UIC or EIK
Identifies the Bulgarian legal entity in the Commercial Register. It does not by itself confirm VAT registration.
What is a VAT number in Bulgaria?
A Bulgarian VAT number normally consists of the country prefix BG followed by nine or ten digits. For an EOOD or OOD company, it is usually BG plus the company’s nine-digit UIC or EIK. A UIC is not automatically a valid VAT number. Active VAT status must be confirmed through the Bulgarian National Revenue Agency or the EU VIES system.
Typical company format
BG followed by a nine-digit UIC or EIK
What proves VAT status
An active NRA registration and effective registration date
EU verification
A current result from the official VIES validator
Introduction
A Bulgarian VAT number generally consists of the “BG” country prefix followed by the company’s Bulgarian identification number. However, the exact VAT status should always be verified through the Bulgarian National Revenue Agency or the EU VIES system.
That qualification matters. A number can look perfectly correct, match the company’s UIC, and still be inactive for VAT purposes. Typing “BG” before a Bulgarian company number does not magically create a valid VAT registration number in Bulgaria.
Foreign founders often blur three separate identifiers: the company number, the UIC or EIK, and the VAT ID. Usually, the digits are related. Their legal functions are not. The Registry Agency identifies the entity, while the National Revenue Agency, commonly called the NRA, determines its VAT status under the Bulgarian VAT Act.
This distinction becomes expensive when invoices start moving across borders. A supplier may treat a transaction as an intra-Community supply, an online marketplace may request VIES validation, or a Bulgarian company may receive advertising, software, or consulting services from another EU member state. One wrong assumption can produce invoice corrections, rejected input VAT, interest, and penalties.
Bulgaria remains attractive because of its EU market access, 10% corporate tax, competitive operating costs, and relatively efficient company formation. VAT is a different tax system. It has its own registration triggers, evidence standards, reporting calendar, and invoice rules. The attractive corporate income tax rate tells you almost nothing about your VAT obligations.
UIC, Bulgarian VAT ID and VIES are not the same thing
Bulgarian VAT ID
Identifies a taxable person registered under the Bulgarian VAT Act and normally includes the BG country prefix.
VIES result
Shows whether the VAT number is currently recognised for the relevant EU cross-border VAT purpose.
VAT Number Bulgaria: Format and Prefix Rules
The usual Bulgaria VAT number format is BG followed by nine or ten digits. For a standard Bulgarian commercial company, such as an EOOD or OOD, the digits will commonly correspond to the company’s nine-digit UIC, also known as EIK.
The format alone proves very little. It proves that someone knows how Bulgarian VAT IDs are usually written. Active status must come from an official database.
Standard Structure
A Bulgarian VAT identification number contains two elements:
- BG, Bulgaria’s two-letter country code
- Nine or ten numeric digits, depending on the type of registered person and the underlying Bulgarian identifier
Most foreign entrepreneurs establishing an EOOD encounter the familiar BG + nine-digit UIC structure. Ten-digit identifiers can arise for natural persons and other categories of taxable persons whose identification is based on a different national number.
Bulgaria does not follow every other European pattern. Spain may use a mixture of letters and digits, while Greece uses the alpha-2 country code GR followed by its national format. A Bulgarian VAT ID should be checked under Bulgaria’s own validation rules rather than judged by the appearance of a French, German, or Spanish number.
BG Prefix
The “BG” prefix is part of the VAT identification number used on VAT invoices, contractual records, VIES declarations, and cross-border EU documentation. It identifies Bulgaria as the issuing EU member state.
Local documents may also show the company’s EIK without the prefix because that field is identifying the legal entity rather than stating its VAT status. This is where otherwise competent founders get tangled. They see the same digits on a Trade Register extract and assume they are already registered.
Use the full BG-prefixed number when a form asks for a Bulgaria VAT ID. Do not add BG to an inactive EIK and present it as a valid VAT number.
Format Example
Suppose a Bulgarian company has the fictional UIC 123456789.
| Identifier | Fictional display | What it means |
|---|---|---|
| UIC or EIK | 123456789 | Identifies the company in the Bulgarian Commercial Register |
| Claimed VAT ID | BG123456789 | Correct-looking Bulgaria VAT number format |
| Verified VAT ID | BG123456789 plus active NRA or VIES result | Evidence that the company currently holds relevant VAT registration |
This example is deliberately fictional. Bulgarian identifiers use checksum controls, so random digits should never be used on a real invoice.
