Can ONJN retroactively reassess slot-machine authorization fees? A reassessment needs a lawful basis under the legislation that applied to the relevant period. Existing authorization decisions, payments, previous inspections and legitimate expectations may support an operator’s position, but they do not automatically override an express statutory recalculation requirement.
Romania’s National Gambling Office (ONJN) faces a difficult question after findings by the Romanian Court of Accounts. What happens when the regulator changes its reading of an annual authorization fee after operators have relied on its earlier decisions and passed compliance inspections?
The question is not only how much tax is involved. It goes to regulatory certainty: can an operator know, at the time of payment, what it legally owes?
The dispute matters most for Romania’s land-based slot-machine industry, where every machine is individually authorized and the fees have risen repeatedly. For the wider framework, see Romania’s ONJN gambling licensing framework.
The dispute in brief
The annual authorization fee for Class A slot machines increased through successive amendments to OUG 77/2009.
| Legislative stage | Annual fee per Class A machine | Relevance |
|---|---|---|
| Earlier framework | €3,600 | Historical amount |
| Government Ordinance 15/2022 | €4,600 | Increased statutory fee |
| Emergency Ordinance 82/2023 | €5,300 | Further increase, central to the dispute |
| Law 141/2025 (applicable in 2026) | €6,000 | Current fee; a separate legislative period |
These are historical and current statutory amounts, not a single fee applicable throughout. Other gambling contributions and charges apply on top. For the 2022 changes see our note on GO 15/2022; for today’s rates see gambling taxes in Romania in 2026.
According to the facts described by operators, ONJN at first applied each new amount to machines authorized after the amendment took effect. Operators with annual authorizations already running kept paying the amounts set in their authorization decisions. Later inspections reportedly accepted those payments and found no shortfall.
The position changed after the Court of Accounts audited ONJN’s 2024 activity. The audit challenged how ONJN had treated fees for machines whose annual authorization was already running when the law changed. It estimated about RON 116 million in slot-machine authorization fee differences not declared or paid after OUG 82/2023 took effect.
That figure is an audit finding about potential public revenue. It is not a final, enforceable debt established against each affected operator. It should also not be confused with the separate audit that found RON 78.9 million in undeclared online authorization fees for 2022–2023.
ONJN then reconsidered its interpretation and began checking periods operators had understood to be settled. That raises three separate legal questions:
- Did the legislation require the higher fees to apply immediately to existing authorizations?
- Could ONJN reopen periods it had previously examined and accepted under its earlier interpretation?
- What remedies are available if the regulator or tax authority later asserts additional liabilities?
Each must be answered on its own.
1. An annual authorization fee is not necessarily twelve separate taxes
Article 14(2)(b) of OUG 77/2009 governs payment of the relevant authorization fees. For slot machines, the obligation is expressed as an annual authorization fee, although it may be paid in monthly instalments in advance. The framework has also allowed the annual amount to be paid up front.
That distinction matters. Paying an annual liability monthly does not necessarily turn it into twelve independent tax obligations. An operator can argue that the authorization, the fee calculation and the payment schedule form one annual legal relationship. On that reading, the amount is fixed when the authorization is granted, subject only to adjustments the law expressly permits.
The argument must still be tested against the precise wording of each amending law. Being annual does not, on its own, make the amount immune from change during the year.
2. Did the 2022 and 2023 increases apply to existing authorizations?
This is the central substantive issue.
GO 15/2022 raised the annual Class A fee to €4,600. OUG 82/2023 raised it to €5,300.
Operators argue that a higher fee introduced after an annual authorization was issued should not automatically change the amount already set for the rest of that authorization’s term. The argument rests on the nature of the annual fee, the individual authorization decision and the absence of a sufficiently clear basis for recalculating an existing obligation.
The contrary reading treats the amending statute as applying the higher charge from its effective date to authorized operations that were already running.
So the dispute is about the temporal application of the statute, not about whether the regulator may collect taxes at all.
Why transitional provisions matter
Transitional rules decide how a new law affects legal relationships created before it entered into force. An express provision requiring existing authorizations to be recalculated changes the analysis sharply. An amendment without one calls for closer reading of its wording, the nature of the charge and general legal principles.
Law 141/2025 is a useful comparison. Its Article LXIII(2) expressly addresses annual authorizations already valid when the new rules take effect and requires the fee to be recalculated for their remaining period. That shows the legislature can regulate existing authorizations expressly when it wants to.
It does not, by itself, decide how the 2022 and 2023 amendments should be read. Nor should the 2025 rule be applied backward to earlier authorization periods. The analysis must be anchored in the law in force during the disputed period, not the law in force when the inspection takes place.
3. The legal effect of ONJN’s individual authorization decisions
An ONJN authorization decision is an individual administrative act. It identifies the regulated activity, the authorized equipment and the conditions of authorization. Where it states the fee for a given authorization period, it is important evidence of what the operator was told to pay.
