Tax Residency in Bulgaria: How the Flat 10% Tax Works for Individuals and Companies

This is part of our complete guide to relocating and doing business in Bulgaria.

You become a Bulgarian tax resident if you spend more than 183 days a year in the country or your center of vital interests is there, which then subjects your worldwide income to Bulgaria’s flat 10% personal income tax — among the lowest in the EU — while company profits are taxed at a flat 10% corporate rate too. Freelancers and companies alike also need to account for VAT registration thresholds and mandatory social security contributions, which materially affect the real take-home comparison against other low-tax jurisdictions.

A note before you read further: this article is general information about how Bulgarian tax residency and the flat tax system work. It is not personalized tax or legal advice, and it shouldn’t be treated as a substitute for a review of your specific circumstances. Tax residency, double taxation treaties and structuring decisions depend heavily on individual facts — where else you’re taxed, what income streams you have, what treaty applies to your citizenship. For anything beyond general understanding, book a consultation with our tax and legal team before you act on any of it.

What makes you a Bulgarian tax resident?

Bulgarian tax residency turns on two independent tests, and you only need to trip one of them.

The first is the 183-day rule: if you physically spend more than 183 days in Bulgaria within a calendar year, you’re a tax resident for that year, full stop. This is the test most people expect, and it’s the easiest to track — count your days in the country against the calendar.

The second is less mechanical and catches people off guard: your center of vital interests. Even if you spend fewer than 183 days physically in Bulgaria, you can still be treated as a tax resident if your personal and economic ties are concentrated there — where your family lives, where you own property, where your main economic activity is based. Tax authorities look at the whole picture, not a single factor, which means someone who splits time across countries but has a spouse, a home and a company in Bulgaria can be a tax resident without ever crossing the 183-day mark.

Once either test is met, the consequence is significant: Bulgaria taxes your worldwide income, not just income earned inside the country. That’s the detail that surprises people who assumed tax residency only affected local earnings.

It’s also worth being precise about what tax residency is not. It is a distinct legal status from your immigration or residence status — holding a Bulgarian residence permit doesn’t automatically make you a tax resident, and being a tax resident doesn’t require holding a residence permit. We unpack that distinction in detail in our guide to the Bulgaria residence permit process, since the two are commonly and understandably confused.

How does the flat 10% personal income tax actually work?

Bulgaria applies a single flat rate of 10% to personal income, regardless of how much you earn. There are no progressive brackets pushing higher earners into steeper rates the way most EU countries structure their income tax. Whether you earn the equivalent of €20,000 or €200,000 a year, the rate applied to your taxable income is the same 10%.

This flat structure is one of the lowest personal income tax rates in the EU, and it’s the single biggest reason freelancers, remote workers and digital nomads look at Bulgaria seriously when comparing where to base themselves. It’s also drawn significant interest from people relocating from Russia, Belarus and Ukraine in recent years, alongside Western Europeans and Americans working remotely.

The 10% rate applies once you’re a tax resident, to your worldwide taxable income as described above. For freelancers operating individually (registered via BULSTAT rather than a company), this is the rate applied to net income after allowable deductions — the mechanics of how those deductions work, and what qualifies, are exactly the kind of detail worth confirming for your specific income type in a consultation rather than assuming from general rules.

What the headline 10% figure doesn’t include is social security, which is calculated and paid separately and can meaningfully change your real cost of doing business in Bulgaria. We cover that in detail further down, because it’s the part people most often underweight when comparing Bulgaria’s tax rate against other countries.

How is company profit taxed, and how does it differ from personal tax?

Company profit in Bulgaria is also taxed at a flat 10% rate — Bulgaria’s corporate tax rate mirrors its personal income tax rate exactly, which is part of what makes the system easy to reason about at a headline level.

But the mechanics differ meaningfully from personal taxation, and this is where the “which structure is better” question actually gets decided. A company (typically an EOOD or OOD) pays 10% corporate tax on its profit. If you then want to take that money out personally, as a dividend, a separate dividend tax applies on top — so money that started as company profit and ends up in your personal account has passed through two layers of tax, not one.

