How much you need to invest for your pension, in short

Add up all three official Belgian pension pillars for an employee who used them well and you land around €2,430 net a month. Want €4,000 a month instead, and the gap is roughly €1,600 a month. Closing a €1,600 monthly gap safely takes about €700,000 of invested capital. The 4% rule, which says you can withdraw 4% of your starting capital a year and expect the money to last thirty years, puts it at €480,000. Thirty years is not long enough for a 66-year-old Belgian, so we work with 2.75% a year instead. Building €700,000 by age 66 costs around €250 a month if you start at 25, and around €1,230 a month if you start at 45. Every figure in this paragraph is worked out below, with its assumptions attached.

Start with what you want to spend, not with what you earn

Your pension target is an expenses number, not an income number. Most people start from their salary: "I earn €3,500 net today, so I will need about €3,500 later." That works as a rough sanity check, and it is the wrong place to begin, because your spending in retirement is not your spending now.

Some costs disappear at 66, and others arrive

Retirement removes commuting, pension contributions and, for many people, a mortgage and children living at home. It adds the cost of free time. Travel, hobbies, days out, care at home and eventually a residential care home all cost money, and you have more hours to fill. There is no rule that says you will need much less than you spent while working.

The closer you are to retiring, the better your estimate gets. At 63 you usually know what your life looks like. At 35 you are guessing, so pick a number, write down the assumption, and revisit it.

Where a Belgian household's money actually goes

Housing is the biggest line in a Belgian household budget by a wide margin, and it is also the line most likely to change when you stop working. Statbel's Household Budget Survey for 2024 puts housing, water, electricity, gas and other fuels at 30.6% of what a Belgian household spends. Food and non-alcoholic drinks come next at 14.0%, then transport at 11.7%, recreation and culture at 7.9%, and hotels, cafés and restaurants at 7.3%.

Use that as a checklist rather than a target. If your mortgage is paid off by 66, the largest chunk of your budget shrinks a lot. If you will still be renting, it does not, and your number has to be higher. Transport falls when the commute goes. Recreation and restaurants, just over 15% of the budget between them, are the two lines most likely to rise once you have the time to use them.

Your target is in tomorrow's euros, not today's

The impact of inflation makes every distant target bigger than it looks. If you are 50 today and think you will need €4,000 a month, you will need about €5,500 a month at 66 to buy the same things, at 2% inflation a year. That is not a rounding error, and it gets worse the younger you are. By our own arithmetic on the same 2%, the same €4,000 a month becomes about €9,000 a month for someone who is 25 today.

This matters for one specific reason. The €700,000 target in this article comes from a gap measured in today's euros, while the monthly contributions that build it are counted in the euros of each future year. If your retirement is forty years away, both sides of that sum need inflating, so treat €700,000 as the answer for someone close to retirement and as a floor for someone starting out.

What the Belgian state pension will actually give you

The Belgian state pension is a monthly income rather than a pot you own, and what you get depends on your employment status, your career length and what you earned during it. Today's pensions are paid out of the contributions and taxes of today's workers. Civil servants, employees and the self-employed build it up in different ways, so the amounts differ a lot.

There are four pillars, and you decide only one of them

Belgium builds a pension out of four layers.

1. The state pension, the first pillar, paid by the government.
2. The occupational pension, the second pillar, built through your employer as a group insurance or a pension fund. For the self-employed, this is the VAPZ and the IPT.
3. Pension saving with a tax break, the third pillar, which you arrange yourself at a bank or insurer.
4. Everything you build on top of that, the fourth pillar. Your own investment portfolio lives here.

Only the fourth pillar is fully yours to decide. You can raise the first by earning more, the second is largely set by your employer, and the third is capped by law. The size of the fourth is a choice you make every month, which is why the calculation in this article ends there. For a fuller walk through the first pillar's arithmetic, we wrote a separate guide to what your Belgian pension will be.

mypension.be stopped showing most people their estimate in June 2026

Since 8 June 2026, mypension.be no longer shows an estimate of your earliest pension date or your pension amount to most Belgians. The Federal Pension Service explained why in its press release of 29 May 2026, after the pension reform passed federal parliament. The new rules start on 1 January 2027, and the existing estimates were calculated on the old ones.

