How to Use and Enforce Performance Guarantees in Bulgaria: Step-by-step (2026)

Performance guarantees Bulgaria contractors and employers rely on have become a central battleground as infrastructure and public procurement activity accelerates into 2026. A performance guarantee is a financial security instrument, typically a bank guarantee, an insurance-backed bond, retained sums or a parent company undertaking, that protects one contracting party against the other’s failure to perform. This guide sets out the practical, step-by-step procedure for calling, enforcing and defending performance guarantees in Bulgarian construction and procurement contracts, with the documents, indicative timelines and costs a beneficiary or a challenged contractor should expect. It is written for professionals who need procedure, not marketing.

Overview: What is a performance guarantee in Bulgaria?

A performance guarantee secures the obligations of a contractor (or occasionally an employer) under a construction or procurement contract. Where the secured party defaults, the beneficiary may recover a defined sum from a third party, the guarantor, rather than pursuing the defaulting party directly and waiting out litigation. The legal nature of the instrument depends heavily on its wording: an unconditional “first demand” guarantee is generally treated as an autonomous obligation of the guarantor, largely independent of the underlying contract, whereas a conditional guarantee requires the beneficiary to prove default before payment.

Types of guarantees

• First-demand bank guarantee. Issued by a bank, payable on presentation of a compliant written demand, generally without proof of the underlying breach.
• Performance bond. Typically issued by an insurer or bonding provider; often involves underwriting assessment and may be conditional.
• Retention. Sums withheld by the employer from interim payments and released after completion and the defects liability period.
• Parent company guarantee. A corporate undertaking by a contractor’s parent to answer for the subsidiary’s default.

When parties typically require them

Guarantees are standard in public procurement contracts, EPC arrangements and FIDIC-based construction contracts. Contracting authorities frequently require performance security calculated as a percentage of contract value, within the limits set by the applicable procurement framework, and private employers replicate the practice. The choice of instrument, and its precise wording, determines how quickly and how defensibly a beneficiary can convert it into cash.

Eligibility: When can a contractor or employer call a guarantee?

The right to call a performance guarantee is contractual first and procedural second. Before serving any demand, the beneficiary must confirm that a call trigger has occurred under the underlying contract and that the guarantee’s own wording permits payment. A call that is technically permitted by the guarantee but not justified by the contract may expose the beneficiary to a wrongful-call claim, restitution and damages.

Contract terms that permit a call

Read the contract for the events that entitle the beneficiary to draw. Common triggers include failure to remedy a notified default within a cure period, failure to progress the works, insolvency, or abandonment. Note any notice mechanics: many contracts require a prior default notice, a specified cure window and a formal certificate before the guarantee may be called. Missing a mandatory notice step is one of the most frequent grounds on which a call is later challenged. Confirm the identity of the named beneficiary and that the guarantee is still within its validity period.

Public procurement constraints and procuring entity limits

In public procurement, calling a performance guarantee is constrained by the Public Procurement Act (Zakon za obshtestvenite porachki) and by general principles of proportionality that flow through from EU procurement directives. A procuring entity must act within the scope of the guarantee and the contract, should not draw amounts disproportionate to the actual default, and must observe administrative practice published by the Public Procurement Agency (Agentsia po obshtestveni porachki, AOP). Contractors facing a call by a contracting authority should check both the statutory framework and the specific tender documentation, which frequently sets out the permitted grounds and the notification steps a procuring entity must follow.

Choosing counsel and red flags

Enforcement of performance guarantees Bulgaria disputes turn on precise document handling, so competent local counsel is decisive. When selecting a lawyer, watch for these red flags:

• Vague fee positions. Reluctance to commit to a fee estimate or a clear hourly rate.
• No procurement or construction track record. General commercial lawyers may not know AOP practice or FIDIC mechanics.
• Overpromising speed. Guaranteeing a bank will pay within a fixed number of days regardless of guarantee wording.
• Poor document discipline. Failure to insist on contemporaneous evidence and chain-of-custody.

See our guide on how to choose a corporate lawyer in Bulgaria (2026 guide) for a fuller selection framework.

Step-by-step: How to call and enforce a performance guarantee in Bulgaria

This is the core procedure. The sequence below assumes a construction or procurement context and covers both the routine path (guarantor pays) and the contested path (guarantor refuses, or the contractor challenges the call). Treat each step as a checkpoint: a defect at an early step frequently undermines the entire enforcement effort.

