In cross-border transactions, construction projects and public procurement, the expression “surety bond” is often used as if it identified a single legal instrument. It does not.
The same commercial objective, protecting a beneficiary against the consequences of a contractor’s or principal’s failure to perform, may be achieved through instruments whose legal nature, payment triggers and enforcement mechanisms differ significantly from one jurisdiction to another.
Italy and Spain pursue similar commercial protection through materially different legal structures.
Economic equivalence does not necessarily mean legal equivalence.
Italy: from accessory suretyship to an autonomous guarantee
Italian law starts from the traditional fideiussione, governed by Articles 1936 et seq. of the Italian Civil Code. Its defining feature is accessoriness: the guarantor secures another person’s obligation and, as a general rule, may raise against the creditor the defences available to the principal debtor under Article 1945. Commercial practice has developed an alternative model: the contratto autonomo di garanzia. It is not a nominate contract specifically regulated by the Civil Code. Its legal foundation lies in contractual autonomy under Article 1322.
In Judgment No. 3947 of 18 February 2010, the Joint Sections of the Italian Supreme Court explained that the autonomous guarantee differs from traditional suretyship because the guarantor’s obligation is independent of the underlying obligation and protects the beneficiary’s economic interest through prompt payment of a predetermined sum, rather than performance of the principal debtor’s obligation.
The importance of wording under Italian law
Whether an Italian-law instrument operates as an accessory guarantee or an autonomous guarantee depends substantially on its contractual structure. The commercial name is not decisive: the document must be construed as a whole. Clauses requiring payment “on first demand” and “without exceptions” are particularly important.
Judgment No. 3947/2010 supports the view that such wording is, in principle, capable of identifying an autonomous guarantee, unless the overall terms of the instrument are clearly inconsistent with that characterisation.
Under a genuine autonomous guarantee, the guarantor cannot ordinarily rely on defences arising from the underlying relationship. The beneficiary is not normally required to obtain a judgment on the principal’s liability before calling the guarantee, provided that the formal and documentary requirements of the instrument are satisfied.
Autonomy does not mean absolute independence
Italian case law recognises limits to autonomy. The exceptio doli generalis seu presentis may prevent payment where clear and incontrovertible evidence shows that the demand is abusive or fraudulent, including where the guaranteed debt has unquestionably been discharged.
Objections relating directly to the guarantee, including compliance with its documentary trigger, validity, expiry and maximum amount, must also be distinguished from defences relating to the merits of the underlying contract. Other narrowly defined limits may concern the absence of the guaranteed relationship or illegality affecting the underlying transaction. It is therefore too broad to describe fraud as literally the only defence available under an Italian autonomous guarantee.
Spain: the seguro de caución takes a different legal route
Spanish law addresses the same commercial need through the seguro de caución, expressly regulated by Article 68 of Law 50/1980 on Insurance Contracts (Ley de Contrato de Seguro, or LCS), and frequently used alongside the public procurement regime under Law 9/2017 on Public Sector Contracts.
Under Article 68, if the policyholder (tomador del seguro) fails to perform its legal or contractual obligations, the insurer undertakes to indemnify the insured (asegurado), by way of compensation or penalty, for patrimonial loss suffered within the limits established by law or contract. Amounts paid by the insurer must be reimbursed by the policyholder.
- Tomador: the party that takes out the policy and whose legal or contractual obligations towards the beneficiary are secured.
- Asegurador: the insurer issuing the policy.
- Asegurado: the party in whose favour the protection operates.
Spanish surety insurance is not automatically an independent demand guarantee
The existence of a statutory regime does not automatically transform every seguro de caución into an autonomous guarantee payable merely upon demand. Article 68 connects the insurer’s obligation to the tomador’s failure to perform its legal or contractual obligations and to the policy-defined patrimonial consequences. That differs from an undertaking legally abstracted from the underlying relationship, although the policy wording and any applicable sector-specific regime must still be considered.