A freelancer operating individually, by contrast, pays the 10% personal income tax directly on net income, with no second layer, but carries social security obligations as a self-employed person from day one, and doesn’t get the liability protection or the professional appearance that a registered company can offer with larger or more risk-sensitive clients.

Which structure nets out better depends on how much you earn, how much you actually withdraw versus reinvest in the business, and your personal tax residency situation — not on the headline rate alone. We walk through the EOOD/OOD-versus-freelancer decision in full, including registration steps and costs, in our guide to registering a company in Bulgaria. If you’re weighing the two structures against your actual numbers, that’s a conversation for our tax and legal service rather than a generic comparison.

What about social security contributions — how much do they really cost you?

This is the cost that gets left out of most “Bulgaria has 10% tax” conversations, and it shouldn’t be.

If you’re self-insured — the typical setup for an owner-manager of an EOOD or OOD, or a self-employed freelancer — you pay social security contributions separately from income tax. The total contribution runs roughly 32.7% to 33.4% of a chosen insurable income, which you select within a set range currently running from about EUR 550.66 to EUR 2,111.64 per month.

In practice, this means your real cost of earning income in Bulgaria isn’t just “10% tax.” It’s 10% tax plus a social security contribution calculated on a separately chosen income base, and that base doesn’t have to match your actual earnings exactly — it sits within a defined band, which is itself a planning decision with trade-offs (lower contributions now versus lower pension and benefit entitlements later).

This is precisely why comparing Bulgaria’s tax rate in isolation against another country’s headline rate can be misleading. A country with a nominally higher income tax rate but lower mandatory social contributions might land at a similar or even better real take-home outcome, depending on the numbers. Modeling your actual insurable income choice and its knock-on effects is something our tax and legal service handles directly, because the “right” insurable income level genuinely varies by person and business stage.

When do you need to register for VAT, and at what threshold?

VAT registration in Bulgaria is not automatic and not tied to tax residency — it’s tied to turnover. You’re required to register for VAT once your taxable turnover exceeds EUR 51,130 within a calendar year.

Starting 1 January 2026, that threshold is measured on a straightforward calendar-year basis, January through December, rather than a rolling 12-month lookback. That’s a meaningful simplification for tracking purposes: instead of constantly checking your trailing twelve months, you’re watching a fixed annual window.

Once you cross the threshold, you’re required to register within 7 days. That’s a tight window, and missing it creates avoidable compliance exposure — this is one of the more common oversights among freelancers and small business owners whose revenue grows unevenly through the year and who aren’t tracking cumulative turnover closely.

Voluntary VAT registration below the threshold is also an option, and some businesses choose it deliberately, particularly those invoicing EU B2B clients who expect a VAT number for reverse-charge purposes, or those wanting to reclaim input VAT on business costs. Whether voluntary registration helps or hurts your specific situation depends on your client base and cost structure, which is worth modeling with our tax and legal service rather than guessing.

How does Bulgaria compare to other popular low-tax relocation destinations?

Bulgaria sits firmly in the “low flat tax” category of EU jurisdictions that freelancers and remote workers commonly compare when deciding where to base themselves. Its 10% flat rate on both personal income and corporate profit is genuinely one of the lowest headline rates in the EU, and unlike jurisdictions that offer a low rate only through a special regime with eligibility conditions and time limits, Bulgaria’s flat rate is the standard, ordinary rate that applies broadly.

Where the comparison gets more nuanced is on the full picture: social security contributions, VAT rules, the cost and ease of forming a company, quality of life, and EU membership itself (which matters for banking, travel and business access across the bloc). Some competing destinations offer lower or capped social contributions but higher headline tax rates; others offer special nomad or entrepreneur regimes with lower rates but stricter eligibility windows or sunset clauses. Bulgaria’s advantage is consistency and simplicity — the flat rate isn’t a temporary incentive, and the rules apply the same way to a freelancer as to a growing company.

We’re not going to put specific numbers on other countries’ tax systems here, since rates and rules shift and a fair comparison needs to be run against your actual income, structure and citizenship. If you’re actively comparing Bulgaria against another jurisdiction, that side-by-side is exactly the kind of question worth bringing to a consultation rather than working from headline percentages alone.