A valid-looking number may belong to another entity, may have been deregistered, or may not yet be active in the relevant database. A screenshot from an old invoice is not VAT number verification. Bulgaria’s official records should settle the point.
Company Number, UIC, BULSTAT, and VAT ID
The company number, UIC, BULSTAT code, and VAT ID are often spoken about as if they were interchangeable. That shortcut works until it doesn’t, usually when a bank, marketplace, accountant, or tax officer asks what the number legally represents.
Company Number
A Bulgarian commercial company receives a Unified Identification Code when it is entered in the Commercial Register maintained by the Registry Agency. In Bulgarian, this is the Единен идентификационен код, shortened to EIK and commonly written in English as UIC.
The UIC is the company’s permanent corporate identifier. It appears on registry records, contracts, invoices, filings, and official correspondence. It confirms that the company exists as a registered entity. It does not, by itself, confirm VAT registration.
Company formation and VAT registration are separate procedures handled by different authorities. An EOOD may be incorporated, operate a bank account, sign contracts, and issue non-VAT invoices before obtaining VAT status, provided no mandatory registration trigger has already arisen.
UIC and BULSTAT
“BULSTAT” is still used casually as a catch-all term for a Bulgarian identification number. Legally, the picture is more precise.
Commercial companies entered in the Commercial Register are generally identified by their UIC or EIK. The separate BULSTAT Register covers persons and entities that fall within its statutory scope, which can include certain branches, non-commercial entities, foreign persons, and self-employed professionals.
An EGN is a Bulgarian personal identification number for an individual. It is not a company UIC. A TIN is the broader international concept of a tax identification number, and different tax numbers may be used depending on whether the subject is a company, individual, foreign entity, or VAT-registered taxable person.
These labels matter when preparing an application. Giving the NRA a founder’s personal number where it expects the company EIK, or describing a foreign registration code as a Bulgarian BULSTAT code, creates needless correspondence.
VAT Status
VAT status is granted and administered by the National Revenue Agency. Once registered, the taxable person receives a Bulgarian VAT ID number associated with the underlying national identifier.
VAT registration does not create a new company. Nor does it replace the UIC. It adds a tax status with continuing obligations under the Bulgarian Value Added Tax Act.
That status can also change. A business may become registered, later deregister, or hold a registration that has a narrower legal basis than the founder assumes. The registration act, effective date, and applicable statutory ground should be reviewed, not merely filed away.
Who Must Register for VAT?
A business must register when a statutory trigger under the VAT Act applies. The turnover threshold is only one trigger, despite receiving nearly all the attention online.
The current VAT registration threshold, measurement period, application deadline, and any transitional rule must be verified against legislation and official NRA guidance in force when the obligation arises. Bulgaria has amended these rules over time. Old blog posts are poor tax calendars.
The Ministry of Finance guidance on Bulgarian VAT provides an official starting point, though transaction-specific advice may still be needed.
Mandatory Registration
Domestic mandatory VAT registration commonly arises when a taxable person reaches the applicable level of taxable turnover during the legally defined measurement period.
“Turnover” needs care. The accounting figure shown as total revenue does not always equal taxable turnover for VAT purposes. The place of supply, nature of the transaction, exemption, customer status, and statutory inclusion rules can change the calculation.
A sensible turnover file should identify:
- The invoice and transaction date
- The customer’s country and taxable-person status
- The type of goods or services supplied
- The place-of-supply treatment
- Whether the amount enters the statutory taxable-turnover calculation
Waiting for year-end accounts is a bad habit. Registration deadlines can arise before the annual financial statements are prepared, and backdated bookkeeping does not repair a missed legal date.
Mandatory VAT registration may also arise independently of the general domestic threshold. Foreign suppliers, intra-Community acquisitions, business-to-business services, and particular taxable supplies can have their own rules.
VAT registration should not be tested only by turnover
The applicable Bulgarian VAT registration threshold, measurement period and filing deadline must be verified under the rules in force when the obligation arises.
