Tax disputes

A tax dispute lawyer in Bulgaria: NRA audits and assessment appeals.

Legal representation once the National Revenue Agency (NRA) has opened an audit, issued a revision act, or made an assessment you believe is wrong — from the audit itself through the administrative appeal and, where necessary, court. No outcome is promised; the scope and fee are agreed in writing before any work begins.

Written and reviewed by Adriana Melnikliyska, Attorney-at-law, Blagoevgrad Bar No. 1900000227. Last reviewed 27 September 2026.

Short answer: "NRA Bulgaria" usually means one of two very different things — routine tax compliance and reporting to the National Revenue Agency, or an actual audit, revision act or assessment you need to respond to or appeal. This page is about the second: what triggers an NRA audit, how the audit and revision process actually works under the Tax and Social Insurance Procedure Code, what evidence and documentation matter during it, and how an administrative appeal and, if necessary, a court challenge to an assessment actually proceed. It does not cover ongoing bookkeeping, VAT filing, or tax-residency planning, which are separate, compliance-side services.

Who this page is for

This page is for a business or individual who is currently facing, or has reason to expect, an NRA audit or an already-issued revision act or assessment they consider wrong, excessive, or procedurally flawed. It covers the defence and appeal side of a tax matter: responding to an audit, challenging the findings in a revision report, appealing a revision act through the administrative and court stages, and making sure the evidence and documentation that actually matter are in order before and during that process.

What this page does not cover: routine, ongoing tax compliance — monthly VAT filings, payroll tax administration, standard corporate tax returns, or tax-residency and structuring planning for a business or individual with no active dispute — is not within this page's scope. That ongoing compliance work is handled by accounting and business-services providers such as Bulgarian.LLC, not by this page, which is written by a practising attorney and covers only the dispute, audit-defence and appeal side of a tax matter once the National Revenue Agency has, or is expected to, take a position you need to challenge.

What actually triggers an NRA audit

An NRA audit (данъуна ревизия) can be triggered by a range of factors, and in practice a taxpayer is rarely told the specific reason in advance. Common triggers include inconsistencies between declared income or VAT figures and third-party data the NRA holds (bank information, customs data, information exchanged with other tax authorities), a pattern flagged by the agency's own risk-analysis criteria, a routine periodic check applied to a sector or type of taxpayer, a specific transaction that stands out in scale or structure, or a referral arising from another agency's own investigation. An audit can also follow directly from a VAT refund claim, since refund claims are commonly checked before being paid out. Because the actual trigger is rarely disclosed, the practical starting point on receiving an audit notice is not to guess why it started, but to focus immediately on what is actually being examined and what documentation will be needed to support the position already taken in the relevant returns.

How the audit and revision process works

The process is governed principally by the Tax and Social Insurance Procedure Code (Данъцно-осигурителен процесуален кодекс), which sets out both how the National Revenue Agency conducts an audit and how a taxpayer can challenge the result.

Opening the audit. The NRA issues an order initiating the audit, defining its scope — which taxes, which periods, and which taxpayer are covered. The audit's actual scope, as stated in that order, matters: findings outside the stated scope can themselves be challenged.
Document and information requests. During the audit, the NRA requests accounting records, invoices, contracts, bank statements and other supporting documentation. How complete and organised the response is at this stage materially affects what the auditors conclude — gaps are often resolved against the taxpayer, not in their favour, simply because nothing was produced to fill them.
Revision report (ревизионен доклад). The auditors issue a written report setting out their proposed findings. The taxpayer has an opportunity to respond to this report before the final act is issued — a stage that is easy to under-use, but is often the last real opportunity to correct a factual misunderstanding before it hardens into a formal assessment.
Revision act (ревизионен акт). The competent revenue official issues the formal revision act, stating the assessed tax, interest and any penalty, and the reasoning behind it. This is the document that actually creates an enforceable obligation, and it states the deadline for challenging it — a short, strictly enforced period that must be confirmed from the act itself, not assumed from a general description.
Administrative appeal. The revision act can be appealed administratively, within the deadline stated on the act, to the competent appellate authority within the revenue administration. This stage is resolved on the papers and any additional evidence submitted, without a full court hearing.
Court appeal. If the administrative appeal does not resolve the matter, or is decided against the taxpayer, the revision act can be challenged before the competent administrative court, and, on further appeal, before the Supreme Administrative Court on matters of law.

Throughout this sequence, every deadline is set out in the specific document that triggers it — the audit order, the revision report, the revision act itself — and needs to be read and acted on directly from that document. This page does not state a specific number of days for any of these steps, because doing so risks stating a deadline that has since changed or that does not apply to the specific type of act in question; the actual, currently applicable deadline is confirmed the moment a document is received, and calendared immediately.