Can you be tax resident in Bulgaria and still owe tax elsewhere?

Yes, and this is one of the more common points of confusion for people relocating internationally. Becoming a Bulgarian tax resident doesn’t automatically erase tax obligations you may still have in another country — particularly your country of citizenship (in some tax systems, notably the US) or a country where you still hold significant ties.

Bulgaria has double taxation treaties with many countries, and these treaties are specifically designed to prevent the same income from being taxed twice. But how a treaty applies — which country gets primary taxing rights over which type of income, what credits or exemptions are available, what paperwork proves your residency status to the other country — depends entirely on the specific treaty between Bulgaria and your other country, and on your individual situation. We’re not going to make claims here about how any particular country’s treaty works, because it genuinely varies and getting it wrong has real financial consequences.

If you have tax obligations, income, or residency ties in another country, treaty relief and cross-border tax planning is not something to assume works out automatically. It needs professional review of your specific facts, and that’s a core part of what our tax and legal service is set up to handle for clients relocating from abroad.

What records and filings do you need to stay compliant?

Staying compliant as a Bulgarian tax resident, whether individual or company, comes down to a few recurring obligations rather than a one-time setup.

For individuals: an annual personal income tax return declaring your income for the calendar year, filed within the statutory deadline. If you’re self-insured, your social security contributions are typically declared and paid on a regular schedule throughout the year, not just annually.

For companies: annual financial statements and a corporate tax return are required regardless of whether the company was actively trading, and companies with no activity in a given year generally still carry a filing obligation. VAT-registered businesses have their own recurring filing cadence, typically monthly.

Currency note: following Bulgaria’s adoption of the euro on 1 January 2026, filings and payments are made in euro rather than the previous Bulgarian lev (which was fixed at 1.95583 BGN to 1 EUR). If you’re working from historical figures or older advice, be aware that older documentation may still reference lev amounts.

Keeping clean records — invoices, contracts, proof of days spent in the country if residency is close to the 183-day line, bank statements supporting your center-of-vital-interests position — matters more than people expect, particularly if your residency status or income sourcing is ever questioned. This is ongoing administrative work, not a one-time filing, and it’s the kind of recurring obligation our tax and legal service is built to carry for clients so nothing gets missed between filing seasons.

Frequently Asked Questions

Is this article personalized tax advice?

No. This is general information about how Bulgarian tax residency and the flat 10% tax system work. Your specific situation — income sources, other countries involved, structure — needs individual review. Book a consultation with our tax and legal team before making decisions based on this alone.

Does holding a Bulgarian residence permit make me a tax resident?

Not automatically. Residence status and tax residency are governed by separate rules — tax residency depends on the 183-day rule or your center of vital interests, not on whether you hold a residence permit. See our guide to the Bulgaria residence permit process for how the two statuses actually relate.

Is Bulgaria’s 10% tax rate really flat, with no brackets?

Yes, for both personal income tax and corporate tax, Bulgaria applies a single 10% rate regardless of income level. There are no progressive brackets pushing higher earners into a higher rate.

Do I pay social security on top of the 10% tax?

Generally yes, if you’re self-insured (typical for freelancers and owner-managers of a company). Contributions run roughly 32.7-33.4% of a chosen insurable income within a set monthly range, separate from income tax, and materially affect your real cost of operating in Bulgaria.

If I’m taxed in Bulgaria, could I still owe tax in my home country?

Potentially, depending on your citizenship, other ties, and the specific double taxation treaty (if any) between Bulgaria and that country. This varies significantly by country and situation, so it needs individual review rather than a general answer.

What’s the difference between a company paying tax and a freelancer paying tax in Bulgaria?

A company pays 10% corporate tax on profit, and a further dividend tax applies if profits are withdrawn personally. A freelancer pays 10% personal income tax directly on net income, with social security layered on top, but without the second dividend layer. Our guide to registering a company in Bulgaria covers the structural trade-offs in full.

Tax residency has real structuring decisions behind it — get it right from day one. Start with our tax and legal service or book a consultation to walk through your specific situation.