Individual administrative acts produce legal effects while they remain valid, subject to the rules on modification, revocation and judicial review. An operator can therefore argue that ONJN cannot simply ignore an existing decision when calculating alleged historical shortfalls. The argument is stronger where:
- the fee was expressly stated in the authorization documents;
- the operator paid in line with those documents;
- ONJN reviewed the payments;
- earlier inspections recorded no outstanding differences;
- the operator’s circumstances did not materially change.
Even so, an administrative decision must be read together with the statute under which it was issued, and it cannot necessarily override a mandatory statutory tax obligation. The real question is whether the higher charge applied to that authorization period and, if it did, through what lawful procedure the obligation could be established.
An ONJN decision is a substantive legal factor, not an automatic exemption from legislation that applied to the period.
4. Can ONJN change its interpretation of the law?
Yes. A public authority may find that its earlier practice did not match the law, especially after an audit or a court decision, and it may then have a duty to correct that practice.
Applying the corrected interpretation to past periods is a separate question. Legal certainty requires rules and administrative conduct to be reasonably predictable, so that businesses can organize their affairs in reliance on valid decisions of the competent authority. An interpretation that changes years later can engage legitimate expectations, particularly where the original reading was consistently communicated and followed.
Legitimate expectations are not unlimited
Legitimate expectations do not necessarily stop an authority from collecting a tax that was clearly due under the law, and a previous inspection does not make every historical period immune from lawful reassessment. The strength of an operator’s case depends on what the authority represented, which documents it issued, whether the original practice was legally defensible and which verification powers the statute gives.
The question is not whether ONJN may ever correct a mistaken interpretation. It is whether that correction can lawfully impose new consequences on operators who acted under the authority’s documented decisions and established practice.
5. Why earlier compliance inspections matter
Some operators paid the amounts ONJN indicated and later passed inspections with no payment differences found. Those inspection records are potentially important evidence. They can show that operators did not invent a favorable interpretation or conceal information, but acted within the regulator’s own administrative framework.
Where the same documents were reviewed before and no shortfall was found, reopening the matter only because of a revised interpretation raises questions of procedural fairness and of the stability of administrative relationships.
The consequences depend on what the earlier inspection actually established. A report recording no irregularities is not necessarily equivalent to a final tax assessment with the effect of a fiscal decision. Its scope, its legal status and the rules on repeat inspections all need to be examined.
A clean earlier inspection is important evidence. It is not necessarily an absolute bar to every later reassessment.
6. What authority does the Court of Accounts have?
Article 140 of the Romanian Constitution gives the Court of Accounts control over the formation, administration and use of public financial resources. It can examine whether a public institution properly administered revenue due to the state, and in doing so it may interpret the relevant legislation in order to assess the audited institution.
Here, the findings concern how ONJN applied and monitored gambling authorization fees. An adverse audit conclusion can require ONJN to investigate and take corrective measures. The August 2026 follow-up recorded five-year retrospective controls among those measures; see how the audit fits into the 2026 slot-machine collapse.
The audit does not, however, operate as an individual tax assessment against each operator. The two institutions have different functions: ONJN administers the gambling framework under OUG 20/2013 and OUG 77/2009, and an individual operator’s enforceable position depends on the competent authority’s acts and the applicable procedure.
Does the audit interpretation bind operators directly?
Not merely because it appears in an audit report. The report can influence or require corrective action by the audited institution, but the existence and amount of a specific operator’s debt must still be established through the proper mechanism. The difference between an audit finding about public administration and an enforceable individual liability is fundamental.
7. Why the wording of an ONJN inspection report matters
There is an important procedural difference between sectors. In some remote-gambling investigations, ONJN inspection documents reportedly identified authorization fee differences and expressly required operators to file corrective declarations and pay. For slot-machine operators, the reports reportedly identified differences without expressly imposing an obligation to declare or pay. That difference can affect whether, and when, the document can be taken to court.
A report that only records facts. Where a document records findings but does not change rights or impose obligations, the authority may argue it is preparatory or evidentiary rather than an immediately challengeable administrative act.
A report that produces direct legal effects. Where a report imposes payment, filing or other binding requirements, it may qualify as an administrative act open to review under Law 554/2004, subject to the jurisdictional and procedural rules.
Substance beats the title. Calling a document a “report” or “minutes” does not settle its legal character; its content, statutory basis and effects do. Do not assume a report is harmless because it contains no payment instruction, and do not assume every finding can be challenged straight away through the same route. Choose the remedy after establishing what the document actually does.
8. What happens if a tax reassessment is issued?
An ONJN inspection may be followed by further action, and alleged fee differences could be reflected in a later act establishing an individual liability. If that happens, examine:
- the competent issuing authority;
- the authorization periods covered;
- the statutory rate applied to each period;
- how the alleged shortfall was calculated;
- the authorization decisions ONJN originally issued;
- earlier inspections and payment records;
- the legal basis for the reassessment;
- applicable limitation periods;
- interest, penalties and other accessories;
- the administrative and judicial remedies available.
The general fiscal contestation framework can apply to qualifying tax administrative acts, but the right remedy depends on the type of act and the legislation governing the obligation. Where the Tax Procedure Code (Law 207/2015) applies, the general deadline to contest a tax administrative act is 45 days from notification, subject to statutory exceptions. Other acts and enforcement measures can have different procedures and shorter deadlines, so review every notification immediately rather than waiting for the next step.
