Process: 761/2014-T

Date: June 30, 2015

Tax Type: Valor do pedido:

Source: Original CAAD Decision

Summary

This arbitration case addresses the critical issue of IUC (Unique Circulation Tax) subjective incidence when vehicle ownership transfers occur but registration updates lag behind. The applicant sold a vehicle on July 7, 2011, delivering keys and documents, but IUC for 2011 was assessed in their name as the registered owner. The core legal dispute centers on Article 3(1) of the Unique Circulation Tax Code (CIUC), which defines taxable persons as those 'in whose names the vehicles are registered.' The applicant argued that registration creates merely a rebuttable presumption, that actual ownership determines tax liability, and that the Tax Authority must ascertain the legitimate owner rather than rely solely on registration data. The Tax Authority countered that the legislator intentionally established registration as the definitive criterion for ownership - not a presumption but an express legal definition - distinguishing this from civil law ownership concepts. The AT emphasized that allowing proof contrary to registration would undermine legal certainty, efficiency of the tax system, and constitutional principles of confidence and proportionality. The respondent also raised a procedural exception of untimeliness, arguing the arbitration request was filed outside the legal deadline based on evidence that IUC had already been paid in tax enforcement proceedings. This case exemplifies the tension between civil law ownership rights and administrative tax law's need for clear, verifiable criteria based on public registries. The excerpt does not include the arbitral tribunal's final decision on either the procedural exception or the substantive merits.

Full Decision

ARBITRAL DECISION

A – REPORT

  1. A…, taxpayer no. …, resident at [address] …, … – …, Lisbon, came to request the constitution of an arbitral tribunal, pursuant to the provisions of articles 2, no. 1, (a) and 10, nos. 1 and 2 of the Legal Framework for Tax Arbitration, provided for in Decree-Law 10/2011, of 20 January, hereinafter designated "RJAT" and of articles 1 and 2 of Ordinance no. 112-A/2011, of 22 March, with a view to the declaration of illegality of the act of assessment of Unique Circulation Tax, relating to the year 2011 (although the request is formulated in the sense that such assessment should be corrected and issued in the name of the taxable person and actual owner on the date of registration), with the Tax and Customs Authority being requested (hereinafter designated as "AT").

  2. With the request for constitution of a singular arbitral tribunal having been admitted, and the applicant not having opted for the appointment of an arbitrator, pursuant to the provisions of subparagraph (a) of no. 2 of article 6 and subparagraph (b) of no. 1 of article 11 of the RJAT, in the wording introduced by article 228 of Law no. 66-B/2012, of 31 December, the Deontological Council appointed the undersigned as arbitrator.

The parties were notified of such appointment and did not manifest the intention to refuse the appointment of the arbitrator, pursuant to the combined provisions of article 11, no. 1, subparagraphs (a) and (b) of the RJAT and articles 6 and 7 of the Code of Ethics, and in accordance with the provision of subparagraph (c) of no. 1 of article 11 of the RJAT, in the wording introduced by article 228 of Law no. 66-B/2012, of 31 December, the arbitral tribunal was constituted on 19-01-2015.

  1. Notified, the AT came to present a response in which it raised the exception of lapse, on grounds of untimeliness of the request for constitution of the arbitral tribunal.

  2. The applicant was notified to attach documents to the proceedings, which it did.

  3. It was dispensed with, with the consent of the parties, the holding of the meeting provided for in article 18 of the RJAT, as well as the presentation of submissions.

  1. The applicant requests that the illegality and consequent annulment of the act of assessment of the Unique Circulation Tax relating to the year 2011 and concerning the motor vehicle with registration plate …-…-…, be declared, alleging in summary:

a) To have been the owner of the vehicle with registration plate …-…-…, until 07-07-2011.

b) The day on which, as seller, it entered into a contract of sale concerning the same, having then been delivered the respective keys and documents.

c) Thus, the applicant is not the taxable person of the IUC in 2011, that is, the responsibility for payment of the tax does not fall upon the applicant.

d) The vehicle is registered in the name of the current owner, but the date of registration does not correspond to the date of acquisition of the right of ownership, which generated the assessment of IUC in the name of the applicant.

e) If the current owner acquired the vehicle before the date of registration, then he is the taxable person of the tax, the assessment of IUC of 2011 being vitiated by a defect of illegality.

f) The elements of registration are a mere presumption, which necessarily admits proof to the contrary.

g) The AT cannot disclaim its responsibility in the assessment, taking shelter in the data of the motor vehicle registration; since the subjective scope of the tax falls upon the owner, then it falls to the AT, in its capacity as the assessing entity, to ascertain the legitimate owner and to demand from him the payment of the tax.

h) The contract entered into between two persons, valid and effective, cannot be devalued or reduced to dead letter. With the delivery of the thing, all parties assumed the due effects: the former owner assumed that he lost the ownership and the new owner assumed himself as owner! And who pays the IUC is the owner.