1. Step 1, Review the guarantee document and contract. Read the guarantee word for word. Confirm whether it is first-demand or conditional, identify the exact beneficiary name, the guaranteed amount, the expiry date, the governing law and the presentation requirements (where, to whom and in what form the demand must be delivered). Cross-check against the underlying contract to confirm the call trigger and any notice preconditions.
2. Step 2, Confirm call conditions and prepare the call notice. Verify that every contractual precondition has been satisfied, default notice served, cure period expired, any required certificate issued. Draft the demand strictly in the wording the guarantee prescribes; a first-demand instrument is construed literally, so deviation from the required form is a common reason banks reject a demand. If the guarantee or contract is in a foreign language, arrange certified translation before serving.
3. Step 3, Prepare the document pack for the guarantor. Assemble the instrument, the demand, and any supporting documents the guarantee requires on its face. For unconditional first-demand guarantees the demand itself may suffice; for conditional instruments, include the evidence of default listed in the Required Documents table below.
4. Step 4, Serve the demand on the guarantor. Deliver the demand by the method the guarantee specifies (often to a named branch, in original, within banking hours before expiry). Obtain proof of service, a delivery receipt, courier confirmation or bank stamp. Late or improperly served demands, especially those presented after expiry, are routinely refused.
5. Step 5, Observe the guarantor’s response window. Banks and insurers conduct an internal review of the demand’s compliance. There is no single statutory term; in practice a bank typically processes a compliant first-demand call within a short number of business days. Keep the file open for prompt response to any request for clarification.
6. Step 6, If the guarantor pays. On receipt of funds, record the payment against the beneficiary’s claim, update contract accounts and address any consequential steps under the contract, for example, whether the contractor must top up or replace the guarantee, and whether any surplus must be accounted for. Preserve the payment record for any later reconciliation.
7. Step 7, If the guarantor refuses. A refusal usually rests on non-compliance of the demand, expiry, or an allegation of fraud or manifest abuse. Assess whether the defect is curable and re-present if time permits. Where the refusal is substantive, move to enforcement: a civil claim against the guarantor and, where urgency demands, provisional measures to preserve the position.
8. Step 8, Handle public procurement specifics. Where a contracting authority is the beneficiary or the counterparty, observe the notification and remedy framework under the Public Procurement Act. A contractor challenging a call may have administrative and judicial routes; a procuring entity calling a guarantee must document proportionality and observe its own procedural obligations.
9. Step 9, Choose arbitration or the courts. The dispute-resolution clause governs. Where the contract provides for arbitration, commence there; where it provides for the Bulgarian courts, file in the competent court. If a first-demand guarantee is disputed, provisional/injunctive measures may be sought to preserve funds pending resolution, subject to the court’s assessment. Foreign arbitral awards require recognition before execution in Bulgaria.
10. Step 10, Recover amounts paid under a wrongful call. A contractor who has suffered a wrongful call may claim restitution of the sum paid and damages from the beneficiary. This is a claim on the underlying contract, distinct from the autonomous guarantee, and is subject to the general limitation periods under the Obligations and Contracts Act (Zakon za zadalzheniyata i dogovorite).
11. Step 11, Protect documents and evidence. Maintain a strict chain of custody for the original guarantee, the demand, proof of service and all default evidence. Contemporaneous, date-stamped records (inspection reports, default notices, correspondence) carry far greater weight than reconstructed documents.
12. Step 12, Complete post-enforcement steps. After the matter concludes, address the release of any remaining contract security, the handling of retention monies and the return or cancellation of the guarantee instrument. Ensure the guarantee is formally released to avoid ongoing exposure or bank charges.

Enforcement timeline for performance guarantees Bulgaria beneficiaries

The durations below are indicative only. Actual timing depends on the guarantee wording, the guarantor’s internal processes, the chosen forum and the court or arbitral institution’s workload.

The escalation matrix runs bank → provisional measures → local courts or arbitration → recognition and execution. Beneficiaries should treat provisional measures as a key urgency tool where funds risk dissipation, because a favourable order can preserve the position months before the main claim is heard.

