📅 Last updated: 8 May 2026
· 🏷 Topic: State bond (Staatsbon), OLO, fixed income, Treasury
· 🇧🇪 For: Belgian retail investors
The Belgian state bond (staatsbon) had a spectacular revival in 2023: the 1-year staatsbon of September 2023 attracted €21.9 billion in subscriptions — a historic record for a Belgian retail product. Since then, “staatsbon” has become a household word again.
What is a staatsbon?
A debt instrument issued by the Belgian state, specifically intended for retail investors. The state borrows money from citizens, pays interest, and repays the principal at maturity.
Unlike an OLO (Obligation Linéaire / Lineaire Obligatie — for institutional investors): the staatsbon is directly purchasable by retail investors, with attractive terms on specific issues.
Main types
| Type | Maturity | Intended for |
|---|---|---|
| Staatsbon — retail | Standard 5, 8 and 10 years; 1-year offered exceptionally (2023-2024) | Belgian retail investors |
| OLO | 5-30 years | Institutional investors (banks, insurers) — retail can buy existing OLOs on the secondary market |
How do you buy a staatsbon?
At issuance (primary market):
- Announced via the Treasury (FPS Finance) and in the Belgian press.
- Subscription period typically 2-3 weeks.
- Subscribe via your bank (KBC, BNP Paribas Fortis, Belfius, ING, etc.). You don’t need a separate securities account — your regular current account is often enough.
- Issue price often at par (100%); minimum amount €100 (in multiples of €100).
On the secondary market:
- Existing staatsbons and OLOs are tradable via your broker.
- Prices fluctuate with market interest rates (negatively correlated).
The 2023 story
In September 2023, the Treasury offered a 1-year staatsbon at 3.3% gross interest with a reduced withholding tax rate of 15% (instead of 30%). Net yield: 2.81%.
At that time, the average Belgian savings account was paying <1% gross (and many were much lower). The gap was so large that:
- More than 540,000 Belgians subscribed (official figure: 542,607 subscriptions across all channels, source: Belgian Debt Agency).
- €21.9 billion raised — far exceeding all expectations, setting a European record for a retail-targeted government bond.
- Result: massive capital shift away from banks toward the Belgian state.
Belgian banks responded with rapid savings rate increases to retain capital — the first time in years that savers had effective bargaining power.
Since then
The reduced 15% withholding tax applied to the three 1-year staatsbon issues that carried this regime: September 2023, March 2024 and September 2024. From the December 2024 issue onward, the standard 30% withholding tax rate applies again to the coupon — which makes staatsbons not much more tax-advantageous than a regulated savings account (where the first €1,020 tranche is exempt).
Since 1 January 2026, staatsbons also fall under the new 10% capital gains tax if you sell them on the secondary market before maturity at a gain — although this is rare with hold-to-maturity.
Pros and cons
Pros:
- ✅ Near-zero default risk (Belgian state credit ratings as of May 2026: AA- at S&P (downgraded from AA on 24 April 2026), A1 at Moody’s (downgraded on 17 April 2026), A+ at Fitch). Ratings can change over time.
- ✅ Predictable return when held to maturity.
- ✅ Accessible to retail investors with a low minimum.
- ✅ No TOB (stock exchange tax) on purchase at issuance (exception).
- ✅ Investing without needing a broker account.
Cons:
- ❌ Low yields — staatsbons are rarely issued with attractive terms.
- ❌ Capital locked up for the maturity (sale on the secondary market is possible but at market price).
- ❌ Inflation erosion: if the 1-year rate is 3% and inflation is 3.5%, you lose real purchasing power.
- ❌ Compared to equities, it delivers far less return over the long term.
When does a staatsbon make sense?
- Money you need within 1-5 years — can’t be in volatile equity ETFs.
- Defensive allocation in a diversified portfolio (5-20% in bonds/cash).
- At exceptional issues like September 2023 — high interest + withholding tax exemption.
- For those who want zero volatility in part of their wealth.
Not sensible for:
- Long-term wealth building (>10 years) — equities historically beat staatsbons.
- Money you might need tomorrow — use a savings account instead.
💡 A staatsbon is therefore one tool in the toolkit, not a replacement for an equity portfolio. For a long horizon: equity ETF core + bonds/staatsbons as a defensive supplement.
🔗 For the full bond context: see Bonds and fixed income (NL).
Sources
- Federal Treasury — Staatsbon and OLO
- FPS Finance — Withholding tax on coupon
- Wikifin — Staatsbon explained
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