Cross-border services, intra-Community transactions, foreign suppliers, stock movements and certain supplies by non-resident businesses may create a VAT registration obligation before the ordinary domestic turnover threshold is reached.
A company receiving Google Ads, software subscriptions, cloud hosting,
marketplace services or consulting from another EU country may need a separate
VAT analysis even when its domestic turnover is still low.
Voluntary Registration
A taxable person may apply for voluntary VAT registration before crossing the general threshold, subject to the conditions of the VAT Act.
Voluntary registration can make commercial sense when the company has substantial VAT-bearing costs, sells mainly to VAT-registered businesses, or needs an active VIES Bulgaria VAT number for its EU contracting model. It can also impose a real cash and administrative burden.
Take a consulting company that invoices mostly non-business customers. Adding VAT may increase the final price if those customers cannot deduct it. A software outsourcing company serving VAT-registered EU companies has a different commercial profile. Its cross-border services may be governed by B2B place-of-supply and reverse-charge rules, making early registration more useful.
Input tax deduction is not automatic merely because the business holds a number. The purchase must support taxable activity, the invoice must meet legal requirements, and deduction restrictions may apply. Voluntary registration should be modeled around actual transactions, not treated as a badge of credibility.
Cross-Border Triggers
Cross-border rules catch small businesses because they can apply before the ordinary turnover threshold is reached.
A Bulgarian business buying Google Ads, cloud hosting, software subscriptions, marketplace services, or foreign consulting may be receiving B2B services from a supplier established abroad. The reverse-charge and special registration rules must be examined before the invoice arrives. The amount spent may be modest. That does not automatically remove the obligation.
Other situations demanding early review include:
- Supplying qualifying B2B services to taxable customers in other EU countries
- Acquiring goods from suppliers in another EU member state
- Holding stock or making local supplies in Bulgaria as a foreign company
- Operating e-commerce sales under domestic, distance-selling, or OSS rules
- Installing goods, organizing events, or supplying services connected with Bulgarian real estate
- Using online marketplaces or fulfillment warehouses across several European countries
An Article 97a-style registration for cross-border services is frequently confused with ordinary full registration. The deduction rights and legal consequences may differ according to the registration ground. That difference belongs in the transaction design, not in a panicked conversation after several months of foreign advertising invoices.
Unsure which Bulgarian VAT registration route applies?
Turnover is only one part of the analysis. A professional consultation can review your contracts, customer countries, foreign services, EU sales, stock movements and invoice flow before a registration route is selected.
- Identify the likely VAT registration trigger and deadline.
- Distinguish full registration from Article 97a and other special grounds.
- Review OSS, EU services, foreign suppliers and reverse-charge exposure.
- Prepare a practical document and invoicing plan.
How Do You Obtain Registration?
VAT registration in Bulgaria is an administrative tax procedure supported by evidence. The company files an application, the NRA reviews the stated grounds and business activity, and the authority issues a registration or refusal act.
For foreign-owned companies, the paperwork is rarely the difficult part. The harder task is proving a coherent commercial story. Who are the customers? What will be sold? Where are decisions made? How is the activity financed? Why does the entity need registration now?
National Revenue Agency
The Bulgarian National Revenue Agency handles VAT registration, administration, audits, returns, and deregistration. The Registry Agency handles the company’s incorporation and Commercial Register record. Mixing those institutions causes surprisingly persistent mistakes.
Applications are normally filed through the legally available NRA channel, often electronically by an authorized accountant, lawyer, manager, or representative holding appropriate authority. A remote process is possible in many cases, though powers of attorney, electronic signatures, translations, and access credentials must be prepared correctly.
The NRA may conduct a documentary review and request supporting material. It may also check the registered address, contact the manager, examine contracts, or ask how the core business will function. A vague description such as “international trade and services” says almost nothing and invites more questions.
Required Documents
The exact file depends on the registration ground and the applicant. A newly incorporated consultancy applying voluntarily will not have the same evidence as a German retailer storing goods in Sofia.