Required documents to call or enforce a guarantee

The precise document pack depends on whether the guarantee is first-demand or conditional and whether enforcement proceeds through the guarantor, the courts or by recognition of a foreign award. Translations of any foreign-language document should be certified, and documents originating abroad often require apostille or legalisation before a Bulgarian court will accept them. Powers of attorney presented to a bank frequently need notarisation.

Timeline & deadlines: procurement vs private contracts

Deadlines diverge sharply between the two contexts. In public procurement, contractors challenging a procuring entity’s conduct must observe the appeal windows set under the Public Procurement Act and the tender documentation; these are short and strictly applied, and procurement remedies before the Commission for Protection of Competition (KZK) and the Supreme Administrative Court operate on tight statutory deadlines. In private construction contracts, the operative constraints are the guarantee’s own expiry date and the general limitation (prescriptive) periods for contract claims under the Obligations and Contracts Act, which govern how long a party has to pursue restitution after a wrongful call or damages for breach.

Where funds are at risk, urgency remedies, provisional measures, run on a separate, faster track and should be pursued in parallel rather than after the main claim. Always verify the current statutory text via the State Gazette and current AOP guidance before relying on any specific period.

Costs & fees

Enforcing performance guarantees Bulgaria beneficiaries pursue carries several cost layers: legal fees, bank handling charges, court or arbitration fees, translation and legalisation, technical expert reports, and enforcement costs. Counsel may work on an hourly or fixed-fee basis; complex contested calls are rarely suitable for contingency pricing. Banks charge a handling fee for processing a demand, and international arbitration is generally more expensive than the state courts for the same dispute value. In the Bulgarian state courts, the state fee for a monetary claim is set as a percentage of the claim value under the applicable state fees tariff, so the figures below are indicative and should be checked against current tariffs.

What changes in 2026: regulatory & market updates

The practical environment for performance guarantees Bulgaria parties operate within is shaped by rising infrastructure and procurement volumes, which increases both the number of guarantees issued and the frequency of contested calls. Beneficiaries and contractors should monitor the State Gazette for amendments to the Public Procurement Act and any updated AOP guidance on guarantee types and proportionality, and watch for Bulgarian National Bank commentary affecting bank processing of demands. Note that Bulgaria’s adoption of the euro affects the presentation and denomination of new guarantees and contract values, so confirm the currency and conversion position on any new or existing instrument. Industry observers expect closer scrutiny of proportionality in procurement calls and continued emphasis on strict documentary compliance for first-demand instruments.

The likely practical effect is that beneficiaries who prepare disciplined document packs will enforce faster, while poorly documented calls will face greater resistance. Confirm the current position against the primary sources before acting.

Common pitfalls when calling guarantees & how to avoid them

• Wrong beneficiary name. A demand from an entity not named as beneficiary will be rejected. Confirm the exact name matches the instrument.
• Missing or defective signature. Ensure the demand is signed by an authorised signatory with a valid, notarised power of attorney where the bank requires one.
• Failing to follow notice mechanics. Skipping a default notice or cure period required by the underlying contract is a leading ground for challenging a call.
• Premature call. Drawing before the trigger has crystallised exposes the beneficiary to a wrongful-call claim and restitution.
• Presenting after expiry. A demand delivered after the guarantee’s validity date is generally unenforceable; diarise the expiry well in advance.
• Failing to preserve evidence. Reconstructed or undated evidence weakens the claim; keep contemporaneous, date-stamped records and a clear chain of custody.

Comparison: Performance bond vs Bank guarantee vs Retention vs Parent company guarantee

Choosing counsel and next steps

Enforcing performance guarantees Bulgaria contractors and employers depend on rewards precision, speed and disciplined documentation. If you need on-the-ground enforcement help, request a shortlist of Bulgarian construction and procurement lawyers through our choose a corporate lawyer in Bulgaria (2026 guide).

This guide is general information and not legal advice. Contact counsel for case-specific advice.

Sources

1. State Gazette (Darzhaven Vestnik), Bulgaria
2. Public Procurement Agency (AOP), Bulgaria
3. Bulgarian Ministry of Justice
4. Bulgarian National Bank (BNB)
5. Supreme Court of Cassation (Върховен касационен съд), Bulgaria
6. EUR-Lex (EU Public Procurement Directives)