Moving to Bulgaria as a Freelancer: Tax Residency and Your First-Year Checklist

Confirm the legal route

Can you live and work in Bulgaria?

Check your nationality, current residence status and planned activity before committing to a start date. Immigration permission, permission to perform a particular activity and tax registration serve different purposes.

If you practise a regulated profession, check recognition and professional registration as well. Keep the documents establishing the route you actually use.

Facts before assumptions

When are you a Bulgarian tax resident?

Bulgarian personal income-tax residence is determined independently of citizenship. Article 4 includes permanent-address, physical-presence and centre-of-vital-interests tests, as well as a specific rule for people sent abroad by Bulgarian bodies or enterprises.

The physical-presence test is more than 183 days in any 12-month period, with entry and exit days counted as days in Bulgaria. Stays solely for study or medical treatment are excluded. The centre-of-vital-interests assessment considers family, property, professional or business activity and where property is managed. A Bulgarian permanent address alone does not establish residence where the centre of vital interests is outside Bulgaria.

Keep a travel log with evidence rather than relying on memory. Include short returns to your previous country and trips elsewhere. If the move crosses December, ask for a year-by-year conclusion rather than assuming that your arrival date automatically divides the tax year.

A coordinated answer

What if two countries treat you as resident?

First apply each country’s domestic rules. If both claim residence and a double-tax treaty applies, use the residence article in that specific treaty. Many treaties examine permanent home, centre of vital interests, habitual abode and nationality in sequence, with competent-authority agreement where needed. The wording of your treaty controls.

Treaty residence and the allocation of taxing rights are related but separate steps. Identify each income category and the applicable article. Then check the relief method, documentation and filing procedure in the country granting relief.

Tax relief may involve an exemption, credit or a claim in the source country. Do not assume that every foreign tax payment is fully creditable. Keep proof of the income, its category and any foreign tax withheld or paid.

Plan the transition

Your first year can involve filings in both countries

Prepare a timeline showing the move, available homes, changes in family circumstances, work locations, contracts and payments. Match each income stream to that timeline. A domestic residence conclusion does not automatically remove source-country tax or filing duties.

Bulgarian resident individuals are generally within the Bulgarian tax framework for income from Bulgaria and abroad; non-residents are generally assessed on Bulgarian-source income, subject to exemptions and treaty rules. A foreign customer or foreign bank account does not by itself establish that the service income has a foreign source.

If you retain a foreign company, keep its analysis separate from your personal residence. Changing the invoice address without reviewing where the company is managed or operates can leave material questions unresolved.

A separate legal assessment

Where should you pay social security?

Tax residence does not determine social-security coverage. Under EU coordination rules, the applicable legislation generally follows where work is performed, with specific rules for temporary postings and work in several countries. You cannot simply select the cheapest system.

An A1 document confirms the applicable social-security legislation in qualifying cross-border situations. For a genuine temporary self-employed posting, continued coverage in the original country may be possible if the conditions are met. A permanent relocation requires its own assessment. If you work in several countries, disclose the complete pattern to the competent institution.

Healthcare entitlement also needs attention. An S1 may be relevant where you live in a different country from the one responsible for your coverage. An EHIC is intended for necessary healthcare during temporary stays and does not by itself resolve a permanent move.

For UK or other non-EU connections, identify the coordination arrangement or bilateral agreement that actually applies. Do not extend EU rules to every country automatically. Once the applicable system is confirmed, arrange registration, payments and healthcare access without a gap.

Prepare before your first invoice

Register the activity and check VAT early

Choose the legal form based on your actual activity, eligibility, costs and plans. A freelance-profession route and a Bulgarian company have different accounting and tax processes. Some activities require a different classification or professional permission.

For an applicable freelance-profession registration, the NRA describes BULSTAT registration and self-insurance declarations linked to starting the activity, with seven-day deadlines. The Registry Agency also specifies particular registration categories and exceptions for foreign persons. Confirm your identification number, eligibility and filing sequence rather than assuming every foreign applicant follows an identical route.

Where Bulgarian self-insurance applies, agree the activity start date and the registration process before submitting forms. Coordinate this with any valid foreign coverage determination.

VAT deserves a separate check before EU assignments, foreign software purchases or platform fees. Article 97a can create registration duties before substantial turnover. Review both the services you sell and those you buy.

Support the real facts

What evidence should you keep?

• Presence: a dated travel log, tickets and supporting travel records.
• Homes: leases, ownership records and evidence of whether a previous home remains available.
• Personal ties: family living arrangements and the timing of genuine changes.
• Work: contracts, work-location records and documents showing where your business is run.
• Tax: prior returns, residence certificates, foreign-tax documents and relevant correspondence.
• Insurance: coverage decisions, A1 or S1 where applicable and registration confirmations.

A Bulgarian tax-residence certificate is obtained through the NRA. Individuals complete the relevant personal-information section, and additional evidence may be requested. If a foreign tax authority’s form needs certification, check the NRA’s translation and submission requirements.

The certificate supports a residence position; it does not itself create the underlying facts or automatically settle every claim by another country. Make sure it corresponds to the period and purpose for which it is requested.

A practical sequence

Your relocation checklist

1. Before moving. List nationalities, residence statuses, available homes, family ties, income streams, company interests and insurance arrangements. Ask advisers in both countries to review the planned dates.
2. Before starting work in Bulgaria. Confirm your right to perform the activity, legal form, registration requirements and applicable social-security legislation. Review VAT before the first relevant transaction.
3. On arrival. Complete the applicable residence formalities, organise identification and access to tax filings, and retain the housing and travel evidence.
4. During the year. Maintain monthly income and fee records, required filings, insurance payments and the travel log. Report changes to your working pattern.
5. Before annual returns. Reassess the actual facts for the year, reconcile all income, obtain foreign-tax evidence and prepare treaty-relief claims and any residence-certificate request.

Clear answers

Frequently asked questions

Explore the complete freelancing framework

Freelancing in Bulgaria · VAT registration for freelancers · Platform payments and records