The dividing line is your pension date, not your age. If you can retire on 1 January 2027 at the latest, your date and amount are still calculated under the old rules, so you still see your estimate. If you can only retire after 1 January 2027, your pension will be calculated under the new rules and your estimate disappeared on 8 June 2026.

The Federal Pension Service published a timetable for putting it back. The earliest pension date under the new law returns in autumn 2026, the earliest date without a malus at the end of 2026, your actual pension amounts in the second half of 2027, and simulations at the end of 2027.

This is worth knowing before you follow anyone's advice to "just look it up on mypension.be". For most people, right now, the number is not there.

Two things stand in for it in the meantime. The first is the average, which depends on the status you worked under. On the pensioner figures from Pensionstat.be, the federal pension statistics portal, the average state pension in 2026 came to:

A civil servant's average net pension is more than double a self-employed person's. An employee's average is €1,565 net a month, which is the state pension the calculation in this article runs on. The other is our Belgian pension calculator, which gives you an estimate of your own state pension from your age, the age you started working, and your starting and final salaries.

Should you still count on a state pension

Yes, and you should be conservative about the amount. The first pillar is under pressure because Belgium is ageing: the baby boomers are retiring en masse, people live longer, and fewer young workers arrive behind them, so the number of workers per pensioner keeps falling. Pensions take a growing share of the federal budget, every government tries to reform them, and future ones probably will too. That pressure is what people mean by the Belgian pension crisis.

That does not mean the state pension disappears. It is far too important politically and socially for that. It does mean that if you are young today, the amount, the retirement age and the conditions can all still change, so plan with a number you would be comfortable being wrong about.

There is a real reassurance in there as well. Belgian state pensions are indexed, so they broadly follow inflation, which protects your purchasing power far better than a fixed amount that never moves. Indexation does not make you richer, though. It slows down how fast you get poorer. Shares and property tend to grow faster than pension indexation over decades, so someone who invests grows along with that, and someone who does not stays dependent on what the government can afford to pay later.

Freelancers and the self-employed carry more of this themselves

The average legal pension of a self-employed person in Belgium is lower than that of an employee or a civil servant, which makes the fourth pillar more important, not less. Some business owners can sell their company at the end, and plenty cannot: a consultant, a doctor, a journalist or a freelancer often has no business worth much without them in it. Tax breaks are worth having, and they are not a reason to accept an expensive product. If you are self-employed, the rule is not to rely on one pillar. We wrote a fuller piece on how Belgian freelancers can retire on their own terms.

Your second pillar is smaller than the average suggests

The average Belgian company pension is five times the median, so the average describes almost nobody. The FSMA's April 2025 report on supplementary pensions for employees puts the average acquired reserve in a company pension plan at €28,748 on 1 January 2024, and the median at €5,660. A small group of senior profiles and company directors pulls the average up. Half of all affiliates sit below €5,660.

The average hides the median, and the gap is enormous

Every level of detail in the FSMA's figures shows the same gap between the average and the median.

A woman approaching retirement in a Belgian company pension plan has a median reserve of €10,742. Her male equivalent has €26,524. The average capital actually paid out at retirement during 2024 was €47,346, across 73,779 payouts.

Sector-wide plans are smaller again: an average reserve of €2,437 and a median of €854. Around 2.57 million employees are in a sector plan and 2.33 million in a company plan, and plenty of people are in both, so no single figure describes what one person will receive. The safe conclusion is the direction rather than the amount. For most Belgians the second pillar is a one-off extra pot, not a second monthly income, so an employer pension plan rarely removes the need to build a fourth pillar.

A median reserve is easier to judge as a monthly amount. Spread over the eighteen years an average 66-year-old still has, the €5,660 median across all affiliates comes to about €26 a month. The median for a woman aged 55 to 64 works out at about €50 a month, and for a man at about €123. That is our own arithmetic, and it is the whole reason the second pillar does not replace a salary.