The NRA commonly expects some combination of:
- A completed VAT registration application and authority documents
- Commercial Register, BULSTAT, or foreign registry evidence
- Contracts, draft agreements, purchase orders, and issued invoices
- Turnover reports and accounting ledgers
- Bank statements or proof of business funding
- Evidence for premises, equipment, staff, suppliers, and operational capacity
- Information about customers, expected transactions, and cross-border payment flows
- Translations and legalization formalities for foreign documents where required
A website can help, though it does not replace contracts. So can a clear business plan, especially for a newly formed entity with no historical sales. What the NRA wants to see is a taxable person preparing for genuine economic activity, backed by documents that agree with one another.
If the registered address belongs to an office provider but the application describes a warehouse operation with physical stock, expect questions. If the company claims substantial EU sales yet has no customer communication, supplier terms, funding, or logistics arrangement, expect more.
Process and Timeline
There is no honest universal promise that every vat registration number Bulgaria application will be completed in a fixed number of days. The statutory review stages matter, but the practical timeline also depends on the registration ground, document quality, NRA requests, translation work, and whether the facts require further checking.
A straightforward application with complete records can move relatively quickly. A foreign-owned entity seeking voluntary registration before trading may take longer because the economic activity must be demonstrated rather than read from old returns.
Common causes of delay or refusal include inconsistent turnover figures, unsigned contracts, weak evidence of future activity, missing translations, an unsuitable power of attorney, difficulty contacting the manager, and explanations that conflict with the company’s bank activity.
One more issue deserves attention: timing. Do not issue an invoice carrying Bulgarian VAT before registration becomes legally effective unless a specific legal rule authorizes that treatment. The effective date on the registration act controls the next steps.
A practical explanation of the Bulgarian VAT registration procedure can help founders assemble the file, but current legislation and the facts of the transaction remain decisive.
How Do Foreign Businesses Register?
VAT registration for foreign companies in Bulgaria depends on what the foreign entity actually does here. Incorporation of a Bulgarian subsidiary is not always required. Equally, owning a company somewhere else in the EU does not shelter local Bulgarian supplies from Bulgarian VAT rules.
The analysis usually begins with place of supply, fixed establishment, customer status, movement of goods, reverse charge, and any special scheme such as OSS. Nationality is a secondary question.
EU Businesses
An EU-established business may need a Bulgaria VAT ID when it makes supplies falling within Bulgarian jurisdiction and no rule shifts the VAT liability to the customer.
Examples can include holding inventory in Bulgaria, making domestic sales from Bulgarian stock, importing goods through Bulgaria, or carrying out transactions that do not qualify for reverse charge. Marketplace and fulfillment arrangements deserve close inspection because ownership of stock can move without anyone in management noticing the tax consequence.
An EU company generally provides registry evidence from its home country, proof of its existing tax status, constitutional documents, representative authority, contracts, and transaction records. Bulgarian translations may be required.
The EU VAT system is connected, but it is not one central registration. A Romanian VAT number does not become a Bulgarian VAT number because the same business sells across the Danube. Each member state administers its own national database and registration rules within the shared European framework.
Non-EU Businesses
A business established outside the European Union may also have Bulgarian VAT obligations when it imports, stores, installs, or supplies goods and services in the country.
Non-EU status tends to add paperwork. Foreign registry extracts may need certification, an apostille or other authentication, and an official translation. The NRA will want clear evidence of who can bind the company and who is authorized to communicate with the Bulgarian authorities.
E-commerce businesses should resist the tempting assumption that a marketplace handles everything. Some platforms collect VAT on specified deemed-supplier transactions. That does not mean the seller has no registration, import, stock, invoice, or reporting duties elsewhere in the chain.
Fiscal Representatives
A non-resident taxable person may need an accredited fiscal representative in Bulgaria, depending on where it is established, the applicable legal rule, and any statutory exception.
The fiscal representative is more than a postal contact. Tax representation can involve joint responsibility, filing access, correspondence with the NRA, document retention, and exposure to the foreign business’s compliance record. For that reason, representatives usually conduct their own due diligence before accepting an appointment.
EU businesses are generally treated differently from many non-EU businesses, but broad slogans are dangerous here. Treaty arrangements, mutual-assistance rules, establishment status, and the exact registration ground can alter the answer. This point should be legally verified before filing.