  1. For its part the respondent came in response to allege, in summary:

a) The applicant does not prove the dates of notification of the assessments of the tax or even the dates set for the accomplishment of the voluntary payment of the same.

b) The only document attached to the proceedings and relating to the contested assessment is the proof of payment of IUC in tax enforcement proceedings, from which it can be concluded that the period for voluntary payment of the tax had long since ended.

c) The request for constitution of the Arbitral Tribunal should, therefore, be considered untimely.

d) The tax legislator in establishing in article 3, no. 1 who are the taxable persons of the IUC established expressly and intentionally that these are the owners (or in the situations provided for in no. 2, the persons therein named), considering as such the persons in whose names the same are registered.

e) It emphasizes that the legislator did not use the expression "are presumed", as it could have done, for example, in the following terms: the taxable persons of the tax are the owners of the vehicles, being presumed as such the natural or legal persons, of public or private law, in whose names the same are registered.

f) The tax norm is replete with provisions analogous to that enshrined in the final part of no. 1 of article 3, in which the tax legislator, within its freedom of legislative configuration, expressly and intentionally enshrines what should be considered legally, for purposes of taxable base, of exemption, of determination and of periodization of taxable profit, for purposes of residence, of location, among many others.

g) The legislator established expressly and intentionally that should be considered as such (as owners or in the situations provided for in no. 2, the persons therein named) the persons in whose names [the vehicles] are registered, because it is this interpretation that preserves the unity of the legal-tax system.

h) It is a clear option of legislative policy adopted by the legislator, whose intention, within its freedom of legislative configuration, was that, for purposes of IUC, should be considered owners, those who as such appear in the motor vehicle registration.

i) Even admitting that, from the point of view of the rules of civil law and of registration, the absence of registration does not affect the acquisition of the quality of owner and that registration is not a condition of validity of contracts with real effectiveness, as established in the CIUC (which in the case in question constitutes special law, which, under the general terms of law derogates from the general norm), the tax legislator intended expressly and intentionally, that should be considered as owners, tenants, acquirers with reservation of ownership or holders of the right of purchase option in long-term hire, the persons in whose names the vehicles are registered.

j) In light of a teleological interpretation of the regime enshrined throughout the Unique Circulation Tax Code, the interpretation propounded by the applicant in the sense that the taxable person of the IUC is the actual owner, regardless of not appearing in the motor vehicle registration, the registration of such quality, is manifestly wrong, insofar as it is the very ratio of the regime enshrined in the Unique Circulation Tax Code that constitutes clear proof that what the tax legislator intended was to create a Unique Circulation Tax based on the taxation of the owner of the vehicle as it appears in the motor vehicle registration.

k) The interpretation conveyed by the applicant shows itself contrary to the Constitution, insofar as it violates the principle of confidence and legal certainty, the principle of efficiency of the tax system and the principle of proportionality.

l) In any event, it is certain that in order to set aside the quality of owner of the vehicle in question and, consequently, the subjective scope of the IUC, the applicant would have had to make suitable proof of the constitutive facts of the right which it alleges in the arbitral proceeding.

m) The proof presented by the applicant is not, by itself, sufficient to effectuate conclusive proof of the transmission of the same.

  1. The Arbitral Tribunal was regularly constituted and is materially competent.

The parties enjoy judicial personality and capacity and are legitimate (articles 4 and 10, no. 2, of the same instrument and article 1 of Ordinance no. 112-A/2011, of 22 March).

The proceedings do not suffer from nullities.

B. DECISION

  1. MATTERS OF FACT

1.1. PROVEN FACTS

The following facts are considered proven:

a) The applicant appeared in the motor vehicle register as owner of the vehicle with registration plate …-…-…, until 07-08-2011.

b) In accordance with the assessment of IUC relating to the year 2011, the applicant proceeded to payment of the tax on 26-09-2014.

c) The applicant presented, on 05-11-2104, the request for arbitral pronouncement which gave rise to the present proceedings.