Pension saving comes with a tax break and an 8% bill at 60

The third pillar is pension saving, or pensioensparen, which you open yourself at a bank or insurer. Calling it saving is misleading, because a pension saving plan invests your money and carries the risks that come with investing.

Four numbers describe the whole scheme in 2026:

• €1,350 is the most you can contribute in a year.
• 25% or 30% of your contribution comes back as a tax reduction, depending on which of two brackets you fall into.
• €337.50 is what comes back if you contribute the €1,350 maximum.
• 8% of your pot goes to the government on your 60th birthday, as an end tax.

That tax break is the whole sales pitch, and banks and insurers put it in the window.

The part that gets less airtime is that last one. The end tax hands part of the earlier tax break back to the government. That does not make pension saving bad. It does mean the real question is not what you get back each year but what you keep at the end. ETFs versus Belgian pension saving answers that question directly. We cover the scheme in our guide to Belgian pension saving and the levies in how Belgian pension savings are taxed. Our pension saving simulator runs the numbers on real Belgian funds if you want to see what your own plan is likely to produce.

Add the pillars up, and the gap is what you have to invest for

The number you actually need is the gap between what you want to spend and what arrives automatically. You only see it once you add all three official pillars together, which is the step most Belgian pension pages skip.

Jan's three pillars come to €2,430 net a month

Jan's three official pillars come to about €2,430 net a month. He is an employee and retires at 66, and each of his three numbers comes from somewhere:

1. A net state pension of about €1,500 a month. That is the 2026 average for an employee, €1,565 net, rounded down.
2. An occupational pension of €71,000. Close to the FSMA average for a 55 to 64-year-old in a company plan, and about four times the median, so Jan is doing better here than most people.
3. A pension saving pot of €130,000. He contributed €1,050 a year from the age of 25, which adds up to about €43,000. The pot therefore assumes his pension saving fund roughly tripled that money, which takes just under 5% a year after the fund's own costs.

The second and third pillars are pots rather than monthly incomes, so they have to be spread out. Together they come to €201,000. Jan's life expectancy at 66 is another eighteen years, and €201,000 across those 216 months is about €930 a month. Added to his state pension of €1,500, Jan lands on about €2,430 net a month.

Every one of those numbers is a good case rather than a typical one. The €930 also spreads his two pots over an average lifespan: if Jan reaches 96, the same €201,000 gives him about €560 a month instead. Even so, €2,430 is a lot less than what most people are used to at the end of a career, when their salary is at its highest.

The gap is €1,600 a month, and that is the number to invest for

Jan's gap is about €1,600 a month, and that is the figure the rest of this article works with. He wants €4,000 a month in retirement, his three pillars deliver about €2,430, and the difference has to come out of his own portfolio.

Selling a slice of your portfolio every month sounds simple. It introduces a risk that does not exist while you are still contributing: sequence risk. What matters then is not only your average return but the order in which the returns arrive. A crash at 35 is annoying, and you keep working and keep buying. A crash at 67, just as you start selling to live on, does lasting damage, because the euros you sell at low prices are gone and cannot join the recovery. In the worst case the portfolio runs out while you are still alive.

How much capital closes a €1,600 monthly gap

Closing a €1,600 monthly gap safely takes about €700,000, not the €480,000 that the 4% rule gives you. A €1,600 monthly top-up is €19,200 a year. At 4% that implies €480,000 of starting capital. At €700,000, the same €19,200 is a withdrawal rate of about 2.75%, and it survives historical scenarios that €480,000 does not.

The 4% rule is a starting point, not an answer

The 4% rule was built for a different investor, so it belongs in your plan as a starting point rather than an answer. It comes from American research in the 1990s, a paper by Philip Cooley, Carl Hubbard and Daniel Walz in the AAII Journal of February 1998, known as the Trinity study, and its claim is that you can withdraw 4% of your starting capital each year with a high probability that the money lasts at least thirty years.

