Bulgaria Company Formation: EU Access with 10% Flat Corporate Tax

Panoramica della giurisdizione

Bulgaria's position as the European Union's lowest-tax jurisdiction—combined with full Single Market access, NATO membership, and a decade-long currency board pegging the lev (BGN) to the euro—renders it strategically relevant for international founders seeking cost-efficient EU substance. The Bulgarian company register, maintained electronically by the Registry Agency, offers transparent UBO disclosure (since 2018 transposition of the Fourth Anti-Money Laundering Directive) and real-time incorporation filing.

Company registration in Bulgaria requires minimal share capital—BGN 2 (≈€1) for an EOOD, BGN 2,000 (≈€1,000) for an OOD—materially lower than German GmbH (€25,000), Dutch BV (€0.01 but notarial costs), or UK LLP alternatives when factoring total setup expenses. The Bulgarian company registration process mandates a local registered address, obtainable via virtual office providers for €200–400 annually, though HMRC and IRS scrutinise such arrangements for substance deficiencies.

For starting a business in Bulgaria as a foreigner, no residency, local director, or in-country shareholder is required. Non-EU founders may incorporate an EOOD or OOD using notarised and apostilled documentation; the company formation Bulgaria timeline extends by 3–5 business days for document legalisation. Bulgaria's 71 tax treaties—including the UK (2015 protocol), US (2007), UAE (2018), and Hong Kong (2017)—provide withholding tax relief: typically 5% on dividends (10%+ shareholding), 5% on interest, and 5–10% on royalties, contingent on beneficial ownership and principal-purpose tests under MLI Article 7.

The jurisdiction's appeal centres on low-cost EU operations: average Sofia office rent (€8–12/m² monthly), developer salaries (€18,000–30,000 gross annually), and corporate compliance (€1,800–2,500 yearly for trading entities under €500,000 turnover). However, founders subject to UK CFC Chapter 5 (non-trading finance income), US Subpart F (passive FPHCI), or OECD Pillar Two (€750 million group threshold, effective 2024 in Bulgaria) must model substance requirements and potential top-up taxes before company registration in Bulgaria commitments.

Tipologie societarie disponibili

OOD (Дружество с ограничена отговорност)

The OOD (limited liability company) is Bulgaria's standard corporate vehicle for multi-member trading, services, and operational entities. Minimum share capital: BGN 2,000 (≈€1,000), divisible into shares of at least BGN 10 each. Bulgaria company registration for an OOD permits 1–50 shareholders (natural or legal persons, any nationality). No minimum director count; a sole director (who may be non-resident and non-EU) suffices, though appointing a Bulgarian tax resident director enhances substance for CFC/treaty purposes. OOD incorporation requires notarised memorandum and articles of association, UBO declaration (beneficial owners ≥25% equity or control), and Commercial Register filing. Timeline: 7 business days; cost from €1,800 all-inclusive. The OOD is taxed as a resident entity (10% CIT on worldwide income if tax-resident in Bulgaria; place of effective management test applies).

Key compliance: Annual financial statements filed within six months of year-end; statutory audit mandatory if two of three thresholds met (€2 million revenue, €2 million assets, 50 employees). VAT registration required at BGN 100,000 (≈€51,000) turnover. For UK-resident controlling shareholders, HMRC applies CFC rules if the OOD lacks genuine Bulgarian establishment and performs finance/IP functions; US persons face Form 5471 and potential GILTI inclusions.

EOOD (Еднолично дружество с ограничена отговорност)

The EOOD (single-member limited liability company) mirrors the OOD structure but permits only one shareholder—ideal for solo founders or wholly owned subsidiaries. Minimum capital: BGN 2 (≈€1), the EU's lowest nominal requirement. Company formation in Bulgaria via EOOD completes identically (7 days, remote-capable), with reduced incorporation fees (≈€1,500–1,800). The sole shareholder exercises supreme decision-making authority; no general meeting formalities required. A sole director (resident or non-resident) manages day-to-day operations.

Substance considerations: Single-member structures attract heightened scrutiny under BEPS Action 5 (harmful tax practices) and EU ATAD. UK HMRC's 2019 CFC guidance flags EEODs with non-resident directors and minimal economic functions. US founders should note that EEODs are disregarded entities for federal tax unless a check-the-box election designates corporate classification; absent election, income flows to Form 1040 Schedule C (self-employment tax applies). Bulgarian tax residency requires effective management in Bulgaria: board meetings, bank account activity, supplier/client contracts evidencing genuine trade.