1.2 The facts were given as proven on the basis of documents attached to the proceedings by the applicant.

1.3 UNPROVEN FACTS

There are no facts given as unproven with relevance for the appraisal of the request.

1.4 THE LAW

The AT invokes, in its pleadings, that the request for constitution of the arbitral tribunal is untimely.

Question which should be appraised preliminarily.

In accordance with what is stipulated in article 10, no. 1, (a) of the RJAT, the request for constitution of the arbitral tribunal should be presented within a period of 90 days, counted, with respect to the acts capable of autonomous challenge, from the facts foreseen in nos. 1 and 2 of article 102 of the CPPT.

In the case, from the end of the period for voluntary payment of the tax liabilities legally notified to the taxpayer.

In the case of IUC the assessment should, in light of the provisions of nos. 2 and 3 of article 16 of the CIUC, be effected through self-assessment or at any tax office, by request of the taxable person who is not covered by the obligation provided for in no. 9 of article 19 of the general tax law (obligation which does not cover the present applicant).

Given that no. 2 of article 17 provides that the assessment and payment of the tax should be effected until the end of the month in which it becomes due, in accordance with no. 2 of article 4 of the same instrument (date of anniversary of the date of registration).

Applied the precepts having reference to the case in question, it results that the IUC should have been assessed and paid, by initiative of the owner of the motor vehicle, until 31-07-2011.

Which, is indisputable, did not happen.

Article 18, no. 2 of the CIUC provides that in the case of failure or delay of assessment attributable to the taxable person, or in the case of error, omission, lack or any other irregularity which prejudices the collection of the tax, the Directorate-General of Taxes proceeds to the official assessment on the basis of the elements at its disposal, notifying the taxable person to, within the period of 10 business days, proceed to the respective payment.

That is, in the absence of assessment and payment by the taxpayer, the AT promotes the official assessment of the IUC and notifies the taxpayer to proceed to payment of the respective tax within the period of ten business days.

After such period has elapsed without the tax being shown to be paid, a certificate of debt is issued which serves as the basis for the institution of the tax enforcement proceeding [article 162, (a) of the CPPT].

Having made such considerations, we have that the applicant sustains itself on the payment of the IUC in enforcement proceedings, as the determining temporal element for the presentation of the present request.

Given that such payment is irrelevant for the foundation and processing of the request for arbitral pronouncement, the applicant was notified to attach to the proceedings the notification of the assessment and payment of the tax which is the object of the proceedings.

In response, it again attached the payment receipt of the tax and supporting documents of the exchange of e-mails with the AT, among them an e-mail of 23-09-2014, with "recommendation of payment" due to the existence of tax debts.

It also presented a response e-mail to that other one, and of the same day, in which it refers "in relation to this debt I have already addressed myself both to the tax office and to the motor vehicle registration to prove that the sale was made on the day 07 of July of 2011". From which, as well as from the existence of a prior petition sent to the Ombudsman, it results that the applicant already knew of the existence of the debt in question, at a moment prior to the aforesaid e-mail of 23-09-2014.

Which prefigures the verification of the untimeliness of the request for constitution argued by the respondent.

If the applicant understood that it had not been notified of the assessment in question or that the enforcement title which served as the basis for the enforcement suffers from falsity, the proper means to react would be the opposition to enforcement [article 204, no. 1, (c) and (e) of the CPPT] and never the present request for arbitral pronouncement.

Although the untimeliness of the request was argued by the respondent, such question is of official cognizance, being excluded from the availability of the parties [which results from the combined application of articles 333, no. 1 of the CC and 89, no. 1, (h) of the CPTA ex vi article 2, (c) of the CPPT, in light of what is provided in subparagraphs (a) and (c) of no. 1 of article 29 of the RJAT].

It follows from the above that there occurs lapse of the right of action, on grounds of untimeliness of the request for arbitral pronouncement relating to the assessment of IUC relating to the year 2011 and relating to the vehicle with registration plate …-…-…, which leads to the absolution of the AT.

It should be said incidentally that, even if this were not so, and in light of the relationship of facts given as proven, the request would fail in any event.

For, although we are inclined to admit that article 3, no. 1 of the CIUC enshrines a presumption of subjective scope, it is manifest that the applicant did not succeed, as fell to it, in overcoming such presumption, the burden of which fell to it.

