How to Choose the Right Legal Form for a Company in Bulgaria

Introduction

The legal form you choose for your Bulgarian company is one of the most consequential decisions in the entire business setup process — and it is one of the least reversible without cost and administrative effort. The right structure aligns your liability exposure, tax position, management flexibility, and future fundraising or exit options with how the business will actually operate. The wrong structure can create unnecessary complexity, impose obligations the business does not need, or leave the founder personally exposed.

The most common mistake made by foreign entrepreneurs registering in Bulgaria is defaulting to the first structure they encounter — typically the EOOD or OOD — without considering whether it is actually the best fit for their specific situation. In most cases, the EOOD or OOD is correct. But a business intending to raise equity capital from external investors, issue shares to employees, or list on a stock exchange needs an AD. A foreign company testing the Bulgarian market without committing to a standalone subsidiary may be better served by a branch. A company doing nothing more than market research should consider a representative office.

This guide covers every legal form available in Bulgaria, explains the practical differences between them, identifies which type of business each suits, and highlights the most common structuring mistakes that professional advice prevents. By the end, you will know exactly which form to register — and why.

Legal Forms Available in Bulgaria — Overview

Bulgarian commercial law, governed primarily by the Commercial Act (Търговски закон), provides six principal legal forms for conducting business. Each serves a different purpose, carries different liability consequences, and involves different administrative requirements.

Key Factors to Consider Before Choosing a Legal Form

Before examining each legal form in detail, there are five questions that determine which structure is appropriate. Working through these in order narrows the choice to one or two options in almost every case.

1. How Many Owners Will the Business Have?

This is the simplest and most decisive first question. The EOOD is legally restricted to a single owner (either a natural person or a legal entity). If there are two or more owners — now or anticipated in the near future — an OOD is required. Registering as an EOOD and subsequently adding a second owner requires a conversion to OOD, which involves a Registry Agency filing and associated costs. It is simpler to register correctly from the outset.

2. Is Limited Liability Required?

For virtually every foreign entrepreneur, the answer is yes. Limited liability means that the owner’s personal assets — their home, savings, and personal property — are protected from the company’s creditors. The company’s debts are the company’s debts, not the owner’s personal obligations. The EOOD, OOD, and AD all provide limited liability. The ET (sole trader) does not: an ET owner is personally liable for all business debts without limit. This single factor effectively eliminates the ET from consideration for most foreign founders.

3. What Is the Scale and Nature of the Business?

4. Do You Need to Raise External Investment or Issue Shares?

This question distinguishes between the OOD and the AD more than any other. In an OOD, ownership interests are called “shares of participation” (дялове) — they can be sold or transferred, but the Commercial Act imposes procedural requirements on transfers and gives existing partners pre-emption rights. An OOD cannot issue new shares to an investor without a formal capital increase and registry filing.

An AD issues shares (акции) that are, by default, freely transferable without partner consent. An AD can issue multiple classes of shares (ordinary, preference, voting, non-voting), raise capital through new share issuances, and in the case of a public AD, list its shares on a stock exchange. For businesses that anticipate significant external equity investment, employee share option plans, or a structured exit, the AD is the more appropriate form — despite its higher administrative requirements.

5. Is This a New Company or an Extension of an Existing Foreign Business?

If the purpose is to extend an existing foreign company’s operations into Bulgaria — rather than create a standalone Bulgarian legal entity — a branch may be more appropriate than an EOOD or OOD. A branch is not a separate legal entity; it is a Bulgarian establishment of the foreign company, operating under the foreign company’s name and subject to Bulgarian registration and tax obligations. The key distinction is liability: a branch’s obligations are the foreign parent’s obligations. For market testing without full commitment to a standalone subsidiary, a branch can be the right choice.

Legal Form Profiles — Detailed Guide

EOOD — Single-Member Limited Liability Company

The EOOD is the most widely used legal form among foreign entrepreneurs in Bulgaria. Its combination of limited liability, minimal share capital, simple management structure, and broad commercial applicability makes it the default choice for the large majority of internationally managed Bulgarian companies. A foreign company — registered in the Netherlands, the UAE, the UK, or anywhere else — can own 100% of a Bulgarian EOOD, making it an effective structure for a European subsidiary of an international group.

The EOOD has one structural limitation: it cannot have more than one owner. If a second partner joins the business, a conversion to OOD is required. For businesses where co-ownership is anticipated, registering as an OOD from the outset avoids this conversion step.

OOD — Multi-Member Limited Liability Company

The OOD and EOOD are governed by the same chapter of the Commercial Act and are functionally almost identical — the primary difference is the number of owners. An OOD’s Articles of Association must include provisions governing the rights of multiple partners: how decisions are made, how profits are distributed, what happens if a partner wishes to exit, and how disputes between partners are resolved.