Foreign-owned companies, voluntary applicants, online sellers, and businesses with cross-border EU sales should usually book a professional consultation before choosing a registration route. A short review of contracts and invoice flows often reveals obligations that a turnover-only test misses.
How Can You Verify an Active Number?
To check a Bulgarian VAT number, use an official tax database. For domestic status and detailed account matters, the NRA is the competent authority. For EU cross-border validation, use VIES.
Do the search before applying zero-rated or reverse-charge treatment, and retain evidence of the result. A customer’s email saying “we are VAT registered” is not enough.
NRA Records
The NRA portal is the primary national authority for Bulgarian VAT status. Depending on the service and access level, public or authenticated searches may provide different information.
The NRA’s official VIES guidance explains the Bulgarian side of EU VAT validation. For sensitive cases, particularly where a registration date, deregistration, or domestic status is disputed, obtain written confirmation or professional assistance rather than relying on a third-party search site.
A number may be correctly registered in the national database yet take time to appear in another system. Database maintenance windows and synchronization issues happen. Save the query date, time, number entered, and response.
EU VIES
VIES is the European Commission’s VAT Information Exchange System. It allows businesses to test whether a VAT identification number is valid for cross-border transactions within the EU.
The European Commission VIES validation tool is the proper place for an official VIES Bulgaria VAT number search. Enter Bulgaria as the member state and type the numeric portion as requested by the tool.
A valid result confirms that the number is recorded as active for the relevant EU VAT purpose at that moment. It does not certify the supplier’s invoice, prove that goods moved between countries, or decide the place of supply. Those facts still need their own audit trail.
An invalid result can mean several things: the number was entered incorrectly, registration is inactive, the national database is temporarily unavailable, or the taxpayer is not enabled for the transaction being tested. Recheck the digits and preserve the response before treating the counterparty as non-registered.
Name Mismatches
Name mismatches are common with Bulgarian companies operating on international platforms. The official record may show the legal name in Cyrillic, include “ЕООД” or “ООД,” or use a transliteration that differs from the company’s Latin-alphabet website and marketplace profile.
For example, a platform may compare “Example Trading Ltd.” against an official record reading “ЕКЗАМПЪЛ ТРЕЙДИНГ ЕООД.” A human can see the relationship. An automated validation engine may not.
The VAT number, legal name, UIC, and registered address should be aligned across the Trade Register, NRA records, invoices, bank account, and marketplace profile as far as the relevant systems permit. Do not alter official documents to force a match. Give the platform registry evidence, a translation, and the VIES result.
What Happens After Approval?
Obtaining the number is the beginning of VAT compliance. The company must identify the effective registration date, update its invoice template, configure its accounting records, and apply the correct treatment to purchases and sales.
Bulgarian VAT reporting is generally monthly. The registered person must maintain purchase and sales ledgers, submit Bulgarian VAT returns, and file supporting reports or VIES declarations where the transactions require them. The exact statutory deadline and filing package should always be checked for the reporting period concerned.
Invoices need the correct legal name, address, UIC, VAT ID, dates, taxable amount, VAT rate or exemption basis, and other mandatory details. Reverse-charge invoices require suitable wording and legal treatment. A note typed by the founder does not override the place-of-supply rules.
Cross-border businesses may also face Intrastat, OSS, customs, import VAT, transfer-pricing, payroll, or corporate income tax reporting. These systems overlap, though they are not interchangeable. An OSS return, for example, does not automatically replace every domestic Bulgarian filing.
The working compliance file should preserve:
- Sales and purchase invoices
- Contracts, orders, and payment evidence
- Transport documents and proof of dispatch
- VIES checks and customer VAT details
- Customs and import records
- Correspondence with suppliers, customers, and the NRA
Documentation is the best defense during an audit. Bulgarian tax officers tend to follow the evidence chain from contract to invoice, payment, delivery, accounting entry, and return. A transaction that exists only as a line in bookkeeping software will receive sharper scrutiny.
Using an inactive or incorrect number can cause several layers of trouble. A customer may reject the invoice. A marketplace may suspend VAT treatment. The NRA may require corrections, assess VAT and interest, or impose statutory penalties. Input VAT can also be challenged where the substantive and documentary conditions are not met.
