Luxembourg vs. the Border: Where Should You Buy Your Family Home?

I am thinking particularly of couples and families who have spent the last 15, 20 or 30 years working, saving and investing.

Some both work in Luxembourg. Others have one partner working in the Grand Duchy while the other works in Belgium, France or Germany.

Their common denominator is not necessarily where they work. It is the fact that they have gradually built financial assets through their professional income, financial discipline and long-term investments.

We are not necessarily talking about wealthy individuals or millionaires.

We are talking about households that have managed to accumulate a few hundred thousand euros over the years.People who have already paid substantial taxes on their earnings, carefully managed their expenses and invested what they could afford to save.

Their objective is relatively simple: continue growing their capital, prepare for retirement, achieve greater financial independence and eventually leave something to their children. For these families, the choice of where to live can have consequences that go far beyond the property market.

It is no longer simply about where their salaries can provide the most comfortable lifestyle. It is also about which country offers the environment they want for protecting the results of decades of work.

When looking at Luxembourg's neighbouring countries, some developments deserve attention.

France and Belgium face significant public debt, persistent budgetary pressures and considerable long-term financing challenges.

Ageing populations, pension systems, healthcare, education and public infrastructure will all require substantial resources over the coming decades.

Germany is in a different fiscal position, but it too faces demographic pressures and major investment needs.

Governments will inevitably have to make choices.

Reduce expenditure? Increase tax revenues? Reform social security systems?

Most likely, a combination of different measures.

But one thing seems increasingly difficult to ignore: the taxation of private wealth, financial investments and capital gains is likely to remain an important political debate.

Belgium has already moved towards broader taxation of financial investments, while France regularly debates additional contributions from higher levels of wealth.

Personally, I find it difficult to imagine these discussions disappearing over the next two or three decades.

And this creates a legitimate concern for families who have accumulated wealth through income that has already been heavily taxed.

After paying income tax, saving for years and taking investment risks, how much of their future investment returns will they ultimately be able to retain?

Of course, nobody can predict future tax legislation with certainty.

It would be wrong to assume that every neighbouring country will continuously increase every tax.

Nevertheless, fiscal uncertainty itself has become a factor worth considering in long-term wealth planning.

Luxembourg offers a rather different environment.

Its public finances remain relatively solid, its government debt is considerably lower than that of several neighbouring countries, and its economic model has long emphasised international competitiveness and financial attractiveness.

More importantly, its approach to private wealth taxation remains particularly favourable.

There is no general annual net wealth tax on individuals.

Certain long-term capital gains on private financial investments can be exempt from taxation, subject to the applicable conditions.

And inheritance in the direct family line benefits from particularly favourable treatment, including an exemption for the statutory share.

The current government has also explicitly committed not to introduce a personal wealth tax or inheritance tax on direct-line statutory succession during its term.

Naturally, none of this guarantees that Luxembourg's tax system will remain unchanged for the next 30 years.

The country will also need to adapt to demographic pressures, infrastructure requirements and evolving public expenditure.

But I personally believe that fiscal stability and the attractiveness of private wealth are important elements of Luxembourg's economic positioning.

And significantly weakening those advantages would come with economic consequences.

When you are planning your family's financial future over several decades, that difference matters.

And this is where the dilemma becomes particularly interesting.

Luxembourg may offer an attractive fiscal and economic environment, but accessing it as a homeowner can require an enormous financial commitment.

Imagine a couple working and living across the Luxembourg border. Over the years, they have accumulated a substantial investment portfolio and built a comfortable lifestyle.They own, or could purchase, a spacious family home in Belgium, France or Germany at a relatively reasonable price.Their mortgage payments remain manageable, allowing them to continue investing a meaningful portion of their income.

Now imagine the same family deciding to move to Luxembourg. A suitable family home might cost €1 million or more.

They may need to allocate €200,000 or €300,000 of their savings towards the down payment and transaction costs, while taking on a considerably larger mortgage.

Their monthly repayments could increase significantly. And that means less money available for financial investments. Over 20 or 30 years, this opportunity cost can become substantial. For illustration, €250,000 invested over 25 years at a hypothetical average annual return of 6% would grow to approximately €1.07 million, before taxes and inflation.

