Foreign clients can create Bulgarian VAT obligations
VAT registration should be reviewed before the first foreign-client invoice, not after several months of trading. The answer depends on the client country, whether the customer is a business or consumer, the service, your current VAT status and the evidence you hold.
A common mistake is to ask only: “Do I add Bulgarian VAT?” That is only one part of the analysis. A transaction may require Bulgarian VAT registration and reporting even when the invoice itself does not include Bulgarian VAT.
A freelancer or company established in Bulgaria provides standard consulting, software-development, design or marketing services to a genuine business customer established in the stated country. B2C, digital services, property, events, transport and other special services can produce a different result.
The five questions that determine the VAT result
- Is the customer a business or a private individual?
- In which country is the customer established?
- Which customer establishment actually receives the service?
- What exactly is being supplied?
- What is the supplier's Bulgarian VAT registration status?
Contracts, websites and payment records are useful, but they do not replace a proper classification of the service and customer.
B2B and B2C are not interchangeable
B2B service
For many standard services, the place of supply follows the business customer. Reverse-charge or outside-scope treatment may apply.
B2C service
The result can follow the supplier or special customer-location rules. Electronic and digital services require particular care.
A company name on an email signature is not always enough to prove business status. For EU clients, a valid VAT number is an important indicator. For non-EU clients, use other reliable commercial and tax evidence.
Example 1: business client in the EU
Scenario: a Bulgarian software consultant provides monthly development services to a German company. The German company supplies a valid German VAT number, receives the service for its business and has no Bulgarian establishment involved in the purchase.
For a standard B2B service, the place of supply will commonly follow the German customer. Bulgarian VAT is therefore generally not added to the invoice, and the customer accounts for VAT under the reverse charge in Germany.
This does not mean the Bulgarian supplier can ignore registration. Providing qualifying services to an EU business can trigger a special Bulgarian VAT registration before the supply, even when the supplier is below the general domestic turnover threshold.
Practical consequences
- validate and retain the customer's VAT number through VIES;
- complete the Bulgarian VAT registration review in advance;
- use invoice wording appropriate to the legal treatment;
- include the qualifying transaction in VIES reporting;
- include it in the relevant Bulgarian VAT records and return;
- retain the contract, invoice and service evidence.
If the German customer has no valid VAT number, is buying privately, or receives the service through another establishment, the outcome must be reassessed.
Example 2: business client in the UK
Scenario: a Bulgarian marketing company provides monthly strategy services to a UK limited company that receives the service for its business.
The United Kingdom is outside the EU VAT system. For many standard B2B services, the place of supply follows the UK business customer, so Bulgarian VAT is generally not charged. UK reverse-charge rules may require the UK customer to account for UK VAT.
Practical consequences
- confirm that the customer is a genuine UK business;
- retain Companies House, tax or commercial evidence;
- review the service for exceptions to the general B2B rule;
- use invoice wording supported by the actual VAT analysis;
- do not include the UK invoice in VIES;
- record the invoice correctly in Bulgarian accounting.
A UK client does not normally create the same EU VIES obligation as a German client. However, the invoice and transaction still belong in the Bulgarian accounting and, where applicable, VAT records.
Example 3: business client in the USA
Scenario: a Bulgarian IT company provides software consulting to a US corporation. The customer contracts and pays as a business and receives the service in the United States.
For many standard B2B services supplied to a US business, Bulgarian VAT is generally not charged because the place of supply follows the customer outside the EU. The invoice is not included in VIES.
Practical consequences
- retain evidence that the customer is a business;
- record its legal name, address and registration details;
- document the service and the establishment receiving it;
- review whether a special place-of-supply rule applies;
- do not treat “outside the EU” as “outside accounting”;
- reconcile foreign-currency invoices and payments.
The United States does not operate the EU VAT and VIES system. Avoid copying EU reverse-charge language mechanically onto a US invoice. The invoice wording should reflect the Bulgarian place-of-supply analysis and the actual transaction.
EU, UK and USA comparison
EU business client
Usually no Bulgarian VAT for a standard B2B service, but a Bulgarian registration review, valid VAT number and VIES reporting may be required.
UK or US business client
Usually no Bulgarian VAT for a standard B2B service and no VIES, but business-status evidence and correct Bulgarian records are still required.
