A valid invoice is only the start of a recoverable claim. ARG helps establish the debtor, prove delivery and maturity, and choose payment-order, litigation or enforcement steps.
Clients often ask ARG whether an unpaid invoice is enough to start collecting against a Bulgarian buyer. The goods may have arrived, yet the buyer disputes the quantity, says another group company placed the order or promises payment while moving its assets. The useful question is both whether the debt can be proved and whether a judgment can lead to payment.
Our Bulgarian attorneys can assist in the following situations.
The agreement, delivery and payment conditions establish why the invoiced sum is due.
A debtor’s objection may require the creditor to prove the claim in a subsequent action.
Reminders, acknowledgements and enforcement acts have different legal effects.
An enforceable title should be supported by a realistic assessment of assets, priorities and costs.
A commercial invoice must connect to an actual agreement, performance and a due payment obligation. Printing a due date on a document does not necessarily prove that the buyer accepted that term. The seller must also show why this particular legal person owes the price.
The creditor must identify an obligation owed by the particular defendant and show that the amount claimed has become payable. For commercial sales, the starting framework is the Commerce Act (Търговски закон, ТЗ), particularly Article 327(1) on the buyer’s obligation to pay the price. A limited comparison is the seller’s action for the price under section 49 of the Sale of Goods Act 1979 in England and Wales. The conditions are not interchangeable. Bulgarian commercial payment rules and the actual agreement determine whether this buyer owes this creditor the stated sum.
An invoice records a commercial assertion, but its issue alone does not prove every element of that assertion. The order, agreed price, description of the goods, delivery records and acceptance correspondence connect the invoice to the underlying sale. Where a group uses several companies, the claim belongs to the contracting seller or a person who validly acquired its receivable. The defendant is ordinarily the contracting buyer. A director who negotiated the transaction does not become personally liable merely because the company later fails to pay. A separate undertaking or another established legal basis would be needed.
The best combination depends on the objection. A signed delivery record can establish quantity and receipt, while correspondence may show acceptance or agreed changes. Accounting entries can corroborate recognition by the buyer, but are assessed with the rest of the evidence.
The delivery evidence must answer practical questions rather than merely fill a folder. A transport document may show arrival at the warehouse but leave uncertain whether the stated quantity was received. A signed acceptance record may identify the goods accurately while raising a question about the signatory’s role. Commercial conduct after delivery can resolve that uncertainty. A buyer’s resale of the goods, partial payment identifying the invoice, or correspondence requesting time for the balance can support the seller’s account. Conversely, a prompt documented rejection may undermine an assertion that the goods were accepted without objection.
Accounting treatment can also matter. In Decision No. 228 of 7 January 2015, commercial case No. 3597/2013, the Supreme Court of Cassation, First Commercial Division, treated the buyer’s recording of the liability and use of the associated tax credit as an extrajudicial acknowledgment. The court nevertheless recognised that acknowledgment is not evidence of absolute force. The practical consequence is that an unsigned invoice is not necessarily fatal, but neither should the creditor assume that its own accounting entries conclusively bind the buyer. Evidence originating from the debtor and the surrounding transaction remains particularly valuable.
The agreed payment trigger comes first. Payment after acceptance differs from payment on delivery or a fixed calendar date. If no period was agreed, the statutory mechanism must be applied to the actual receipt, delivery and acceptance chronology rather than automatically to the invoice’s issue date.
The due date needs its own proof. A contract providing payment thirty days after acceptance requires evidence of acceptance and of the agreed mechanism for calculating that period. Where no payment period was agreed, Article 303a(3) of ТЗ establishes a fourteen-day rule linked to receipt of the invoice or payment request, with a different starting point where receipt cannot be established or the invoice preceded the goods or service. An agreed or legally required inspection can engage Article 303a(4). Simply using the date printed on the invoice may therefore overstate both lateness and interest.
The financial claim should distinguish principal from consequences of delay. Where the statutory conditions are met, Article 309a(1) of ТЗ provides statutory interest and compensation for recovery costs of at least forty euros without a further demand. The creditor must have performed and the debtor must be in payment default, subject to the provision’s treatment of agreed terms. Higher actual losses or recovery expenses require their own legal and evidential basis. A transparent calculation identifies each invoice, due date, credit note and payment so that the court can award the amount proved rather than reconstruct an unexplained commercial balance.
