For decades a Belgian private investor paid no tax on capital gains. In 2026 that changed — and a well-worn insurance structure suddenly looks a great deal more useful.
Belgium has always been a high-tax country with one conspicuous exception. Income was taxed hard — a flat 30% withholding on every dividend and every euro of interest — but the growth in the value of a share portfolio, for a private investor managing personal wealth in the normal way, was not taxed at all. That single exception shaped how a generation of Belgian families invested. In 2026, it ended.
Three federal measures arrived together, and their combined effect is the most significant change to the taxation of private wealth in decades. It is worth being precise about what each one does, because the response to them is not despair — it is structure.
What Actually Changed in 2026
First, a new tax on capital gains on financial assets. From 1 January 2026, gains realised on shares, bonds, funds, ETFs, crypto-assets and certain insurance contracts are taxed at a general rate of 10%, above an annual exemption of 10,000 euros. Only growth accruing after a 31 December 2025 valuation snapshot is caught, so historical gains are protected — but from now on, the portfolio’s future appreciation is taxable when realised.
Second, the annual tax on securities accounts doubled, from 0.15% to 0.30%, on accounts averaging more than one million euros. Third — and unchanged, but now more painful in context — the 30% movable withholding on dividends and interest, and the 30% Reynders levy on the interest component of bond funds, remain in full force. Layer on regional inheritance tax that reaches 27% in Flanders and 30% in Brussels and Wallonia in the direct line, and far more for other heirs, and the picture is clear: the untaxed private portfolio is gone.
Where a Life-Insurance Wrapper Comes In
Private Placement Life Insurance is not new, and it is not exotic. In Belgian terms it is a Branch 23 unit-linked contract — typically issued from Luxembourg — inside which a diversified portfolio is held and managed by the insurer. What the 2026 reforms have done is sharpen its advantages, because the wrapper addresses precisely the charges that just became heavier.
The central benefit is deferral of the 30% movable tax. Held directly, a portfolio pays 30% on its dividend and interest yield every single year, whether or not the income is spent — a permanent leak from the compounding base. Held inside the wrapper, that income accrues to the insurer-owned portfolio without the 30% charge arising as it is earned, and the manager can rebalance without triggering tax. The portfolio compounds gross. Over a decade, on an income-generating portfolio, the difference between compounding gross and losing 30% of the yield each year is not a rounding error — it is a materially different terminal value.
The entry cost for all this is modest and, notably, was left alone in the reforms: a 2% premium tax on the amounts paid in. While the general insurance tax rose to 9.60% in 2026, life insurance kept its own specific rate. Two percent, once, at the door.
Be Honest About the Limits
This is where a serious adviser earns their fee, because the wrapper is not a magic box and clients deserve the caveats. Branch 23 gains now fall within the new capital-gains tax on surrender — so the 10% is deferred and timed, not avoided. The good news is that it applies only to post-2025 growth, only when the policyholder chooses to surrender, and the 10,000-euro annual exemption can be used repeatedly through partial surrenders. A 10% charge taken once, on your timetable, is a very different thing from 30% taken every year on income.
The securities tax is not escaped either: because the assets sit on the insurer’s account, Branch 23 holders bear a proportional share of the 0.30% levy indirectly. Say so plainly. The wrapper’s value is deferral, timing, consolidation, succession, and asset protection — not a securities-tax shelter.
The Cayman-Tax Point That Actually Matters
Belgium’s Cayman tax looks through certain foreign structures and taxes a Belgian resident on their income directly, whether or not it is distributed. Clients hear “offshore insurance from Luxembourg” and reasonably ask whether they are walking into it. The answer, confirmed by the tax authorities, is favourable: genuine unitised Branch 23 life-insurance policies are not targeted by the Cayman tax.
There is a boundary, and it is the whole game. A so-called “dedicated fund” — a wrapper more than half held by one person or related persons, in substance a single-investor vehicle the client directs — can be pulled into the look-through. The defence is substance: a genuine discretionary manager, a signed investment policy statement, real diversification, and no policyholder direction of individual trades. Get that right and the wrapper sits cleanly outside the Cayman tax. Get it wrong and it is just an offshore account with an insurance label, taxed as if the wrapper were not there.
The Succession Dimension
Belgium levies no wealth tax on net worth, but its regional inheritance tax is among the heavier charges in Europe, and it is succession — not an annual wealth levy — that drives most estate planning. A life-insurance wrapper is a well-understood instrument here: it allows a clean beneficiary designation, continuity of the investment structure across generations without a forced liquidation, and, for internationally mobile families, a portable contract recognised across borders. What it does not do by itself is remove Belgian inheritance tax — depending on how policyholder, insured, and beneficiary are configured, and on the region, the proceeds can fall within the taxable estate. That configuration is a design decision to make with counsel at inception, not an afterthought.
The Takeaway
The reforms did not make Belgium a bad place to hold wealth. They made it a place where holding wealth carelessly is expensive, and holding it deliberately pays. For a family with a substantial, actively managed, long-horizon portfolio, a compliant Luxembourg wrapper now defers the 30% income charge, times the new 10% gains charge, consolidates a fragmented portfolio into one clean reportable structure, and adds real asset protection — all for a 2% entry cost. The instrument was always there. The 2026 tax year is what made it worth a fresh look.