AD (Акционерно дружество)

The AD (joint-stock company) suits larger ventures, capital raises, or stock-exchange listings. Minimum capital: BGN 50,000 (≈€25,000) for private AD; BGN 500,000 (≈€255,000) for public AD. Shares freely transferable unless articles restrict. Mandatory two-tier board (management board + supervisory board) or single board of directors (minimum three members). Incorporation timeline: 14–21 business days; cost from €4,500. The AD structure is rare among international founders due to capital and governance burdens; OOD/EOOD suffice for 98% of non-listed use cases. Bulgaria company formation for ADs is reserved for institutional investors, family offices, or regulated-activity licensees (insurance, banking, investment intermediation).

Tassazione e regime fiscale

Corporate Income Tax (CIT)

Bulgaria levies a 10% flat corporate income tax on worldwide profits of tax-resident entities—the EU's lowest headline rate, unchanged since 2008. Tax residency arises where the company's place of effective management is located (board meetings, strategic decisions, central administration). Company registration Bulgaria alone does not confer tax residency; substance—Bulgarian-resident director(s), local employees, office lease, and economic activity—is determinative. Non-resident companies are taxed only on Bulgarian-source income (branch profits, immovable property, permanent establishment).

Participation exemption: Dividends received from qualifying subsidiaries (≥10% voting rights held continuously for ≥12 months; subsidiary resident in EU/EEA or treaty state) are exempt from Bulgarian CIT, provided the subsidiary is subject to tax analogous to Bulgarian CIT. Capital gains on disposal of such participations are similarly exempt. Thin-capitalisation rules limit interest deductions: debt-to-equity ratio exceeding 3:1 triggers disallowance of excess interest unless arm's-length pricing demonstrated.

Loss carryforward: Indefinite, but annual utilisation capped at 70% of current-year taxable profit (effective 2023). No carryback permitted. R&D expenditure qualifies for 100% deduction in the year incurred; no patent-box or super-deduction regimes exist.

Withholding Taxes (WHT)

Bulgarian domestic law imposes 5% WHT on dividends, interest, and royalties paid to non-residents. Treaty relief typically reduces this to 0–5% (dividends to ≥10% corporate shareholders under EU Parent-Subsidiary Directive or treaties) and 0–5% for interest/royalties under most DTTs. The Bulgaria company formation treaty network includes:

• UK: 5% dividend WHT (10%+ holding), 5% interest, 5% royalties (2015 protocol; MLI applies).
• US: 10% dividends (2007 treaty; no portfolio exemption), 5% interest, 5% royalties. US persons must file Form 1116 (foreign tax credit); treaty benefits denied if principal purpose is tax avoidance (LOB + PPT under MLI).
• UAE: 5% dividends (10%+ holding), 0% interest (government/central bank), 5% royalties (2018 treaty).
• Singapore: 5% dividends, 5% interest, 5% royalties (2015 treaty).
• Cyprus: 5% dividends, 0% interest (EU Interest-Royalties Directive), 0% royalties (Directive; 5% otherwise).

EU-resident parent companies holding ≥10% for ≥12 months qualify for 0% WHT under the Parent-Subsidiary Directive, subject to anti-abuse (beneficial ownership, genuine economic activity). ATAD General Anti-Abuse Rule (GAAR) permits Bulgaria to deny treaty benefits if the principal purpose is tax advantage.

Value Added Tax (VAT)

Bulgaria applies 20% standard VAT (9% reduced for accommodation) under EU VAT Directive 2006/112/EC. Mandatory registration at BGN 100,000 (≈€51,000) annual turnover; voluntary registration permitted below threshold. Intra-EU supplies to VAT-registered customers are zero-rated (reverse charge); exports outside the EU are zero-rated. Input VAT on business expenses is fully recoverable (monthly or quarterly returns).

Distance selling: From July 2021, the €10,000 EU-wide threshold triggers VAT registration obligations in buyer jurisdictions or OSS (One-Stop-Shop) filing. Bulgarian entities selling digital services B2C across the EU may file via Bulgarian OSS portal.

