Relocating to Bulgaria Before Selling Your Company: Founder Exit Guide (2026)

A European founder selling a company for EUR 5 million can pay anywhere between EUR 0 and EUR 2.35 million in tax, depending on where they are tax resident on the closing date — and on what they did 6, 12, or 24 months before that date. Bulgaria sits at the low end of that band: 10% flat on private share sales, 0% on disposals of listed EU/EEA securities under Art. 13(1)(3) ЗДДФЛ, and no domestic exit tax for a Bulgarian resident selling later. The problem is the departure country. Germany, the Netherlands, Belgium, France, and Italy all have mechanisms that tax unrealised gains on emigration, deferred until a future event or triggered outright at the border.

This guide is written for founders preparing for a liquidity event — trade sale, private-equity buyout, secondary, IPO, or a planned share buy-back. It covers the exit-tax rules in six of the most common departure countries (Germany, the Netherlands, Belgium, France, the United Kingdom, and Italy), how the Bulgarian tax regime receives you on arrival, and the sequencing questions that decide whether the plan works or costs you seven figures.

Every rule below is cross-referenced against the relevant statute and the 2025-2026 legislative state. None of it is a substitute for personal advice. The whole point of this article is that the planning must be specific: we cannot fact-check your cap table, your articles, or your SPA covenants from a blog post.

Why the Timing of Residence Determines the Tax Bill

Most tax systems tax founders on two axes at once. The departure country wants to tax the gain accrued while you were its resident. The arrival country wants to tax the gain realised after you became its resident. If the two countries agree on how to split that (through a treaty or an exit-tax mechanism), you pay once. If they disagree, you pay twice. If you plan it badly, you can pay twice in two different currencies on two different calendars, with interest and penalties.

There are four mechanisms in play:

1. Exit tax at emigration — the departure country taxes the unrealised capital gain on the day you cease to be a resident. Germany, France, the Netherlands, and (from 2025) Belgium apply this to founders with qualifying shareholdings.
2. Temporary non-residence clawback — the departure country lets you leave, but if you return within a defined period (usually 5 years for the UK, varying elsewhere), any gain realised while you were away is retroactively taxed as if you had never left.
3. Arrival-country tax — once you are a Bulgarian tax resident, Bulgaria taxes any post-arrival gain. For most founders, the Bulgarian headline is 10% flat, and for listed EU/EEA shares it is 0%.
4. Treaty tie-breaker — when both countries claim residence, the double-tax treaty assigns you to one of them through a sequence of tests: permanent home, centre of vital interests, habitual abode, and nationality. This is not a magic shield: the tests reward actual physical relocation, not paperwork.

Germany — §6 AStG Wegzugsbesteuerung

The German exit tax (Wegzugsbesteuerung) under Section 6 of the Foreign Tax Act is the harshest of the six regimes covered here. It applies automatically when:

• the individual has been subject to unlimited German tax liability for at least 7 out of the last 12 years, and
• at the moment of emigration, the individual holds at least 1% of the shares in a corporation — German or foreign, direct or indirect.

Germany then treats the emigration as a deemed sale at fair market value on the day of departure. The unrealised gain (FMV minus acquisition cost) becomes immediately taxable. Under the partial-income procedure (Teileinkünfteverfahren), 60% of the gain is subject to the founder's marginal German rate — which, combined with the solidarity surcharge, can push the effective burden up to roughly 28-29% of the full gain.

For an EU/EEA relocation (including Bulgaria since accession), §6(5) AStG offers a deferral regime. In its post-2022 version the deferral is no longer automatic and in principle the tax becomes due within a short window after emigration, payable in up to seven annual instalments on application, subject to security requirements. If the founder returns to Germany within seven years (with a one-time extension of up to five years on application) and continues to hold the shares, the exit-tax assessment can be cancelled.