Registration creates another question that founders often ignore: who owns the monthly process? If the answer is “we’ll look at it when sales increase,” the system is already drifting.
Reliable bookkeeping services in Bulgaria should cover monthly bookkeeping, Bulgarian VAT returns, invoice review, VIES reporting where relevant, and communication with the tax authorities. Ask whether the service is fixed-fee or all-inclusive, what falls outside scope, and whether multilingual support is available. Transparency around responsibilities matters more than a cheap monthly quote.
VAT also affects tax optimization. Recoverable input tax, pricing, customer status, cash flow, and transaction structure can change the real margin. Registration should be modeled alongside the operation, not bolted onto it after company formation.
A Bulgarian VAT number creates monthly accounting responsibilities
After VAT registration, the company needs an organized process for sales and purchase invoices, VAT ledgers, monthly returns, VIES declarations, reverse-charge transactions and communication with the Bulgarian tax authorities. The accounting workflow should be established before the first reporting deadline.
How this Bulgarian VAT guide was prepared
Author
Daniel Malbašić, founder and business consultant at Bulgarian.LLC.
Practical experience
Coordination of Bulgarian company formation, VAT-registration preparation,
bookkeeping setup and compliance support for foreign founders and
internationally active companies.
Source-review method
The guide distinguishes Commercial Register identity data from VAT status
and uses Bulgarian NRA, European Commission and Registry Agency sources
for administrative verification.
FAQ
What is a VAT number in Bulgaria?
A Bulgarian VAT number is the tax identifier assigned by the NRA to a person registered under the Bulgarian VAT Act. It usually contains the prefix BG followed by nine or ten digits.
Is a Bulgarian UIC automatically a VAT number?
No. The UIC or EIK identifies the company in the Commercial Register. It becomes the numeric basis of the Bulgarian VAT ID only after the company receives the relevant VAT registration.
Is the BG prefix always required?
The full VAT identification number uses the BG country prefix. A local record may show only the underlying EIK when identifying the company, but VAT invoices and EU transactions should use the full registered VAT ID.
How can I check a vat number Bulgaria result?
Use the NRA’s official services or the European Commission’s VIES tool. Check the digits, legal name, current status, and search date. Keep evidence when the result supports cross-border VAT treatment.
Can a foreign company obtain a VAT registration number Bulgaria without forming a local company?
Yes, in appropriate circumstances. A foreign entity can register directly when its Bulgarian transactions create an obligation or permitted registration ground. A fiscal representative may be required, especially for certain non-EU applicants.
Does every business need to cross the turnover threshold first?
No. Cross-border services, intra-Community transactions, local supplies by foreign businesses, stock movements, and other statutory events can trigger registration independently of the ordinary domestic threshold.
How long does VAT registration take?
The duration depends on the legal ground, supporting documents, NRA review, and any request for further evidence. Do not plan around a guaranteed approval date unless the procedural position has been reviewed for the specific application.
Are Bulgarian VAT returns filed monthly?
Registered persons generally operate on monthly VAT reporting in Bulgaria. The exact returns, ledgers, VIES declarations, and deadlines depend on the transactions and current legal rules.
Need help obtaining or managing a Bulgarian VAT number?
Bulgarian.LLC can help review the applicable VAT registration ground, prepare the practical application file and organize monthly bookkeeping and VAT compliance for foreign-owned Bulgarian companies.
Conclusion
A vat number Bulgaria search begins with a simple format, BG followed by the relevant Bulgarian identification digits, but it should end with official verification. The UIC proves the entity exists. The NRA registration act and current database status prove its VAT position.
Track taxable turnover, foreign services, EU customers, stock movements, and e-commerce sales before they create a filing problem. VAT registration is followed by monthly accounting records, invoice control, returns, and careful communication with the NRA.
Need help obtaining or managing a VAT number in Bulgaria? Bulgarian.LLC can assist with VAT registration preparation, bookkeeping, VAT reporting and professional consultation for foreign-owned Bulgarian companies.
Daniel Malbašić is a business expert with extensive experience in the field of business consulting, organization and business optimization. His expertise includes market analysis, strategic planning, and implementation of effective business solutions. Daniel is dedicated to helping companies grow and improve their operations, providing them with comprehensive support in making key business decisions.