Part 1 - Belgium's liquidity paradox part 1: Why €300 billion still sits in cash

Belgium has no shortage of wealth. It has a problem putting that wealth to work. More than €300 billion continues to sit in savings accounts, despite inflation, changing interest rates, and an increasingly sophisticated investment landscape. Why is Belgian cash so stubbornly sticky and what will finally make it move?

In Part 1 of our five-part series on the future of Belgian wealth management, we explore why the real challenge isn't a lack of investment products, but the behaviour and banking models that keep cash the default.

This article opens a series on how Belgian wealth management is about to be forced to change.

Belgium is a nation of savers, and the numbers prove it. National Bank of Belgium data has repeatedly shown household savings account balances topping €300 billion, a scale of idle liquidity that stands out even by European standards. It held above that mark through 2021, through 2022, and again at the end of 2023, largely unmoved by the higher interest rate environment of the past few years.

That resilience is the real story. Even when inflation quietly erodes the value of money sitting in a savings account, most Belgian households still choose the certainty of a stable number on a statement over the higher expected return and higher uncertainty of an investment. The preference for capital protection over return, the trust placed in domestic banks, the comfort of a regulated savings account: these aren't accidents of the current environment. They're a savings culture built up over decades, and it isn't going away on its own.

The conversion gap

The frustration, for banks, is that this isn't a distribution problem. KBC, BNP Paribas Fortis, and Belfius all have wide product shelves and extensive branch and advisory networks. What's missing is conversion, the mechanism that turns a deposit sitting in an account into a deliberate investment decision.

A few frictions explain the gap. Investment conversations are still mostly reactive, triggered by a client asking rather than a bank prompting. Clients tend to experience investing as complex and risky, while cash feels safe and simple, even when inflation is quietly doing more damage than a market downturn would. And the psychology is asymmetric: a loss on paper feels immediate and personal, while the slow erosion of purchasing power in a savings account doesn't register as a loss at all. The net effect is a system that is excellent at collecting deposits and considerably less effective at deploying them.

Why this isn't a product problem

It's tempting to read this as a gap that a new fund launch or a better savings-linked investment product could close. It won't. The deeper issue is behavioural architecture: cash is treated as the default, "no decision" state, while investing is treated as an active, risk-laden choice. Until banks reverse that framing, making inaction visible rather than invisible and building guided pathways rather than open-ended product menus, no amount of shelf expansion will move the €300 billion.

That's the design challenge we spend a lot of our time on with clients at NORRIQ: not selling more product, but re-architecting how liquidity moves through a bank's relationship with a client.

What's changing the equation

Here's why this moment matters. Two forces are converging on Belgian wealth management that will make the current equilibrium much harder to sustain. On the client side, a generational wealth transfer is underway that will hand this liquidity to a cohort with entirely different expectations of what a bank should do with it, that's Part 2. On the competitive side, digital investment platforms have already reset what "normal" looks like on cost and control, and private banks are feeling the pressure, that's Part 3.

Together, those two forces are pushing incumbent banks toward a specific operating answer, which we'll unpack in Part 4, and toward a technology that might finally make that answer scalable, which closes out the series in Part 5.

The €300 billion isn't going to move because a bank asks nicely. It's going to move because the banks that get ahead of these shifts redesign the default and the ones that don't will watch the gap widen.