Key data
| Regulation | Resolution of June 26, 2026, from the General Directorate of the Treasury and Financial Policy |
|---|---|
| Publication | June 29, 2026 |
| Entry into force / Auction date | July 2, 2026 |
| Admission to trading on AIAF | July 7, 2026 |
| Affected parties | Institutional investors, Market Makers and financial entities participating in public debt auctions |
| Category | Regulatory Changes — Public Debt |
| Year | 2026 |
| Reference framework | Annual calendar of ordinary auctions approved in January 2026 |
On July 2, 2026, the Spanish Public Treasury opens four investment windows in sovereign debt with maturities ranging from 5 to 10 years. The Resolution of June 26, 2026 from the General Directorate of the Treasury and Financial Policy convenes the corresponding auctions and sets the conditions for each reference. All are expansions of existing issues, which reduces liquidity risk compared to new references.
For institutional investors and Market Makers, this convocation defines the immediate operational calendar: auction date, available references, coupon rates and conditions for accessing second rounds.
What does this regulation establish?
The resolution convenes four references of Spanish sovereign public debt, all of them expansions of previous issues. Below are the exact conditions for each one:
| Instrument | Maturity | Coupon | Expiration | Characteristic |
|---|---|---|---|---|
| State Bonds | 5 years | 2.60% | May 2031 | Strippable bond (requires prior authorization) |
| State Obligations | ~8 years | 3.25% | April 2034 | Strippable bond (requires prior authorization) |
| State Obligations | 10 years | 3.40% | October 2036 | Strippable bond (requires prior authorization) |
| State Obligations indexed to inflation | 10 years | 1.15% | November 2036 | Real coupon; protection against CPI |
All securities have the classification of strippable bonds, although stripping requires prior authorization from the General Secretariat of the Treasury. This convocation is part of the annual calendar of ordinary auctions approved in January 2026.
The issues will be admitted to trading on AIAF Fixed Income Market from July 7, 2026. Market Makers will have exclusive access to second rounds, which are awarded at the marginal price resulting from the main auction.
Economic and operational impact
For participants in the primary public debt market, this auction presents a range of options with different risk-return profiles:
- 5-year Bond (2.60%): Shorter maturity, lower sensitivity to interest rates. Defensive option for portfolios with medium-term horizon.
- ~8-year Obligation (3.25%): Balance between duration and nominal yield. Intermediate reference on the Spanish sovereign curve.
- 10-year Obligation (3.40%): Longer duration and highest coupon among nominal references. Benchmark reference of the Spanish sovereign market.
- 10-year Inflation-indexed Obligation (1.15%): The real coupon of 1.15% is complemented by the principal adjustment according to CPI. Relevant in environments of persistent inflation.
As these are expansions of existing references, investors benefit from greater secondary liquidity compared to new issues. Trading on AIAF from July 7 allows for quick exit if market conditions change.
Market Makers obtain a significant operational advantage: exclusive access to second rounds at the marginal price allows them to complete positions without competing in the open auction, reducing acquisition costs at times of high demand.
Who does it affect?
- Institutional investors: Investment funds, pension funds, insurance companies and asset managers that participate in Treasury auctions or acquire debt in the secondary market from July 7 on AIAF.
- Market Makers: Entities with official status that have exclusive access to second rounds awarded at the marginal price.
- Financial entities (banks and savings banks): Regular participants in Spanish sovereign debt auctions for balance sheet management and liquidity ratio compliance.
- Portfolio managers with exposure to Spanish sovereign fixed income: Must assess the impact on duration and yield of their portfolios given the new allocations.
- Entities interested in bond stripping: Those contemplating stripping operations (strips) must request prior authorization from the General Secretariat of the Treasury.
Practical example
A pension fund with a mandate to invest in Spanish sovereign debt and a long-term horizon analyzes the four available references on July 2, 2026.
It decides to participate in the auction of 10-year Obligations at 3.40% (maturity October 2036) as it is the benchmark reference with the highest nominal coupon. It submits a competitive bid in the main auction. If awarded, the securities will be available for trading on AIAF Fixed Income Market from July 7, which allows it, if necessary, to unwind the position in the secondary market quickly.
If the fund had Market Maker status, it could also participate in the second round at the marginal price resulting from the auction, completing its target position without additional competitive pressure.
On the other hand, an insurance company with liabilities indexed to inflation will particularly value the Obligations indexed to CPI at 1.15% (maturity November 2036), as the real coupon plus the principal adjustment offers natural protection against inflation over a 10-year horizon.
What should companies do now?
- Verify the operational calendar: The auction is on July 2, 2026. Confirm internally the deadlines for submitting bids according to each entity's procedures.
- Analyze the four available references based on the duration profile, type of coupon (nominal vs. real) and target maturity of the portfolio.
- Evaluate the inflation-indexed reference (1.15%, maturity Nov. 2036) if the portfolio has liabilities or commitments linked to CPI: it offers real protection against persistent inflation.
- Confirm Market Maker status if you want to access second rounds at the marginal price. Only entities with this official status have exclusive access.
- Process prior authorization from the General Secretariat of the Treasury if you contemplate carrying out stripping operations (strips) on the awarded bonds. The strippable classification does not imply automatic authorization.
- Plan trading on AIAF: The securities will be admitted to trading from July 7, 2026. Coordinate with trading desks the strategy for entry or exit in the secondary market.
Frequently asked questions
When is the State Bonds and Obligations auction for July 2026?
The auction is convened for July 2, 2026, according to the Resolution of June 26, 2026 from the General Directorate of the Treasury and Financial Policy. The awarded securities will be admitted to trading on AIAF Fixed Income Market from July 7, 2026.
What references are auctioned on July 2, 2026 and what coupon rates do they have?
Four references are auctioned: State Bonds at 5 years at 2.60% (maturity May 2031), Obligations at ~8 years at 3.25% (maturity April 2034), Obligations at 10 years at 3.40% (maturity October 2036) and Obligations at 10 years indexed to inflation at 1.15% (maturity November 2036). All are expansions of already existing references.
What advantage do Market Makers have in this auction?
Market Makers have exclusive access to second rounds, which are awarded at the marginal price resulting from the main auction. This allows them to complete positions without competing in the open auction, reducing acquisition costs at times of high demand.
Are the auctioned bonds strippable? What does that mean?
Yes, all securities have the classification of strippable bonds. However, carrying out stripping operations (strips) requires prior authorization from the General Secretariat of the Treasury. The strippable classification does not grant automatic authorization to strip.
What is the difference between nominal Obligations and inflation-indexed Obligations auctioned in July 2026?
Nominal Obligations (3.25% and 3.40%) pay a fixed coupon on the principal. Inflation-indexed Obligations at 1.15% (maturity November 2036) pay a real coupon of 1.15%, but the principal is adjusted according to CPI evolution, offering protection against inflation. They are especially relevant for portfolios with liabilities linked to cost of living.
Official source
Consult complete regulation at official source
Disclaimer: This article is for informational purposes only and does not constitute legal advice. For specific decisions, consult a qualified professional. Source: https://www.boe.es/diario_boe/txt.php?id=BOE-A-2026-14106