95. Income, pensions, property, spending, cash and net worth: the whole shape of the years I had left, laid out where I could look at it rather than reduced to a multiple or a rule.
That model became the engine behind this site. The calculator here is the version I'd have wanted at the beginning.
Entering your figures takes about half an hour. It runs entirely in your browser and nothing you type is sent anywhere.
What it returns is the earliest age at which your cash holds in every year and your plan still leaves what you asked it to leave. If no age works, it says so plainly rather than rounding the answer in your favour.
Frequently asked
How do you know when you have enough to retire?
When you know what you actually spend, you've decided how that spending changes with age, your income is mapped to the years it arrives rather than averaged, you hold a deliberate cash reserve, your plan still works when your assumptions are wrong, and you've decided what to leave behind. After that it's arithmetic: does your cash stay above your reserve every year, and is enough left at the end.
What is one more year syndrome?
It's the pattern where someone who can already afford to stop keeps working anyway, because another year always feels prudent and nothing ever signals that they're done. Each year buys a little more financial certainty at a cost charged in health, and in your best years first.
How long should you plan your retirement for?
Longer than your life expectancy. It's an average, not an expiry date, and many people live beyond it. The error isn't symmetrical: plan long and die early, and you leave more than you meant to; plan short and live long, and you risk spending your final years dependent on somebody else.
Further reading: how much do you really need to retire early?, retiring at 55 and at 60, how to use the ETQ Full Calculator, and the best money and early-retirement books, blogs and tools.
Educational information only, not financial advice. Pension and benefit ages and amounts vary by country and change over time; check what applies to you. ETQ produces illustrative model output sensitive to your inputs and the tool's default assumptions. Speak to a qualified professional before acting on a projection.