A timely objection means the creditor generally has to prove the underlying debt in a claim. It does not establish that the invoice was false. The important consequence is the new procedural deadline, which does not wait for ongoing commercial negotiations.
The available procedural routes are governed by the Civil Procedure Code (Граждански процесуален кодекс, ГПК). The closest broad comparison in England and Wales is the distinction between obtaining a judgment and selecting enforcement measures under the Civil Procedure Rules, including Part 70. Bulgarian law likewise separates recognition of the claim from compulsory collection. A persuasive demand letter may produce voluntary payment, but it does not itself authorise a bailiff to seize the debtor’s property. The creditor needs the appropriate enforceable act and the procedural conditions for using it.
The debtor may object to the order within one month after service under Article 414(2) of ГПК. An ordinary objection generally does not need reasons. Consequently, silence during commercial negotiations does not assure an uncontested judicial route, and a bare procedural objection does not prove that the debt is fictitious. It means that the creditor may need to establish the claim through litigation. The order procedure is useful because an uncontested claim can progress without a full merits trial, but its efficiency depends on what happens after proper service.
A timely objection normally leads to instructions to bring a claim. The creditor has one month from the court’s communication under Article 415(4) of ГПК, not a fresh period chosen by the creditor after negotiations end. The declaratory claim under Article 422 requires proof of the underlying obligation. If the statutory deadline is respected, the claim is treated as filed from the payment-order application date. Missing it risks cancellation of the order and any associated writ. A debtor’s informal assurance that payment is imminent does not replace compliance with this procedural deadline.
An ordinary invoice is not transformed into an immediately enforceable document by being overdue. The creditor needs a document in the statutory list and an obligation that the document establishes as enforceable. Conditions depending on delivery or another event require the specified documentary proof.
Immediate enforcement is a different route. It requires a document falling within Article 417 of ГПК, such as an appropriate notarised agreement establishing a payment obligation under paragraph 1, item 3. An ordinary supplier’s invoice does not become such a document merely because it is overdue or accepted in an accounting system. The court examines external regularity and the enforceable obligation under Article 418. If payment depends on the creditor’s counterperformance or another event, the additional proof required by Article 418(3) becomes decisive. The document must support the particular sum sought, not just demonstrate that the parties once had business relations.
The debtor retains procedural protections even where immediate enforcement is allowed. An appeal under Article 419 and a request to suspend enforcement under Article 420 address distinct questions. An objection does not automatically suspend enforcement for the documents covered by Article 420(1). Conversely, written evidence of non-liability can justify judicial suspension in the prescribed circumstances. Both parties therefore need to distinguish the existence of the debt from the temporary enforceability of the document. A full claim may be the more direct route where substantial contractual issues are already clearly contested, while interim protection can be considered separately when specific assets are at risk.
Judgment establishes the enforceable right. Collection requires identifying and pursuing assets belonging to the debtor, accounting for exemptions and competing creditors. A company may lose the case yet lack sufficient unencumbered assets to pay it in full.
Bank accounts and customer receivables can provide practical routes where the debtor remains commercially active. An attachment of a bank account is limited to the enforcement debt under Article 507a of ГПК. For another receivable, the third-party debtor’s obligations under Articles 507 and 508 include responding to the attachment and addressing whether the attached debt is recognised. The existence of a customer relationship does not prove that a payable balance currently exists. The creditor must distinguish an identified receivable from a hoped-for future transaction and assess the effect of competing attachments or asserted rights.
Collection is complete only when the received money is correctly accounted for. If several creditors compete for insufficient proceeds, distribution under Article 460 of ГПК applies lawful priorities before proportional allocation of the remainder. A creditor may therefore recover less than the face value of its title. Later payment or another relevant post-judgment event can also support a debtor’s challenge under Article 439, within that provision’s limits. The final reconciliation should identify principal, interest, recoverable costs and any unpaid remainder, so that attachments are released through the proper procedure and neither party remains exposed to an inaccurate demand.
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Compulsory collection proceeds under the Bulgarian Code of Civil Procedure (Граждански процесуален кодекс, ГПК), including Articles 426 and 507 to 508. England and Wales similarly distinguish obtaining judgment from selecting a method of enforcement under the Civil Procedure Rules, Part 70. Available Bulgarian targets can include bank accounts, customer receivables, vehicles and real property, but only within the applicable rules and the debtor’s rights.