Evidence and documentation that actually matter

What decides most tax disputes is not a clever legal argument about the tax law in the abstract, but whether the taxpayer's own documentation actually supports the position taken in the returns under review. The categories that matter most, in practice, include:

Complete accounting records for the periods under review — general ledger, VAT ledgers, and supporting schedules, not just the filed returns themselves.
Invoices and underlying contracts for the specific transactions being questioned, matched to actual delivery, performance or payment evidence rather than the invoice alone.
Bank statements covering the relevant accounts and periods, since a mismatch between declared figures and actual bank activity is one of the most common findings in an NRA audit.
Correspondence with counterparties that supports the commercial reality of a transaction being questioned — particularly relevant where the NRA is querying whether a transaction actually took place as described, or whether a counterparty itself was a genuine, operating business.
Any prior correspondence with the NRA on the same or a related question, including any earlier ruling, ordinary correspondence, or a binding tax opinion, where one was obtained.
A clear, written explanation of the commercial rationale behind any transaction or structure the audit is questioning — auditors and, later, courts weigh a documented business reason for a transaction differently from a transaction with no discernible purpose beyond a tax outcome.

Assembling this evidence early — ideally at the audit stage, before the revision report is issued — is consistently more effective than trying to reconstruct it after a revision act has already been issued and the appeal clock is already running.

Lawyer or accountant: who does what

A recurring source of confusion in this area is that most pages a search for "NRA Bulgaria" or a tax audit actually surfaces are published by accounting and tax-advisory firms, by international directories, or by institutional sources describing Bulgarian tax policy in general terms — useful for understanding the system, but not the same as representation once an actual dispute exists. An accountant is usually essential during an audit, because the accounting records themselves are the evidence the dispute turns on, and ongoing compliance work is squarely an accountant's role. Representation in the administrative and court appeal stages — framing the legal argument, meeting the appeal deadlines, and appearing before the appellate authority and the administrative courts — is legal representation and is this page's actual scope. On most real disputes, the accountant who prepared the underlying records and the attorney handling the appeal work together, each contributing the part of the matter suited to their role, rather than either one attempting the other's job.

The boundary with ongoing tax compliance

To be explicit about a boundary this site takes seriously: routine, ongoing tax compliance — monthly and annual filings, VAT registration and reporting, payroll tax administration, and forward-looking tax-residency or structuring planning where no dispute yet exists — is handled by business-services and accounting providers such as Bulgarian.LLC, which offers those services as part of its ongoing operational support to companies it works with. This page, and this practice, do not compete with that service and do not offer ongoing bookkeeping or compliance filing. Where an NRA audit or assessment is questioning past compliance handled by another provider, that provider's own records are usually central evidence in the dispute, and coordinating directly with them — rather than working around them — is normally the more effective approach for the client.

Types of assessment this covers

"Tax dispute" is not one single procedure — the underlying tax matters, and it changes what evidence and arguments actually matter. The table below sets out, in general terms, how the main categories differ.

Assessment type	What is typically in dispute	What matters most
Corporate income tax	Deductibility of expenses, transfer-pricing adjustments between related companies, recognition of income or losses	Contemporaneous documentation showing the commercial reason for a transaction, and consistency with prior filings
VAT	Denied input-tax credit, a refused or delayed VAT refund, questioned intra-EU supply documentation	Invoices matched to actual delivery or performance evidence, and transport/customs documentation for cross-border supplies
Personal income tax	Undeclared income, tax residency status, benefits-in-kind treatment	Bank records, employment or engagement documentation, and evidence of actual physical presence where residency is in question
Social security contributions	Reclassification of a contractor as an employee, disputed contribution base	The actual working arrangement in practice, not just the label used in the contract

Which category applies, and which of these evidentiary points actually decides the case, depends entirely on what the revision report or revision act states — this table is a starting orientation, not a substitute for reading the specific document received.

Interest and penalties

A revision act that assesses additional tax typically also assesses statutory interest for late payment, calculated from when the tax was originally due, and may include an administrative penalty depending on the nature of the finding. Interest is generally treated as a consequence of the underlying tax finding rather than a separately arguable point — if the underlying assessment is successfully reduced or overturned on appeal, the interest calculated on it is adjusted accordingly. A penalty, by contrast, can sometimes be challenged on its own terms even where the underlying tax finding is not seriously in dispute, particularly where the alleged conduct does not actually meet the standard the penalty provision requires. Both figures are stated in the revision act itself and should be checked individually rather than treated as a single combined number.

Documents to have ready

The audit order or notice, and any revision report or revision act already received, with the date each was served.
The tax returns and periods actually under review.
Full accounting records for those periods, including underlying invoices and contracts for any specific transaction being questioned.
Bank statements for the relevant accounts and periods.
Any prior correspondence with the NRA on the same question, including any existing ruling or binding opinion.

Because appeal deadlines run from the date a document is served, the single most time-sensitive thing to do on receiving a revision act is to confirm that date and the deadline stated on the document itself, and to send it for review immediately rather than after gathering every other document first.

Realistic timing and cost

How long a tax dispute takes, and what it costs, depends on the complexity of the audit, the amount and type of tax in question, how well-documented the underlying position already is, and whether the matter is resolved at the administrative appeal stage or proceeds to court and, potentially, the Supreme Administrative Court. A straightforward, well-evidenced dispute over a single, narrow finding is a different matter from a multi-year audit covering several types of tax with disputed facts throughout. No fixed timeline or cost figure is stated on this page; the professional fee and any expected third-party costs (court fees, expert accounting evidence where needed) are set out in writing, matched to the actual scope, before work begins. Since Bulgaria adopted the euro on 1 January 2026, any assessed tax, interest, penalty and fee figures are stated and paid in euro.