Dividend Distribution Tax (DDT)

Bulgaria imposes 5% DDT on dividends distributed by Bulgarian companies to resident individuals (withheld at source). Corporate shareholders (resident or non-resident qualifying under treaty/directive) typically face 0–5% WHT as above. For Bulgaria residency by company formation seekers, individual shareholders receiving dividends declare them on annual tax returns; the 5% DDT is creditable against personal income tax liability (if applicable). High-net-worth founders often interpose an EU holding company (Cyprus, Malta, Netherlands) to achieve 0% WHT and defer personal taxation.

US and UK Founder Implications

US persons: Bulgarian OOD/EOOD classified as foreign corporations trigger Form 5471 (Category 4/5 filer if ≥10% ownership). Subpart F income (passive FPHCI: interest, dividends, rents, royalties >75% gross) is taxable currently on Form 1040, bypassing deferral. GILTI (Global Intangible Low-Taxed Income) applies to non-Subpart F active income if effective foreign tax rate <13.125% (2023); Bulgaria's 10% CIT often triggers GILTI inclusion, partially offset by §250 deduction and FTC under §960. PFIC rules may apply if passive income >75% or passive assets >50%; QEF election mitigates punitive taxation. FATCA reporting (Form 8938, FinCEN 114) mandatory if aggregate foreign financial accounts/assets exceed thresholds.

UK persons: CFC rules (TIOPA 2010 Part 9A) apply if the Bulgarian company is controlled by UK residents and fails the exempt-territories or low-profits (≤£500,000 accounting profits, ≤£50,000 non-trading income) gateways. The entity-level exemption (Chapter 9) requires genuine establishment in Bulgaria (fixed place of business, employees, independent transactions). IP-holding or treasury EEODs with UK-resident directors presumptively fail and suffer CFC charge (taxed at UK 25% on attributed profits). Post-6 April 2025, remittance basis is abolished for new UK arrivals; worldwide income (including Bulgarian dividends) taxed currently. UK-resident directors of Bulgarian companies must disclose on SA106 (Foreign); NIC Class 2/4 may apply if self-employed.

OECD BEPS and Pillar Two

Bulgaria transposed EU ATAD (2019): interest limitation (30% EBITDA or €3 million safe harbour), exit taxation, CFC rules (though rarely enforced domestically), and hybrid mismatch rules. Pillar Two (Directive 2022/2523) applies from 2024 to Bulgarian groups with consolidated revenue ≥€750 million: the Income Inclusion Rule (IIR) and Undertaxed Profits Rule (UTPR) impose top-up tax to achieve 15% effective rate. Founders operating sub-scale groups (<€750 million) remain outside scope. Bulgarian legislative implementation (published March 2024) confirms IIR/UTPR application from tax year 2024; transitional safe harbours available until 2026.

Bulgaria offers one of the most cost-efficient structures in the EU for founders seeking a 10% corporate tax environment with full Single Market access. The OOD (limited liability company) is the standard vehicle, requiring a minimum share capital of BGN 2 (approximately €1), though most advisers recommend at least €1,000 for banking purposes. Initial formation costs remain modest compared to Western European jurisdictions, typically ranging from €1,800 to €3,200 depending on notarisation requirements and whether you engage a local director. Annual compliance costs are predictable and low, though quality accounting is essential to navigate VAT (20% standard rate), social security for directors (minimum €350/month if locally employed), and transfer-pricing documentation for cross-border transactions exceeding €500,000 annually. Banking can be completed remotely with tier-two European institutions, though expect €300–800 in introduction fees. All figures exclude translation and apostille costs for non-EU documents.

Bulgarian company formation is straightforward and can be completed in as few as seven business days if all documents are prepared in advance. The process requires notarised deeds, submission to the Commercial Register via the Registry Agency, and parallel tax/VAT registration with the National Revenue Agency (NRA). Non-resident founders must apostille identity documents and provide proof of address; if no local director is appointed, you may appoint a nominee or travel to Bulgaria for notarisation. Below is the standard timeline for a single-shareholder OOD with one director.

Bulgaria is an EU member state and therefore subject to the Anti-Tax Avoidance Directive (ATAD), the Parent–Subsidiary Directive, and automatic exchange of information under DAC6 and CRS. A Bulgarian OOD with no local staff, office, or activity will be challenged under both Bulgarian domestic law (PPT in DTAs) and the residence-state rules of non-resident shareholders.