An asset transfer may require a separate creditor-protection action, while insolvency changes the recovery framework itself. The first inquiry concerns the transaction, its date, prejudice and the parties’ knowledge. The second concerns collective claims, statutory filing periods and restrictions on individual enforcement.
Protection against a prejudicial transfer is available under Article 135 of the Bulgarian Obligations and Contracts Act (Закон за задълженията и договорите, ЗЗД). A limited functional comparison is protection against transactions defrauding creditors under section 423 of the Insolvency Act 1986 in England and Wales. That provision targets transactions at an undervalue intended to prejudice creditors; its distinct elements must not be substituted for the Bulgarian test.
A completed asset transfer requires a more specific analysis. A creditor may seek relative ineffectiveness of a prejudicial transaction where the statutory knowledge requirements of Article 135 ЗЗД are met. For a transaction for value, the counterparty’s knowledge of prejudice is also relevant. Transactions predating the claim have an additional intention requirement. The remedy is not a general cancellation of every sale by an indebted company. It concerns the creditor’s ability to obtain satisfaction despite a transaction that meets the statutory conditions, and it requires evidence of the debt, prejudice, timing and relevant state of knowledge.
Insolvency is regulated by the Bulgarian Commerce Act (Търговски закон, ТЗ). The nearest functional comparison is collective liquidation under the Insolvency Act 1986 in England and Wales, where assets are realised and distributed for creditors as a group. Bulgarian stays, claim-filing periods and distribution rules must be assessed separately. Opening insolvency generally stays relevant property litigation under Article 637 and enforcement against estate assets under Article 638, subject to the stated exceptions. A supplier must normally lodge its claim within one month after registration of the opening decision under Article 685, paragraph 1. Late filing within the further two-month period in Article 688 carries disadvantages and is not an unrestricted extension. Monitoring the company register can therefore matter even while an ordinary debt case is pending.
A foreign creditor can instruct a Bulgarian attorney and pursue its claim without forming a local company merely for litigation. The authority to sue must come from the actual creditor or its authorised representative. A collection agency’s commercial appointment does not itself make it the owner of the debt.
Court representation by an authorised lawyer is permitted by Article 32, item 1, ГПК, with a signed power under Article 33. Settlement, withdrawal and receipt of money require express authority under Article 34, paragraph 3. The foreign company should supply current evidence of its representative and ensure someone monitors service. Missing a procedural communication can lose an opportunity despite continued emails with the debtor.
Electronic filing is now a material practical requirement. Merchants and applicants represented by lawyers fall within the mandatory electronic filing rule in Article 410(5) of ГПК, effective since July 2025. The application goes through the Unified e-Justice Portal. This requirement matters because an outdated paper-based procedure can create avoidable delay. It does not change the substantive burden of proving the debt if the dispute becomes contested. Accurate electronic particulars and reliable service remain as important as the underlying contract, especially where a debtor has changed its registered office or uses several trading names.
Time affects the claim independently of the debtor’s willingness to discuss it. Limitation is regulated by ЗЗД. The general Bulgarian period in Article 110 is five years where no other period applies. The applicable period must be identified for each obligation instead of assigning one date to every amount included in a demand.
Principal, interest and contractual penalties may not share the same limitation period. Interest and other periodic payments fall within Article 111(c) of ЗЗД, while contractual damages and penalties are addressed by Article 111(b). The starting point generally follows maturity under Article 114, with specific statutory qualifications. Repeated invoices do not necessarily mean that every underlying claim is a periodic payment. Separate completed sales can create separate obligations. Classification must follow the legal relationship, and the creditor should preserve the chronology of maturity, acknowledgments, proceedings and enforcement acts for each component of the claim.
A payment reminder does not by itself interrupt limitation. A debtor’s acknowledgment can have that effect under Article 116(a) of ЗЗД, but the wording and context must identify the obligation sufficiently. A message saying only that the parties should meet is different from an authorised statement admitting a specified unpaid balance. Judicial proceedings and enforcement have their own rules under Article 116. Where litigation follows a payment order, compliance with the Article 415 deadline is therefore part of preserving the procedural benefit of the original application rather than a mere administrative formality.
Security can make a realistic instalment arrangement worth more than a favourable judgment against an empty company. A useful settlement identifies the admitted debt, preserves appropriate security and sets dates and default consequences. It should not release the existing claim before the promised protection exists.