Simple is not the same as universally valid. The study rests on American historical returns, one specific period, and a thirty-year retirement, while people keep living longer. Belgian investors also face different taxes, different pension pillars, and portfolios that are usually global rather than American. Treat 4% as a rough guideline and it is useful. Treat it as a rule and it is dangerous. Our article on FIRE in Belgium goes further into where the 4% rule holds and where it breaks.

The same portfolio, two retirement dates, two different outcomes

Give Jan €320,000 in a defensive portfolio of 30% shares and 70% bonds, have him withdraw €1,600 a month, and the date he retires decides the outcome. We ran both cases through our Backtest tool on real historical data.

Retiring in March 2008, in the middle of the financial crisis, turns out well. His bonds absorb the first blow, a long bull market follows, the portfolio first climbs to around €370,000, and at his expected age of death about €175,000 is left.

Retiring in October 2000, just before the dotcom crash, does not. Two heavy market periods arrive back to back, the dotcom crisis and then the financial crisis, and the portfolio is empty after 14.5 years. At 80 he falls back entirely on his state pension.

Jan does not get to choose which scenario he lands in, and neither do you. Your pension plan has to work in bad conditions, not just average ones.

Run the 4% rule's €480,000 through the same two scenarios and the unlucky case still empties the portfolio, at 91 instead of 80. That is better and it is not reassuring, because plenty of people live past 91. The biggest financial risk in retirement is not that your portfolio drops for a while. It is that your money runs out while you are still alive.

Plan to live past 90

Life expectancy at 66 is higher than most people assume. Statbel's life tables for 2025 give a 66-year-old man another 18.5 years and a woman another 21.2, so the average lands in the mid to late eighties. The spread around that average is wide: 36% of 66-year-olds reach 90 and around one in ten reach 96, on our own arithmetic from the survivor figures in the same tables. You do not want to plan as though you will reach 84 and then arrive healthy at 97 with no income. Planning for a long life is what pushes the withdrawal rate down from 4% to something closer to 2.75%.

What capital you need for the income you want

Your capital target is your monthly gap times twelve, divided by the withdrawal rate you trust. The table below is our own arithmetic at the cautious 2.75% this article works with.

Two things to keep in mind when you use it. These are amounts in today's euros, so a target forty years out needs inflating. And the lower withdrawal rate buys something specific: the plan still works if you happen to retire in October 2000 rather than March 2008.

How much should sit in cash, and how much has to be invested

Cash covers one to two years of planned withdrawals, and no more than that. Over any longer horizon a Belgian savings account loses to inflation reliably enough that keeping your pension there is the risk, not the safe option.

A buffer of one to two years of withdrawals

The simplest protection against sequence risk is a buffer. Shortly before you retire, move one to two years of planned withdrawals into a savings account, a term account, a short-term bond or a money market instrument. In a bad year on the markets you live off the buffer instead of selling shares at low prices, and you refill it once prices recover.

That is not always mathematically optimal, and it helps enormously in practice. It buys you time, and time is usually the thing you need during a crash. Alongside it, four other habits protect a retirement portfolio: be cautious with your withdrawal rate, stay flexible about the amount you take, cover your essential costs from stable income, and do not turn the whole portfolio defensive too early, so it can still grow.

What a savings account did to €100 since 1996

Take €100 in 1996 and follow it for thirty years. Under the mattress, inflation cuts its purchasing power to €51. On a savings account, interest leaves you with €74, so even with interest you lost close to a third of your purchasing power in thirty years. Invested in a globally diversified portfolio of shares, it grew to €485, more than tripling in purchasing power. Those three figures come from our own Backtest tool, using Belgian inflation and the savings rates Belgian banks actually paid.

Belgian savings rates have lost to inflation for most of the past two decades. Between January 2003 and December 2025, Belgian inflation was higher than the interest rate on Belgian savings deposits in 232 of 276 months, which is 84.1% of the time. Over those 23 years the savings rate averaged 0.83% a year and inflation averaged 2.45%. We calculated that ourselves from two primary series: the National Bank of Belgium's MIR statistics for what Belgian banks actually pay on savings deposits, and Eurostat's harmonised index of consumer prices for Belgium. In June 2026 the savings rate stood at 0.68%. At the peak in October 2022, Belgian inflation hit 13.1% while the savings rate barely moved.

