Key data
| Regulation | Resolution of June 12, 2026, from the General Directorate of the Treasury and Financial Policy |
|---|---|
| Publication | June 15, 2026 |
| Entry into force / Auction date | June 18, 2026 |
| Admission to trading on AIAF | June 23, 2026 |
| Affected parties | Institutional investors, Market Makers and financial entities participating in Treasury auctions |
| Category | Tax News |
| Enabling legal framework | Order ECM/2/2026 (annual debt issuance program) |
| Type of operation | Expansion of previous issuances (same reference as previous series) |
The Spanish Treasury activates a new long-term financing round in June 2026. Three series of State Bonds go to auction on June 18, 2026, with maturities reaching July 2040. These are expansions of already existing issuances, which means that the new securities are integrated into previous references and share their original issuance conditions. The operation is covered by the annual debt program authorized by Order ECM/2/2026.
What does this regulation establish?
The resolution convenes the auction of three series of State Bonds with the following characteristics:
| Series | Maturity | Coupon | Expiration | Expected gross return |
|---|---|---|---|---|
| State Bond | 7 years | 3.00% | January 2033 | Within the range 2.88% – 3.83% |
| State Bond | 10 years | 3.40% | October 2036 | Within the range 2.88% – 3.83% |
| State Bond | ~14 years | 4.90% | July 2040 | Within the range 2.88% – 3.83% |
Being expansions of previous issuances, the new securities are managed as a single issuance together with the previous references already in circulation. This ensures liquidity in the secondary market from the first day of trading.
The auction process contemplates two phases:
- First round: open to all authorized participants in Treasury auctions.
- Second round: exclusive access for Market Makers, at the resulting marginal price from the first round.
The securities will be admitted to trading on AIAF Fixed Income Market from June 23, 2026, five days after the auction.
Economic and operational impact
For participants in the public debt market, this auction presents three vectors of direct impact:
- Profitability: the range of expected gross returns (2.88% – 3.83%) positions these issuances at competitive levels compared to investment-grade corporate fixed income in the same duration bracket.
- Portfolio management: the availability of three simultaneous duration tranches (7, 10 and ~14 years) allows institutional investors to adjust the average duration of their sovereign fixed income portfolios in a single auction day.
- Competitive advantage for Market Makers: exclusive access to the second round at the marginal price allows them to acquire additional paper without competition, at an already known price, which reduces execution risk.
The fact that these are expansions of existing series reduces the risk of liquidity fragmentation: the new securities are added to the volume already in circulation of each reference, facilitating operations in the secondary market after admission to AIAF on June 23.
Who does it affect?
- Institutional investors: investment funds, pension funds, insurance companies and asset managers that participate directly in Treasury auctions or access the secondary market on AIAF.
- Market Makers: financial entities with official status as Treasury Market Maker, which have exclusive access to the second round.
- Financial entities (banks and savings banks): that manage public debt portfolios or act as intermediaries for institutional clients.
- Corporate treasuries of large companies: that invest liquidity surpluses in sovereign debt at medium and long term.
- CFOs and investment managers: who must assess whether to incorporate these references into their portfolios before June 18 or access via secondary market from June 23.
Practical example
A pension fund with a mandate to invest in Spanish sovereign fixed income decides to participate in the auction on June 18. It submits a bid for the 10-year Bond at 3.40% (maturity October 2036).
- If the resulting marginal price from the auction implies a return of 3.40% (at par), the fund receives the securities at 100% of par value and will receive an annual coupon of 3.40% until October 2036.
- If the marginal price implies a return of 3.20% (above par), the fund pays more than 100% of par value but secures an annual return of 3.20% until maturity.
- The expected gross return for this series is within the range 2.88% – 3.83% published in the resolution.
A Market Maker that has not covered its quota in the first round can attend the second round at the resulting marginal price, without competing with other bidders, and thus complete its target position in this reference.
What should companies do now?
- Verify participation status: confirm whether your entity is authorized to participate directly in Treasury auctions or if you must access via an authorized intermediary.
- Review the investment mandate: check that the three references (7, 10 and ~14 years) fit within the duration and rating limits allowed in the portfolio investment policy.
- Prepare the bid before June 18: define price limit and volume for each series you want to participate in, taking into account the range of expected returns (2.88% – 3.83%).
- If you are a Market Maker: plan the second round strategy to take advantage of exclusive access to the resulting marginal price.
- Post-auction monitoring: the securities are admitted to AIAF on June 23; if you do not participate in the auction, evaluate the purchase in the secondary market from that date.
- Consult Order ECM/2/2026: review the annual issuance program to anticipate the auction calendar for the second half of 2026.
Frequently asked questions
When is the State Bond auction in June 2026?
The auction is scheduled for June 18, 2026. The resulting securities will be admitted to trading on AIAF Fixed Income Market from June 23, 2026.
What rates and maturities are auctioned on June 18, 2026?
Three series are auctioned: Bond at 7 years at 3.00% (maturity January 2033), at 10 years at 3.40% (maturity October 2036) and at ~14 years at 4.90% (maturity July 2040). Expected gross returns range between 2.88% and 3.83%.
What advantage do Market Makers have in this auction?
Market Makers have exclusive access to a second round at the resulting marginal price from the first round. This allows them to acquire additional securities without competition and at an already known price, reducing execution risk.
Are these new issuances or expansions of existing series?
These are expansions of previous issuances. The new securities are managed as a single issuance together with the previous references already in circulation, which ensures greater liquidity in the secondary market from the first day of trading on AIAF (June 23).
Under what legal framework are these issuances authorized?
The operation is framed within the annual debt issuance program authorized by Order ECM/2/2026. The specific convocation is made through the Resolution of June 12, 2026 from the General Directorate of the Treasury and Financial Policy, published in the BOE on June 15, 2026.
Official source
Consult complete regulation at official source
Notice: This article is purely informational in nature 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-2026-13011