Of course, this is not a complete financial comparison. The Luxembourg property would also have value, the mortgage would gradually be repaid, and future property appreciation, financing costs and tax differences would all need to be considered.

Investment returns are not guaranteed either. But the paradox remains fascinating.

To benefit from an environment that may be more favourable to building and protecting financial wealth, you may first need to lock a significant portion of that wealth into an expensive property.

That is not an easy decision.

This is another aspect that I believe deserves far more attention when comparing Luxembourg with neighbouring countries.

What kind of education do we want our children to receive, and what opportunities will they have in 10 or 20 years?

Luxembourg allocates considerable resources to its education system.

According to OECD data, public expenditure per student is among the highest across OECD countries. The country continues investing in educational infrastructure, has developed a diverse range of educational pathways and offers an exceptionally international environment. Children growing up in Luxembourg have the opportunity to experience several languages and cultures from a very young age.

Luxembourgish, French, German and English are all part of the wider linguistic environment. For families thinking about their children's future in an increasingly international labour market, this can represent a significant advantage.

Of course, Luxembourg's education system is not without challenges.

Multilingual education can create difficulties for some students, and higher spending does not automatically translate into better academic results. Nevertheless, I see Luxembourg's financial capacity to continue investing in education as an important consideration. Especially when neighbouring countries are facing increasingly difficult budgetary choices.

For parents, the quality of schools, available resources, language opportunities and long-term economic prospects can matter just as much as the size of the family home.

Is having a bigger house today necessarily a better investment in your children's future than living in an educational and economic environment you believe offers stronger long-term opportunities?

I think that question deserves serious consideration.

A family does not live inside an ETF portfolio

It would be a mistake to reduce this discussion to financial optimisation alone. Families need homes, space, stability and a comfortable environment in which to raise their children. For the price of a relatively ordinary family house in Luxembourg, you can often purchase a considerably larger property in neighbouring regions.

A larger garden, more living space, a quieter environment and lower mortgage payments all have genuine value. And that quality of life should not be dismissed. On the other hand, moving to Luxembourg can considerably reduce commuting time. For some people, that means recovering several hours every week.

Hours that can be spent with their children, pursuing hobbies or simply enjoying family life. That also has value, even if it is much harder to express in euros. Then there is the age of the children. Moving a four-year-old into a different educational and linguistic environment is not the same as relocating a teenager who is already well integrated into their school and social life.

At a certain point, some decisions become increasingly difficult to reverse. Even when the financial reasoning remains attractive. And ultimately, these family considerations may matter more than any spreadsheet.

I do not believe there is a universal answer.

It depends on the wealth already accumulated, household income, children's ages, existing mortgage commitments, investment horizon and personal priorities. For some families, remaining across the border will allow them to enjoy an excellent quality of life while continuing to invest significant amounts every month.

For others, the additional cost of Luxembourg property may be justified by shorter commutes, educational opportunities, economic stability and the long-term tax environment. And we should remember that a larger investment portfolio in a country with higher taxation may still outperform a smaller portfolio in a more favourable tax jurisdiction.

Luxembourg offers genuine advantages, but those advantages do not automatically justify paying any price for a house.

Equally, buying a cheaper house across the border is not necessarily the better financial or family decision over several decades. The calculation is much more complex than comparing property prices.

Ultimately, we are not just choosing where to live. We are choosing the environment in which to build our family's future.

That is what makes this decision so difficult.

Choosing between Luxembourg and its neighbouring regions is about much more than the price per square metre. It is about our relationship with work, savings, investments, taxation, education and the future we want to create for our children.

On one side, potentially greater comfort today, more financial flexibility and a stronger capacity to invest. On the other, a fiscal and economic environment that some families may consider more predictable, substantial public investment in education and the opportunity to live closer to work.

Neither approach is inherently right or wrong. But for families who have spent years building their wealth through their own work, this may be one of the most consequential financial and family decisions they will ever make.

And surprisingly, I feel we do not discuss it nearly enough.