Spanish Supreme Court case law preserves the distinction between fianza and seguro de caución. In its judgment of 19 May 1990, the Civil Chamber distinguished the surety’s undertaking to perform following the principal debtor’s default from the insurer’s undertaking to compensate the creditor for loss caused by non-performance. The judgment of 23 April 2002 likewise discussed the insurance character of seguro de caución and the importance of the applicable legal and contractual regime, particularly in public procurement, where the guarantee regime under Articles 108 and 112 of Law 9/2017 may also come into play.
Spanish law does not reject autonomous guarantees. The narrower point is that autonomy should not be inferred solely from the insurance classification in Article 68 LCS. A seguro de caución should not, merely because it falls within Article 68, be equated with an Italian contratto autonomo di garanzia or an English-style on-demand bond.
The decisive question is not what the instrument is called, but what must be shown before payment becomes due.
The underlying contract and the payment trigger Italy
Where the instrument qualifies as a genuine autonomous guarantee, the guarantor’s obligation is structurally separated from the underlying relationship. Defences belonging to the principal debtor are generally excluded, subject to the narrow limits recognised by case law.
Spain
Under Article 68 LCS, the policy covers the consequences of non-performance by the tomador. The existence and scope of that non-performance, together with the terms defining the insured risk, may therefore remain relevant when determining whether the insurer must pay. The Spanish statutory model is consequently different from a pure first-demand guarantee, although particular wordings may create more immediate payment obligations.
Across both jurisdictions, the payment trigger can sit on a spectrum: from accessory liability tied to the principal obligation, through instruments requiring specified evidence of default, loss, termination or certification, to a documentary first-demand guarantee activated by a compliant demand. This classification affects liquidity exposure, evidence gathering, claims strategy and the timing of any challenge.
For this reason, a payment demand under a surety bond, whatever its label, should never be assessed categorically without first determining the instrument’s legal nature, wording and applicable regime.
Why the distinction matters for international surety business
Commercial documentation frequently uses labels such as surety bond, performance bond, first-demand guarantee, insurance guarantee, polizza fideiussoria and seguro de caución. Labels alone are not enough.
Depending on governing law and wording, an instrument marketed as a surety bond may operate as an accessory guarantee, an autonomous demand guarantee or an insurance-based security triggered by the principal’s non-performance. Claims, payment and recovery should be treated as parts of one lifecycle. Article 68 LCS expressly requires the tomador to reimburse the insurer for payments made. In Italy, recourse and reimbursement depend on the internal relationship between principal and guarantor and on the applicable legal qualification. In cross-border matters, the bond, underlying contract, indemnity arrangements, principal’s assets and enforcement proceedings may be connected with different jurisdictions. For underwriting and claims teams, these differences may directly affect liquidity exposure, payment timing, reserving and recovery strategy.
A practical cross-border checklist
- Legal type: accessory surety ship, autonomous guarantee, insurance contract or statutory public-law security?
- Governing framework: which law governs the instrument, and does a procurement or sector-specific regime apply?
- Payment trigger: actual breach, documented breach, patrimonial loss, administrative decision or a compliant demand?
- Defences: which objections arise from the underlying contract, which arise from the guarantee itself, and which are barred by special legislation?
- Duration: expiry date, claims period, automatic extensions, reductions and release mechanics?
- Premium and internal arrangements: can internal defaults affect the beneficiary under the applicable regime?
- Interim strategy: which court or authority can address urgent measures concerning a call or payment?
- Recovery: what counter-indemnity, collateral, subrogation or asset-enforcement routes remain after payment?
Conclusion: same market, different legal architecture
Italian law allows contractual practice to move from accessory suretyship toward a genuinely autonomous payment undertaking. Spanish law, by contrast, expressly regulates seguro de caución as an insurance contract and connects the insurer’s obligation with the tomador’s failure to perform. Article 68 does not, by itself, create a universal first-demand regime.
In an increasingly cross-border surety market, the real added value lies in combining local legal expertise with an international perspective. Working with professionals who understand surety across jurisdictions is therefore essential to navigate the differences between the Italian and Spanish systems and to leverage the strengths of both throughout the entire lifecycle of the bond.