AD — Joint Stock Company

The AD is not the right choice for most foreign entrepreneurs registering a Bulgarian company. Its higher share capital requirement, more complex governance structure, and mandatory audit obligations create administrative overhead that is not justified unless the business specifically requires share issuance, capital raising from multiple investors, or operation in a regulated sector that mandates the AD form.

Where the AD becomes the right choice: a technology startup that plans to raise venture capital from institutional investors and issue share options to employees; a Bulgarian entity that will be the vehicle for a private equity fund’s investment; a regulated financial services business whose licence requires the AD form; or a company planning to list on the Bulgarian Stock Exchange.

Branch of a Foreign Company

The branch is most appropriate when the foreign company wants to establish a Bulgarian operational presence that is formally and legally integrated with the parent, rather than a separate subsidiary. This might apply to an international company opening a Bulgarian service centre that will invoice clients from the parent’s books, or a foreign law firm or professional services provider establishing a Bulgarian office under the same brand and liability umbrella.

The critical consideration is liability: every obligation incurred by a branch — lease agreements, employment contracts, supplier contracts, tax liabilities — is an obligation of the foreign parent company. If the Bulgarian operations fail or generate liabilities, those liabilities flow directly to the parent. This is the reason most foreign entrepreneurs prefer an EOOD or OOD subsidiary: the Bulgarian company’s debts remain the Bulgarian company’s debts.

Representative Office

The representative office is a frequently misunderstood legal form. It is not a way to “test” commercial activity in Bulgaria with lower commitment — it is a registration for entities that will have no commercial activity at all. Any company that issues even a single invoice in Bulgaria or signs a commercial contract in its own name has exceeded the permitted scope of a representative office and is at risk of tax and regulatory penalties.

For genuine pre-entry market research or liaison functions, the representative office is efficient. For any business with commercial intent, even at the smallest scale, the EOOD or OOD is the correct form from day one.

ET — Sole Trader (Едноличен търговец)

Which Legal Form Is Best for a Foreign Entrepreneur?

The practical answer for the overwhelming majority of foreign entrepreneurs is either the EOOD or the OOD. The following framework makes the choice clear in every common scenario.

Common Structuring Mistakes and How to Avoid Them

Bulgaria For Business has assisted hundreds of foreign entrepreneurs with company registration. The same structuring errors appear repeatedly — and all of them are preventable with professional advice before registration.

Registering an AD Without Genuine Need

The AD’s higher capital requirement (€25,000 minimum), mandatory governance structure, and administrative overhead are justified only when the business specifically requires share issuance to multiple investors, employee share option plans, or operation in a regulated sector that mandates the AD form. Many founders choose the AD because it “sounds more professional” or because they are familiar with equivalent forms in their home country. In practice, an OOD managed by experienced directors with a well-drafted Shareholders’ Agreement is equally credible and substantially easier to administer.

Using a Representative Office for Commercial Activity

The representative office is a registration category for non-commercial activities only. Companies that register a representative office and then begin issuing invoices, signing contracts, or receiving payments have exceeded its permitted scope. Bulgarian tax authorities can assess corporate income tax and VAT on the commercial activity — plus penalties for the period of unauthorised trading — dating back to the first commercial transaction. If there is any possibility that the Bulgarian presence will generate revenue, an EOOD or OOD is the correct structure from day one.

Choosing a Branch Instead of a Subsidiary

The branch appears attractive because it avoids creating a new legal entity. The liability consequence — that every branch obligation is the parent company’s obligation — is sometimes overlooked. For a company with a functioning Bulgarian operation that has lease obligations, employees, and supplier contracts, the exposure created by branch liability can be significant. An EOOD subsidiary, owned 100% by the foreign parent, provides identical commercial functionality with complete liability separation.

No Shareholders’ Agreement for an OOD with Multiple Partners

An OOD’s Articles of Association address the statutory minimum: ownership percentages, director appointment, and voting thresholds. They do not typically address what happens when partners disagree fundamentally, when one partner wishes to exit, when performance falls short of expectations, or when the company receives an acquisition offer. A Shareholders’ Agreement prepared at the time of registration — when all parties are cooperative and motivated — defines these outcomes in advance. Negotiating them retrospectively, when a dispute has already arisen, is far more expensive and far less likely to produce a satisfactory result.

Failing to Consider Future Capital Requirements

An entrepreneur who registers an EOOD or OOD and later needs to bring in institutional investors, issue employee share options, or raise debt through bond issuance will need to either convert to an AD or restructure. Conversion is possible but involves cost, administrative effort, and a period during which the company’s registry entry reflects the conversion process. For businesses with a clear path to institutional funding, building the AD structure from the outset avoids this disruption.