For UK founders, post-April 2025 remittance-basis changes mean that a Bulgarian holding company or IP box structure must demonstrate substance to avoid UK CFC attribution under TIOPA 2010 Part 9A. HMRC applies a multi-factor test: where are contracts negotiated, where do directors meet, where are servers/IP managed? A Sofia virtual office and offshore director will not suffice. Minimum credible substance: part-time employee (15–20 hrs/week), co-working desk, and quarterly board meetings in Bulgaria. Cost: ~€12,000–18,000 annually.

For US founders, a Bulgarian entity is a per-se corporation and subject to Subpart F (passive income attribution) and GILTI (>10% shareholding). The 10% headline rate is attractive, but tested income is grossed up under §78 and §250 deduction phases down, resulting in an effective US rate of ~13–16% on active profits. PFIC rules apply if the OOD holds investments; file Form 5471 annually. CFCs holding IP must document arm's-length royalty rates under §482. FATCA reporting applies; most Bulgarian banks are participating FFIs.

Transfer pricing: any intra-group charges (management fees, royalties, cost-plus arrangements) must be documented under OECD guidelines. Bulgarian tax authority (NRA) requests TP documentation for transactions >BGN 1m (~€500k) or if losses persist beyond two years. Penalty for missing documentation: 10% of undocumented amount.

OECD Pillar Two: Bulgaria's 10% rate falls below the 15% minimum. If your consolidated group revenue exceeds €750m, top-up tax will apply either in Bulgaria (via a qualified domestic minimum top-up tax, expected 2025) or in the parent jurisdiction. Below this threshold, Pillar Two does not apply.

Practical recommendation: Bulgaria works well for founders with genuine CEE operations—software development teams in Sofia, customer support, logistics hubs. It is not a booking centre for IP or holding structure unless you commit to hire at least one FTE, maintain a physical office, and hold substantive board meetings locally. For pure holding, consider Malta, Cyprus, or Luxembourg, which offer participation exemption regimes and better DTA networks.

Local commercial banks such as UniCredit Bulbank, DSK Bank, and First Investment Bank offer corporate accounts to newly formed Bulgarian entities, typically requiring in-person KYC or notarised apostilled documents if the director appears remotely. Opening timelines range from two to four weeks once the company is registered in the Commercial Register; directors must provide passport, proof of address dated within three months, company charter, and beneficial ownership declaration under the EU Fifth Anti-Money Laundering Directive (5AMLD). Minimum deposits are nominal—often €500–€1,000—though certain banks impose higher balances (€5,000+) for non-resident directors or holding structures.

EMIs and challenger banks—Wise Business, Revolut Business, Paysera—accept Bulgarian EООDs and OODs without physical branch visits, delivering IBAN provisioning in days. These platforms suit trading and consultancy clients invoicing EU or UK counterparties; they do not support cash deposits and may freeze accounts if turnover patterns trigger AML algorithms. For crypto-related or high-volume payment-processing activities, local banks often decline mandates; founders route treasury through Baltic or Swiss institutions that accept Bulgarian entities with enhanced due diligence.

Multi-currency and offshore alternatives: Bulgarian banks typically offer EUR and BGN (pegged 1.95583 to the euro) accounts by default; USD accounts incur FX spreads of 1–2 per cent. Clients requiring segregated client-money accounts—fund managers, escrow agents—may incorporate alongside a Cyprus or Malta subsidiary and open the operational account there, booking the Bulgarian entity as a nominee director. UK founders on remittance basis (until April 2025) or new deemed-domicile rules must ensure that dividends distributed to personal UK accounts do not trigger immediate income-tax charges; deferring distributions or routing via a non-UK holding may preserve planning. US founders face FATCA reporting from Bulgarian banks and must file FinCEN Form 114 (FBAR) if aggregate foreign account balances exceed $10,000 at any point during the year.

Bulgaria suits EU-based traders, SaaS founders, and service exporters seeking 10 per cent headline corporate tax, intra-Community VAT triangulation, and access to the EU Single Market without the cost base of Western Europe. The 5 per cent dividend withholding—reduced to zero under most bilateral treaties—and flat 10 per cent personal income tax make it attractive for owner-managed consultancies planning to extract profits as salary or dividends. Compliance burden remains manageable: annual audited accounts for OODs above €300,000 turnover, simplified statements for smaller EООDs, and monthly VAT returns if registered.