A settlement should address why earlier promises were not kept. If the problem is temporary cash flow, realistic instalments with identified payment dates may preserve a viable commercial relationship. If the debtor is transferring assets or denying its contractual identity, a new promise without security may merely consume time. The agreement should state the admitted principal, treatment of interest and costs, allocation of each payment, and the consequences of missing an instalment. Ambiguous wording can later produce a second dispute about whether the creditor waived the balance or only postponed collection.
The form of the agreement can change the available remedy. A qualifying contract with notarised signatures establishing a payment obligation can fall within Article 417(1), item 3, of ГПК. Immediate enforcement nevertheless depends on the requirements of Article 418, including the document’s external regularity and the obligation it establishes. A clause making payment conditional on another event must be capable of being supported in the required manner. Simply adding a notarial certification to an unclear commercial settlement does not guarantee that every later calculation will be enforceable without a contested claim.
The company number, contracting documents and authority of the signatory matter more than a common brand. A group company is not liable merely because its director negotiated the order or its warehouse received the goods. A distinct guarantee, accession to debt or other legal basis must be established.
The debtor’s identity requires the same precision. A trading name, project name or common email domain does not make several companies jointly liable. For a commercial sale, Article 327(1) of ТЗ locates the price obligation with the buyer. The Bulgarian contract, representation and subsequent conduct show which legal person bought the goods and whether anyone else undertook responsibility.
An employee’s involvement does not necessarily defeat the transaction. Where someone acts for a merchant without authority, Article 301 of ТЗ can treat the merchant as confirming the act if it does not oppose it immediately after learning of it. The relevant facts therefore include what management knew, when it knew it and how the business then behaved. The rule is not a licence to attribute every unofficial email to a company. A creditor relying on confirmation must connect the conduct to knowledge of the particular transaction and address evidence of an immediate objection if one exists.
The court establishes disputed rights and may grant interim protection. The enforcement officer implements an enforceable title against assets within the relevant territorial competence under Article 427 ГПК. A creditor asking only for another demand letter may lose time where the next necessary step is a claim, an application for security or an enforcement request.
An ordinary lawsuit against a Bulgarian company normally engages its seat under Article 108 ГПК, with the competent court level determined under Articles 103 and 104. A valid international choice-of-court clause or another applicable international rule can change that route. Before filing, separate the place where the claim may be decided from the place where assets can be attached. Insolvency claims instead go to the insolvency court within their own procedure.
Actual enforcement activity matters for limitation. Interpretative Decision No. 2 of 26 June 2015, interpretative case No. 2/2013, of the Supreme Court of Cassation’s General Assembly of Civil and Commercial Colleges distinguishes measures such as attachment or sale from opening the file, inviting voluntary payment and researching assets. The latter steps do not themselves have the same interruptive effect. The creditor should retain dated requests, orders and records of acts carried out. A file that remains administratively open can still leave a material limitation issue if no legally relevant act occurs.
Termination after two years without a requested enforcement act under Article 433(1), item 8, of ГПК must be distinguished from limitation of the underlying claim. Interpretative Decision No. 2 of 4 July 2024, interpretative case No. 2/2023, of the same General Assembly confirms that an enforcement act can interrupt limitation even where the file has already terminated through inactivity. That rule does not justify passivity. It requires a chronological assessment of what happened and when. Historic cases can also involve transitional questions, so the mere age of a file cannot establish either enforceability or extinction.
Foreign documents should show the creditor’s identity, authority to sign and the commercial chain without changing names or company numbers in translation. An accurate Bulgarian translation is required for foreign-language evidence under Article 185 ГПК. Electronic originals and full message chains should be retained when authenticity or receipt may be disputed.
A foreign judgment requires the recognition and enforcement regime applicable to its state of origin; it should not be re-labelled as a Bulgarian invoice claim. Conversely, a Bulgarian title does not give a Bulgarian enforcement officer worldwide authority. If the debtor’s only useful assets are abroad, the recognition route and local enforcement costs belong in the recovery assessment before the creditor commits to a domestic proceeding.
The measures must remain proportionate under Article 442a of ГПК. A debtor may propose a different asset or method under Article 443 if it can satisfy the creditor. This is not a general entitlement to avoid enforcement by offering an unusable asset. The alternative must be realistically capable of payment. Conversely, pursuing several valuable assets for a small balance without considering existing security can create a proportionality issue. The amount outstanding, the reliability of the asset, the debtor’s conduct and the risk of nonpayment all form part of the assessment.
Compare the related procedures in this category, including their requirements and the stage at which you need them.
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