What this process does not do

To be direct about the limits of this service: an appeal does not guarantee that an assessment will be reduced or overturned, does not suspend the obligation to pay in every case (whether and how payment or enforcement is suspended pending appeal depends on the specific procedural stage and any request made), and does not move faster than the administrative and court timetables allow. This page does not state, and no assessment communicated in advance states, that a specific outcome, refund, or reduction will be achieved. No same-day or emergency guarantee is made, and no work begins on a matter before a written scope and fee are agreed — though where a deadline is genuinely close, that urgency is reflected in how quickly the initial review is turned around, not in a shortcut around the scoping process itself.

Fees

Tax dispute fees depend on the scope: reviewing and responding to a revision report is a different piece of work from representation through an administrative appeal and a full court challenge. The professional fee and any expected third-party costs are set out in writing before any work begins — see how fees are set. No figure is stated on this page, and no free initial review is offered.

Frequently asked questions

What is the difference between NRA tax compliance and a tax dispute?

Compliance is the ongoing work of filing accurate returns and paying tax correctly on time, generally handled by an accountant or business-services provider. A tax dispute arises once the NRA has audited, questioned, or formally assessed a position differently from what was declared, and needs to be challenged or defended — that is this page's scope.

What usually triggers an NRA audit?

Inconsistencies between declared figures and third-party data the NRA holds, the agency's own risk-analysis criteria, sector-wide periodic checks, a specific unusual transaction, or a VAT refund claim being checked before payment are all common triggers. The specific reason for any individual audit is rarely disclosed in advance.

How much time do I have to appeal a revision act?

The deadline is stated directly on the revision act itself and is short and strictly enforced. It should be read and calendared the moment the act is received, and confirmed against the current text of the Tax and Social Insurance Procedure Code rather than assumed from a general description.

Do I need a lawyer during the audit itself, or only for the appeal?

An accountant is usually essential throughout the audit because the accounting records are the core evidence. Legal representation is most central once a revision report or revision act sets out findings that need to be challenged, though early legal input during the audit can help shape what evidence is assembled before that stage.

Can you help with ongoing VAT compliance or tax-residency planning?

No. That is ongoing compliance and planning work, handled by accounting and business-services providers. This page and this practice cover the dispute, audit-defence and appeal side of a tax matter once the NRA has taken, or is expected to take, a position that needs to be challenged.

Does appealing a revision act stop the NRA from collecting the assessed tax?

Not automatically in every case. Whether and how collection or enforcement is suspended pending an appeal depends on the specific procedural stage and any request made as part of the appeal. This needs to be confirmed against the actual act and the current procedural position rather than assumed.

What if I disagree with the revision report before the final act is issued?

The revision report stage gives an opportunity to respond before the revision act is finalised. Using that opportunity effectively — with organised documentation and a clear written response — is often the last real chance to correct a factual misunderstanding before it becomes a formal, appealable act.

Can a tax dispute go beyond the administrative appeal?

Yes. If the administrative appeal does not resolve the matter, the revision act can be challenged before the competent administrative court and, on a further, more limited basis on points of law, before the Supreme Administrative Court.

What documents matter most in defending against an NRA finding?

Complete accounting records, the underlying invoices and contracts for the specific transactions in question, matching bank statements, and, where relevant, a clear written explanation of the commercial rationale behind a transaction the audit is questioning. Gaps in documentation are consistently resolved against the taxpayer.

How much does a tax dispute lawyer cost in Bulgaria?

It depends on the scope: responding to a revision report is a smaller piece of work than representation through a full administrative and court appeal. The fee is set out in writing, matched to the actual scope, before any work begins.

Is there a free consultation before I decide whether to appeal?

No. The written review of the audit or revision act and the applicable deadline is the paid first step this practice offers, precisely because a tax deadline is usually too short and too consequential to assess informally before any work begins.

I only became a Bulgarian tax resident recently and did not declare income earned abroad before that — is that likely to trigger an audit?

Undeclared foreign income is one of the more common audit triggers the NRA identifies through automatic information exchange with other tax authorities, particularly once someone becomes a Bulgarian tax resident. Whether a specific period of foreign income needed to be declared, and what the actual exposure is, depends on your residency status and the countries involved, and should be reviewed rather than assumed either way.

Does staying registered as a taxpayer in my previous country as well as Bulgaria cause a problem with the NRA?

It can create exactly the kind of inconsistency between declared figures and third-party data that commonly triggers an audit, since two tax authorities may both treat you as resident for the same period. This is a residency and compliance question best resolved before a dispute arises, though where an audit has already started for this reason, it is assessed like any other NRA finding.

Primary sources

Article numbers and current effective deadlines should always be verified against the consolidated text in force at the time a specific act is received.

This page describes the general audit, revision and appeal framework. It does not state an assessed amount, a deadline or an outcome for any specific matter, which depend on the actual document received and must be confirmed once a matter is reviewed.