Digital-nomad entrepreneurs and location-independent consultants appreciate the straightforward residency-by-employment pathway: a Bulgarian EОOD can employ its foreign founder, sponsor a Type-D long-stay visa, and, after twelve months' legal residence, support permanent-residence applications. Pairing the company with personal tax residence delivers flat 10 per cent income tax and exemption from social security on dividends (only salary incurs ~32 per cent employer/employee contributions). Holding structures benefit from the participation-exemption regime: dividends and capital gains from qualifying subsidiaries (≥10 per cent, held ≥12 months) are exempt from Bulgarian tax, mirroring the EU Parent–Subsidiary Directive; this positions Bulgaria as a lower-cost alternative to Cyprus or the Netherlands for founders consolidating portfolio investments or exiting via share sale.

The jurisdiction appeals to cost-conscious founders prioritising operational efficiency over prestige; Sofia and Plovdiv offer skilled developers and multilingual staff at 40–60 per cent of Western European salary benchmarks, enabling Bulgarian entities to function as genuine trading hubs rather than brass-plate vehicles.

Avoid Bulgaria if client perception and brand equity are critical; procurement departments at FTSE or DAX corporates occasionally apply heightened due diligence to invoices from Balkan jurisdictions, delaying payment cycles or demanding parent-company guarantees. Institutional fundraising is impractical: venture-capital funds and US angel syndicates expect Delaware C-corps or English Ltds with familiar governance; flipping a Bulgarian EОOD into a Delaware holding post-seed round incurs legal and tax friction.

US founders face punitive treatment if the Bulgarian entity qualifies as a controlled foreign corporation under Subpart F; passive income (royalties, interest, certain services) is immediately taxable in the US at ordinary rates, eliminating deferral benefits. Even active business income triggers GILTI (Global Intangible Low-Taxed Income) inclusion if the effective foreign rate falls below 13.125 per cent (18.9 per cent post-2025)—Bulgaria's 10 per cent headline rate ensures most structures pay top-up US tax. PFIC rules punish founders holding a Bulgarian entity as a passive investment vehicle; gain on sale or deemed-dividend distributions attract interest charges and excess-distribution penalties. Compliance—Forms 5471, 8992, 8993, FBAR—adds $5,000–$8,000 annual accounting costs.

Large-scale IP holding is better domiciled in jurisdictions with robust patent-box regimes (UK, Netherlands, Switzerland); Bulgaria offers no equivalent, and the CFC rules of Western European parents may recharacterise passive royalty income. Finally, founders requiring immediate banking for high-risk sectors—crypto exchanges, forex brokers, adult content—will struggle; local banks decline these mandates, and EMI alternatives impose restrictive transaction limits.

Bulgaria enters 2026 with no immediate change to its 10 per cent corporate-tax rate, preserving its position as the EU's lowest headline jurisdiction. The government has not signalled adoption of OECD Pillar Two top-up taxes beyond the mandatory Income Inclusion Rule (IIR) and Undertaxed Profits Rule (UTPR) that apply to multinational groups with consolidated revenue ≥€750 million; micro and small enterprises—98 per cent of Bulgarian companies—remain unaffected. However, EU Anti-Tax Avoidance Directive (ATAD) interest-limitation rules now restrict deductibility to 30 per cent of EBITDA for net interest exceeding €3 million, curtailing leveraged-buyout structures and intra-group loans previously used to strip profits.

Digital-services VAT compliance tightened: non-EU businesses selling B2C digital services to Bulgarian consumers must register for VAT if turnover exceeds the €10,000 One-Stop-Shop threshold, or opt into the OSS immediately. E-invoicing remains voluntary in 2026, though draft legislation under consultation proposes mandatory structured XML invoicing for B2B transactions above €10,000 from January 2027, aligning with EU-wide ViDA (VAT in the Digital Age) reforms.

Substance requirements have hardened informally: the National Revenue Agency now cross-references Commercial Register director addresses with actual office leases and payroll filings. Brass-plate structures—no staff, no lease, nominee director—trigger transfer-pricing audits if turnover exceeds €1 million or if intra-group transactions constitute >50 per cent of revenue. The UK's Corporate Interest Restriction (CIR) and revised CFC rules (Finance Act 2025) mean UK-resident founders controlling a Bulgarian entity must demonstrate that the company passes the entity-level exemption (low-profit margin ≤ 10 per cent of relevant assets, or ≤ £500,000 chargeable profit) to avoid UK attribution of Bulgarian profits. US founders face unchanged GILTI and Subpart F exposure; no treaty relief exists for deemed income.