The Netherlands — Conserverende Aanslag on Box 2

The Dutch exit tax applies to holders of a substantial interest (aanmerkelijk belang) — at least 5% of shares, profit-sharing rights, certificates, or voting rights in a company. On the day Dutch residency ends, the Belastingdienst issues a conserverende aanslag (protective assessment) based on the unrealised gain at fair market value.

Box 2 rates for 2025 are:

• 24.5% on the first EUR 67,804 of the Box 2 gain;
• 31% on the excess.

For a founder with a EUR 5 million unrealised gain, that translates into a Dutch exit-tax exposure around EUR 1.55 million at current rates. Relocation within the EU/EEA (including Bulgaria) unlocks deferral, typically in up to 10 annual instalments, with the authority generally requiring security (bank guarantee, mortgage, or equivalent).

The protective assessment is not always paid in full. Historically, it could be reduced or waived in defined scenarios — but the rules have tightened in recent years, and a founder cannot rely on a silent expiration. The planning question is usually not "how to avoid the assessment" but "how to minimise interest, security costs, and double taxation on the eventual realisation".

Belgium — 2025 Program Law and the New 2026 Capital Gains Tax

Belgium has historically been one of the most founder-friendly jurisdictions in Europe because of its long-standing absence of capital gains tax on financial assets held by individuals outside of any professional activity. That is changing.

• Program Law of 18 July 2025. Introduces an exit-tax framework when a Belgian company transfers its seat abroad or engages in outbound cross-border reorganisations (mergers, demergers, etc.) — shareholders are deemed to receive a taxable liquidation dividend even if no actual distribution takes place.
• New 10% capital gains tax on financial assets from 2026. Gains realised up to 31 December 2025 remain tax-free under the historical regime; realisations from 2026 onwards fall inside the new regime, with certain thresholds and carve-outs still being refined in secondary legislation.

For a Belgian founder considering Bulgaria, the sequencing is decisive. Pre-2026 realisations may still benefit from the traditional regime. Post-2026 realisations and structural moves (seat transfer, reorganisation) attract the new rules. A relocation to Bulgaria before a seat transfer or before a 2026+ realisation must be planned carefully, with specific attention to the 24-month deferral mechanism for cross-border moves and the interaction with double-tax treaties.

France — Article 167 bis CGI

Article 167 bis of the French Code général des impôts is the French exit tax. It applies when a French tax resident transfers residence abroad if:

• the taxpayer has been French tax resident for at least 6 out of the last 10 years, and
• on the day of the transfer, the taxpayer owns (directly or indirectly with their tax household) either at least 50% of a company's profits or securities representing a total value of more than EUR 800,000.

The unrealised gain is taxed at the ordinary flat rate on capital gains (PFU, 30% including social contributions, plus any high-income surcharge) on the day of departure. Deferral is possible, typically against a bank guarantee covering the tax plus a buffer, for up to five years (or longer in defined EU/EEA scenarios). If the taxpayer returns to France within the statutory period and still holds the shares, the exit-tax assessment can be cancelled.

For a French founder selling a SAS at EUR 5 million, exposure under Article 167 bis can reach the 30% PFU level on the gain computed at departure. A Bulgarian relocation two to three years before the sale — with proper evidence of real centre of vital interests in Bulgaria and deferred payment under the Article 167 bis mechanism — is the standard play. It is not a shortcut. It is a multi-year file.

United Kingdom — No Standalone Exit Tax, But the 5-Year Trap

The UK does not impose a standalone exit tax on non-UK-situated shares when an individual ceases UK tax residency. The system relies on two different mechanisms:

• Statutory Residence Test (SRT): whether you actually become non-UK resident in the tax year of departure depends on the SRT and (often) a split-year treatment. Do not assume day-count is enough.
• Temporary non-residence rule: if you were UK tax resident for at least 4 of the 7 tax years before departure and you become UK resident again within 5 years, gains realised while you were abroad are retroactively taxed as though you had never left. Only founders who remain non-UK resident for at least 5 complete UK tax years before returning are safe from the clawback.