9. Can a reassessment be challenged?
Potentially, yes. The arguments available depend on the documents and the law:
| Ground | The question to answer |
|---|---|
| Statutory interpretation | Did the 2022 or 2023 amendments require fees already in force to be recalculated? |
| Temporal application | Does the calculation extend a new rule to an earlier period, or was the new fee expressly applicable to the rest of an ongoing authorization? |
| Legal certainty | Could the operator reasonably identify the amount when payment fell due? |
| Individual decisions | What fee did the ONJN decisions state, and were they later amended or annulled? |
| Legitimate expectations | Did ONJN consistently instruct operators to use a given fee and confirm compliance on inspection? |
| Procedural legality | Was the authority entitled to reopen the periods, and was the liability established by the proper procedure? |
| Amount and limitation | Is the calculation right, and is the claim still enforceable under the limitation rules? |
A strong challenge addresses the statutory text and the evidence. It does not rest only on the argument that the operator was previously considered compliant.
10. The 2025 and 2026 changes are a separate layer
This dispute concerns historical periods, but it sits inside a broader reset. Law 141/2025 substantially changed gambling taxation: the Class A fee is now €6,000 a year per machine, before other machine-related charges, and the law includes the express recalculation rule discussed above. For land-based venues, OUG 7/2026 added local authorization requirements; see Romania’s 2026 slot-machine authorization changes and local authorization requirements under OUG 7/2026.
These are separate legal and commercial obligations. Keep distinct records for:
- historical authorization fees disputed after the audit;
- statutory charges applicable after the 2025 amendments;
- current ONJN authorization and renewal obligations;
- the local authorization conditions that apply in 2026.
A historical dispute should not be confused with noncompliance under current law, and current rates should not be used to recalculate past periods without a proper legal basis. For the recurring calendar, see Romanian gambling tax and reporting deadlines.
11. What slot-machine operators should do now
Preserve and organize the evidence, by machine and authorization period rather than only in general accounting folders.
| Document | Why it matters |
|---|---|
| ONJN authorization decisions | The terms and fee stated for each machine |
| Machine authorization register | Links each device to its authorization period |
| Payment orders and bank statements | The amounts actually paid |
| Earlier inspection reports | ONJN’s previous findings |
| Correspondence with ONJN | The interpretation the regulator communicated |
| Later inspection reports | The new findings and alleged differences |
| Legislative versions in force | The law applicable to each disputed period |
| Accounting and tax records | Reconciliation of declared and paid amounts |
| Administrative or fiscal decisions | Available challenge routes and deadlines |
Build an individual exposure schedule. For each device, record the annual authorization period, the statutory rate at the time, the amount in the authorization decision, the payments made and the additional sum alleged. Then identify the legal basis asserted for the difference. That gives a clear foundation for legal advice, accounting treatment and any challenge.
Do not assume a finding is already payable. Establish the legal effect of the document first. A regulatory finding and an enforceable payment obligation are not always the same thing.
Do not ignore a document described as informational. Some documents affect procedural rights or trigger later decisions. Check response periods as soon as a document is notified.
Conclusion: tax certainty cannot depend on the regulator’s next interpretation
The Court of Accounts has an important role in identifying failures of public revenue administration, and ONJN must take audit findings seriously and apply the law correctly. Those responsibilities do not remove the need to respect legal certainty, valid administrative acts and operators’ procedural rights.
The crucial distinction is between enforcing a tax obligation clearly imposed by legislation and creating an apparent historical shortfall through a revised reading of decisions under which operators complied. Those are different legal situations, and a dispute spanning several authorization periods cannot be resolved by assuming that either the regulator or the operator must always be right.
The answer lies in the statutory wording, the individual authorization decisions, the timing of the amendments and the process used to establish the alleged debt.
A regulator may correct its interpretation of the law. Whether it can impose the financial consequences of that correction on operators who complied with its own valid decisions is a separate legal question. A compliant operator should be able to know what it owes when the obligation falls due, not discover years later that its compliance was provisional. At the same time, a previously accepted payment cannot override a clear statutory requirement. That tension is why the ONJN reassessment dispute deserves careful legal scrutiny.
How Szilaghi Consulting can help
Szilaghi Consulting advises gambling operators and suppliers on licensing, corporate structuring, regulatory compliance and dealings with Romanian authorities. Our Romanian legal team can review ONJN authorization records, reconstruct historical payment obligations, assess regulatory findings and coordinate challenges with your tax advisers. See our gambling regulatory and tax-dispute advisory and, for operators, Romania Class I licensing.
If you face historical fee differences, get a document-specific assessment before accepting a recalculation or choosing a litigation strategy. Request an ONJN authorization review.
This analysis reflects the law as of 19 October 2026 and the circumstances reported by operators. The precise inspection documents, disputed periods and any individual administrative or fiscal decisions must be reviewed before these conclusions are applied to a particular operator. It is general information, not an individual legal opinion.