Not investing feels safe. Leaving money on a savings account for twenty or thirty years is also a risk, and it is the risk that your purchasing power quietly evaporates. We compare the two directly in saving versus investing, and if you do want the best available rate for your buffer, we keep a list of the best savings accounts in Belgium.

How much to invest each month to get there

A €700,000 target is reachable on a few hundred euros a month if you start young, because most of the final amount is return rather than contribution. Amounts like €700,000 or €800,000 sound intimidating until you split them into what you put in and what the market adds.

Ezra's glide path, decade by decade

€200 a month at 23, stepped up four times, becomes €889,367 by 66. Ezra is 23, has just graduated and starts her first job, and from 23 to 35 she invests €200 a month in a portfolio of 100% shares.

• At 35 she is married with young children and earning more. She raises her contribution to €500 a month and moves to 80% shares and 20% bonds.
• At 45 she invests €600 a month and shifts to 60% shares and 40% bonds.
• At 55 the children are mostly independent. She can put aside €800 a month, and moves to 40% shares and 60% bonds.

At 66, Ezra has built €889,367. She contributed €266,400 of that herself. The other €622,967 is return. The figures use the average annual return of each of those portfolios over 1994 to 2026, and our guide to building a portfolio of ETFs covers how those mixes are put together.

Two things that path does not show. Real life never runs in a smooth line: there will be crashes, bad years and events nobody planned for, so the end point can land in the same range while the ride feels far messier. And these are nominal amounts, not purchasing power.

What €889,367 at 66 is worth in today's money

About €380,000. That is our own calculation: €889,367 discounted at 2% inflation a year over the 43 years from 23 to 66 comes to €379,554.

Read that as the honest version of every large pension target you see quoted. It cuts the other way too, because Ezra's salary probably rises with inflation as well, so the €800 a month she puts aside at 55 is easier for her then than €800 sounds now. At a 3% withdrawal rate, €889,367 pays about €2,220 a month in the euros of that year, which is again our arithmetic rather than a figure we are quoting.

What to put aside each month, by the age you start

Reaching €700,000 by 66 costs around €250 a month if you start at 25 and around €3,540 a month if you start at 55. The table below is our own arithmetic, assuming a 7% nominal return a year and monthly contributions.

The jump from €250 to €3,540 is the whole argument for starting early, and it is also the reason the table is not a verdict. It accumulates in nominal euros while the €700,000 target was set in today's euros, so someone starting at 25 should aim higher than €700,000, and someone starting at 55 is closer to the honest version of the number. Our article on how much to invest each month works through the same question from the other direction, starting from your income rather than your target.

If the number is out of reach today, raise it later

Not everyone finds investing at 23, and starting at 45 still leaves more than twenty years before the statutory retirement age. Even starting after 55 builds real capital and still earns compound growth. You will have to work harder for it, by putting aside more each month, lowering your spending, raising your income, or working longer.

Working longer sounds unappealing to some people, and plenty of 66-year-olds do not feel ready to stop completely. The statutory retirement age is an administrative line, not a law of nature, and staying on helps a pension plan three ways at once: you build capital for longer, you live off the portfolio for fewer years, and your state pension can come out higher.

The other route is to raise the amount whenever your income does. Someone who invests €200 a month from 25 and steps up to €300 at 35, €400 at 45 and €500 at 55 ends up with roughly €185,000 more at 65 than someone who never moves off €200, at a 7% average return. That is 75% more money contributed for 37% more wealth, which shows that early euros work harder and later euros still count. Yesterday was the best day to start. Today is the second best.

Why the monthly amount can be smaller than you expect

Compound growth is the reason a few hundred euros a month can turn into hundreds of thousands. Invest €100 at 10% a year and you have €110 after a year. The next year you earn 10% on €110 rather than €100, so you make €11 and land on €121.