For founders planning a Bulgarian relocation before a UK company sale, the plan is typically: (a) break UK residence cleanly under the SRT, (b) establish genuine Bulgarian residence (not just a paperwork address), (c) hold the sale until you are confidently outside the UK's charge, (d) remain outside the UK for the full 5 tax years required by the temporary non-residence rule, (e) file the necessary non-resident capital gains / self-assessment returns for the years in question.

Italy — Article 166 TUIR and the 26% Capital Gains Regime

Italy's Article 166 TUIR exit tax targets unrealised capital gains on business assets when a company or an entrepreneur ceases Italian tax residency. For a typical individual founder selling shares of a private Italian S.r.l. or S.p.A., the more relevant regime is the 26% flat tax on capital gains on financial assets (applicable since January 2019 for both qualified and non-qualified shareholdings).

For Italian founders, the planning focus is usually:

• Genuinely breaking Italian tax residency under Article 2 TUIR (AIRE registration, centre of vital interests, habitual abode) — Italian revenue has been aggressive on contested residence cases;
• Sequencing the sale after Bulgarian residency is firmly established, with documentary evidence of permanent home, family life, and economic activity in Bulgaria;
• Coordinating with the Italy-Bulgaria double-tax treaty tie-breaker.

Italy does not have a Germany-style §6 AStG for portfolio shares, but revenue challenges to claimed non-residency are common and the burden of proof is real.

How Bulgaria Taxes the Same Transaction on the Other Side

Once you are a Bulgarian tax resident under the Bulgarian Personal Income Tax Act (ЗДДФЛ) — broadly, 183 days of presence in a 12-month period, or permanent address plus centre of vital interests in Bulgaria — the following rates apply to your share sales:

The combination of a 10% flat rate on unlisted share sales and a 0% rate on qualifying listed disposals is the reason founders look at Bulgaria seriously for pre-exit relocation. It is also why the departure-country exit-tax rules matter so much: if Bulgaria charges nothing on the sale, every euro of tax paid on departure is effectively the whole bill.

For detail on the 183-day rule and centre-of-vital-interests tests specific to Bulgaria, see our 183-day rule guide and our Bulgarian tax residency guide.

Sequencing: What Happens in What Order

This is an illustrative pre-sale relocation timeline. Real plans are tailored to the departure country, the deal calendar, and the founder's personal circumstances.

1. Month -18 to -12 — Exit-tax diagnostic. Home-country adviser quantifies the exit-tax exposure. We quantify the Bulgarian side. You decide whether the plan is economically worth executing.
2. Month -12 — Bulgarian residence setup. EU residence at the Migration Directorate (for EU citizens) or D-visa route (for non-EU). Rental contract for a real home. Address registration. Family relocation where applicable.
3. Month -10 — Bulgarian entity if needed. Some structures benefit from an EOOD as a receiving vehicle for rolled-over equity, intercompany loans, or post-sale reinvestment. Not every founder needs one.
4. Month -9 — Break residence cleanly in the departure country. Deregistration (Abmeldung, AIRE, UK SRT day-count, French déclaration de départ, etc.). Treaty tie-breaker documentation.
5. Month -9 to -6 — Exit-tax filing in the departure country. Where applicable (DE, NL, BE, FR), file the exit-tax declaration and secure deferral where available.
6. Month -6 — Actual life in Bulgaria. Family there, children in school, main residence there, bank accounts there, doctors and gym there. This is the part that cannot be outsourced. Without it, the treaty tie-breaker will not save you.
7. Month 0 — Closing. Bulgarian residency firmly established. Sale executed. Bulgarian personal income tax return for the year includes the gain at the relevant rate (10% / 0% / etc.).
8. Month +3 to +18 — Foreign audit resilience. Maintain the records that prove Bulgarian residence and defend against a challenge from the departure country. Keep bank statements, utility bills, flight logs, school records, medical records, board minutes (if relevant) — everything.