What VIES changes
VIES is relevant to qualifying cross-border EU transactions. It is not a worldwide foreign-client report. EU business-client details should be validated and retained, and the VAT number should be checked near the time of the transaction.
UK and US clients are not included in VIES. Their absence from VIES does not remove the need for contracts, invoices, business-status evidence and Bulgarian accounting records.
Not every Bulgarian VAT registration has the same scope
The reason for registration matters. A registration connected to particular cross-border services can have a different scope from a full registration under the general rules. Do not assume that every registration produces identical charging or input-tax rights.
SofiaTax reviews both the trigger and the operational consequence: what appears on sales invoices, which purchase invoices require reverse-charge treatment, what is reported monthly and whether a broader voluntary registration is commercially appropriate.
Foreign purchases can also trigger VAT questions
The analysis should not stop with customers. Bulgarian freelancers and companies often buy advertising, software, cloud hosting, platforms and professional services from suppliers established abroad.
Receiving cross-border business services can create Bulgarian reverse-charge and registration obligations. A business with only a US customer may still need a VAT review because it buys services from an EU or non-EU platform.
Evidence to keep for foreign-client VAT
- the signed contract or accepted engagement terms;
- the customer's legal name and registered address;
- EU VAT-number validation where relevant;
- other business-status evidence for non-EU customers;
- a clear description of the service and service period;
- issued invoices and credit notes;
- bank or payment-provider records;
- evidence of which establishment received the service.
Good evidence should support the treatment used at the time of the supply. Reconstructing the facts during a later review is slower and less reliable.
Cases that need a separate analysis
The three examples should not be reused without review for:
- services supplied to private individuals;
- automated digital or electronic services;
- services connected with land or property;
- admission to events, education or entertainment;
- transport, vehicle hire, catering or accommodation;
- goods, imports, exports or distance sales;
- platform or marketplace arrangements;
- a customer with multiple establishments;
- services used or enjoyed in a different jurisdiction.
How SofiaTax can help
SofiaTax provides VAT registration and ongoing reporting support for freelancers, consultants and foreign-owned companies working from Bulgaria.
- review of clients, countries, services and contracts;
- assessment of Bulgarian VAT registration triggers;
- coordination of the registration process;
- invoice and reverse-charge treatment guidance;
- monthly VAT ledgers and VAT returns;
- VIES reporting for qualifying EU transactions;
- review of foreign supplier invoices and platforms;
- ongoing accounting aligned with the VAT position.
Common mistakes
- waiting for a turnover threshold before reviewing EU services;
- issuing the first EU invoice before registration is checked;
- assuming every foreign customer is automatically B2B;
- using the same invoice wording for EU, UK and US clients;
- reporting UK or US invoices in VIES;
- forgetting VAT obligations on foreign purchases;
- not retaining VAT-number or business-status evidence;
- treating all services as subject to the general B2B rule.
VAT reference points
The EU cross-border VAT guidance explains the general treatment of services supplied to EU and non-EU businesses. UK customer-side reverse-charge principles are described in HMRC VAT Notice 741A. These general resources do not replace the Bulgarian registration and reporting analysis for the supplier.
Frequently asked questions
Do I need Bulgarian VAT registration to invoice an EU business client?
Possibly, and the review should happen before the first supply. Qualifying EU B2B services can create a special registration and reporting obligation even when Bulgarian VAT is not charged.
Do I charge Bulgarian VAT to a UK business client?
For many standard B2B services, no. The customer status, service and receiving establishment must still be verified.
Do I charge Bulgarian VAT to a US business client?
For many standard B2B services to a genuine US business, no. Business-status and location evidence should be retained.
Are UK and US invoices included in VIES?
No. VIES concerns qualifying EU transactions. UK and US clients are outside the EU VAT system.
Does no Bulgarian VAT mean no VAT registration?
No. Invoice charging and registration are different questions. Cross-border transactions can trigger registration and reporting without Bulgarian VAT appearing on the invoice.
Can SofiaTax handle registration and monthly VAT reporting?
Yes. We can review the model, coordinate Bulgarian VAT registration and provide ongoing VAT returns, VIES reporting and invoice support.
This guide provides general information and uses simplified B2B examples. The correct VAT result depends on the exact customer, service, establishments involved, contracts and registration status.