The effect looks small at first because our brains think in straight lines. Leave that €100 for forty years, from 25 to 65, and it grows to €4,526. In year 40 alone it earns €411, which is more than four times the original €100 and more than the whole position was worth after fourteen years. The gap between stopping after fifteen years and staying for forty is enormous. No investment delivers a tidy 10% every year, so treat that as an illustration of how compounding behaves rather than a forecast. We explain the mechanism in compound interest, and why regular monthly contributions suit it in periodic investing.

Warren Buffett built more than 99% of his wealth after the age of 50, which is the clearest reminder that the last decades do most of the work.

The return we assume, and where you can check it

The whole calculation rests on one assumption: a globally diversified portfolio of shares returns around 8% a year on average over decades. The specific figure is 8.2% a year since 1994, for the MSCI All Country World Investable Market index, which covers large, mid and small-cap companies across developed and emerging markets. The chart below is that index in our own Backtest tool, so you can check the number rather than take it on trust.

That is an expected return, based on historical data and reasonable assumptions, and never a guarantee. The future can turn out differently from the past, and a pension plan that only works if it does not should be redone with a lower number.

Nominal or real, and why it matters for your target

Nominal return ignores inflation. Real return accounts for it. At 2% inflation, a savings account paying 1% nominal loses about 1% of its purchasing power a year, and an investment returning 7% nominal has a real return of about 5%.

The distinction decides which number belongs in your plan. Our monthly contribution table uses a 7% nominal return, because the contributions and the final amount are both counted in the euros of their own year. If you would rather work entirely in today's euros, subtract inflation from the return and leave your target where it is. What you must not do is mix the two, which is how people end up aiming at a target that looks large and buys less than they think.

How often a world index actually lost money

Buy a world index at a random point between 1970 and today and sell exactly one year later, and you finished at a loss about 26% of the time. Over five-year holding periods, the chance of a loss fell to about 17%. Over twenty-year periods, there was no starting date in the index's entire history that ended in a loss. Even someone who bought at the absolute peak of the dotcom bubble in March 2000, just before a drop of more than 40% and a financial crisis seven years later, was back in the black twenty years on. Those figures come from our Backtest tool.

For a pension that is the reassuring set of odds, because a pension is the longest horizon most people ever invest for. Our article on what return to expect from an ETF covers the historical record in more depth, and our guide to index investing explains why a single broad index does this job.

Is €500,000 enough to retire on in Belgium?

€500,000 pays about €1,146 a month at a 2.75% withdrawal rate, or €1,250 a month at 3%. That is our own calculation, on the withdrawal rates used throughout this article.

Whether it is enough depends on what arrives alongside it. Added to a state pension of around €1,500 net a month, €500,000 gets you to roughly €2,650 to €2,750 a month for life. That is a comfortable retirement for someone with no mortgage and modest spending, and it falls well short of €4,000 a month. If €4,000 is your target, €500,000 is about two thirds of the way there.

The useful way to read €500,000 is as a milestone rather than a finish line. Reaching it by 66 costs around €380 a month from the age of 35, at the same 7% nominal return, so it is well within range of someone who starts in their thirties.

Conclusion

The actionable answer to how much to invest for your pension is a monthly amount, and you get to it by subtraction. Write down what you want to spend, subtract what your state pension, occupational pension and pension saving already give you, and turn the annual gap into capital at a withdrawal rate you would still be comfortable with if you retired in October 2000. For a €1,600 monthly gap that is about €700,000, which is roughly €250 a month from 25 or €1,230 a month from 45.

What makes this worth doing now is that only one of the four pillars is yours to decide. The state pension is indexed, which stops you getting poorer rather than making you richer, and it is under real demographic pressure. Your occupational pension is mostly your employer's decision, and its median sits far below its average. Pension saving is capped at €1,350 a year. The fourth pillar is the only one where the amount is a choice you make, every month.

So pick the monthly amount and start. It does not have to be the right number forever, because raising it whenever your income rises does most of the work, and with Curvo you can set up a monthly investment plan and change the amount whenever you want. Yesterday was the best day to start. Today is the second best.