The OECD Treaty Tie-Breaker: Why It Is Not a Paperwork Trick

Article 4 of the OECD Model Tax Convention resolves dual residence through four sequential tests, applied in order until one of them allocates you to a single country:

1. Permanent home available. Do you have a dwelling in Bulgaria that you can use at any time, on a lasting basis — not a hotel, not a friend's spare room? Ownership is not required; a lease qualifies. If you have a permanent home in only one country, residence is allocated there.
2. Centre of vital interests. If you have a permanent home in both countries, the treaty looks at where your personal and economic relations are closer — family, social ties, occupation, political and cultural activities, management of assets.
3. Habitual abode. If the first two tests are inconclusive, the treaty looks at the frequency, duration, and regularity of your stays.
4. Nationality. Only reached if the first three tests fail.

The single most important practical consequence: a Bulgarian address registration is not a tie-breaker winner on its own. Revenue authorities in Germany, the Netherlands, France, and Italy are aggressive on contested residence cases and will look at flight manifests, credit-card statements, school enrolment, gym memberships, doctor visits, social media location data, and utility-bill consumption patterns. If the answer to "where did you actually live?" is not unambiguous, you lose.

Holding Structures and Rollovers

For many founders, the sale is not a pure cash exit. It is an earn-out, a roll-over into acquirer shares, a secondary with founder carve-outs, or a staged buy-out. Each of those structures interacts differently with the Bulgarian personal and corporate regimes:

• Pure cash sale. The cleanest case. Bulgarian tax applies to the gain computed at the moment of disposal, at 10% (unlisted) or 0% (qualifying listed).
• Earn-out. Structure and timing matter. The Bulgarian treatment of deferred consideration is broadly consistent with a "receipt when accrued" principle. Coordinate with both sides.
• Share-for-share rollover. The Bulgarian treatment depends on whether the rollover qualifies as a tax-neutral reorganisation under the EU Merger Directive as implemented in Bulgarian law — and on the departure country's treatment on the same transaction. Do not assume symmetric outcomes.
• Bulgarian EOOD holding company. In some configurations, interposing a Bulgarian EOOD between you and the operating target can change the treatment of dividends, interest, and royalties — but an EOOD above the target is a structure, not a residence strategy, and it only works when the underlying residence story is solid.

Common Mistakes We See

1. Moving too late

A founder signs the term sheet and calls us three weeks before closing. There is rarely anything useful we can do that late. The exit-tax exposure crystallised at a date that has already passed or is about to.

2. Moving on paper only

A rented Sofia flat with zero occupation, no family relocation, and the same German / Dutch / French life as before does not win a treaty tie-breaker. Revenue authorities litigate these cases and win them.

3. Assuming Bulgaria-specific planning alone is enough

We are Bulgarian lawyers. We know the Bulgarian side perfectly. We do not file the Finanzamt exit declaration for you or draft the conserverende aanslag response. That must be done by a competent adviser in the departure country, coordinated with us on a single timeline.

4. Confusing EU freedom of establishment with a tax exemption

Emigrating inside the EU unlocks specific deferral and treaty rights. It does not erase the departure country's claim. The famous CJEU cases (National Grid Indus, DMC, Verder LabTec) set limits on how aggressive exit taxes can be, not that they cannot exist.

5. Skipping the Bulgarian-side filings

Once you are resident, Bulgaria wants a yearly declaration (Art. 50 ЗДДФЛ) that reports worldwide income, including the gain on the sale. Even when the Bulgarian rate on the gain is 0% (listed EU/EEA shares), it is still declared. Do not leave the Bulgarian return empty because you "think" there is no tax.

Frequently Asked Questions

Disclaimer: This article provides general information about pre-sale relocation to Bulgaria and does not constitute legal or tax advice in Germany, the Netherlands, Belgium, France, the United Kingdom, Italy, Bulgaria, or any other jurisdiction. Exit-tax rules change frequently and require country-specific counsel. Our role is the Bulgarian side of the file; we coordinate with your home-country adviser on the departure-side steps. Last updated: April 16, 2026.