  1. DECISION

In light of the foregoing, it is decided:

a) To declare the lapse of the right of action, on grounds of untimeliness of the request for arbitral pronouncement and, consequently, to absolve the Tax and Customs Authority from the instance.

b) To condemn the applicant in the payment of the costs of the proceedings.

CASE VALUE: In accordance with the provision of articles 306, no. 2 of the Code of Civil Procedure, article 97-A, no. 1, (a) of the Code of Tax Procedure and Processing and article 3, no. 2 of the Regulation of Costs in Tax Arbitration Proceedings, the case is valued at 630.67 € (six hundred thirty euros and sixty-seven cents).

COSTS: Pursuant to the provision of article 22, no. 4, of the Regulation of Costs in Tax Arbitration Proceedings, the amount of costs is fixed at 306.00€ (three hundred and six euros), in accordance with Table I annexed to the Regulation of Costs in Tax Arbitration Proceedings.

Let it be notified.

Lisbon, 30-06-2015

The Arbitrator

António Alberto Franco

Frequently Asked Questions

Automatically Created

Who is liable for IUC when a vehicle is sold but the registration has not yet been updated to the new owner?
Under Portuguese tax law, IUC liability when a vehicle is sold but registration remains unchanged is determined by Article 3(1) of the Unique Circulation Tax Code (CIUC). The Tax Authority's position, as articulated in this case, is that the taxable person is expressly defined as whoever appears in the motor vehicle registration, regardless of actual ownership transfers. This means the seller who remains registered continues to be liable for IUC until registration is updated. The Tax Authority argues this is not a rebuttable presumption but rather an intentional legislative choice to ensure legal certainty and administrative efficiency. However, taxpayers have challenged this interpretation, arguing that actual ownership should prevail and that civil law principles of ownership transfer should apply. The practical implication is that sellers must ensure prompt registration updates to avoid continued tax liability, as mere delivery of the vehicle and execution of a sale contract may not suffice to transfer IUC obligations under the Tax Authority's interpretation.
Can the legal presumption of vehicle ownership based on registration be rebutted for IUC purposes in Portugal?
The central legal controversy in Portuguese tax law concerns whether the registration-based ownership criterion in Article 3(1) CIUC constitutes a rebuttable legal presumption or an absolute legal definition. The Tax Authority's position is that the legislator intentionally did NOT use the language 'are presumed to be owners' but instead established that owners 'are considered as such' - those registered. The AT argues this creates a definitive legal classification for tax purposes, separate from civil law ownership concepts, which cannot be rebutted by proving actual ownership differs from registered ownership. This interpretation prioritizes administrative certainty and efficiency. Conversely, taxpayers argue that registration elements constitute mere presumptions admitting contrary proof, and that the Tax Authority cannot disclaim responsibility for identifying the legitimate owner by sheltering behind registration data. They contend that actual ownership transfer through valid contracts should determine tax liability. The resolution of this question has profound implications: if registration cannot be rebutted, sellers remain liable until formal registration updates occur; if rebuttable, evidence of actual sale may shift liability to buyers even before registration.
What is the deadline for filing a request for arbitration at CAAD to challenge an IUC tax assessment?
The deadline for filing arbitration requests at CAAD to challenge IUC assessments is governed by Article 10 of the Legal Framework for Tax Arbitration (RJAT). In this case, the Tax Authority raised a procedural exception of untimeliness (lapse), arguing the arbitration request was filed outside the legal deadline. The AT noted that the applicant failed to prove the dates of notification of tax assessments or the dates for voluntary payment, with the only evidence being proof of IUC payment in tax enforcement proceedings, indicating the voluntary payment period had long expired. Under Portuguese tax procedural law, arbitration requests generally must be filed within specific timeframes calculated from notification of the contested act or from the deadline for voluntary payment. The untimeliness exception is critical because procedural deadlines are typically considered matters of public order that tribunals must examine ex officio. Taxpayers challenging IUC assessments must therefore carefully document notification dates and file arbitration requests within the statutory period, which typically runs from the notification of assessment or conclusion of prior administrative proceedings. Failure to meet these deadlines results in definitive loss of the right to challenge the assessment through arbitration.
How does the transfer of vehicle ownership through a private sale affect IUC subjective incidence under Portuguese tax law?
Transfer of vehicle ownership through private sale creates a disconnect between civil law ownership and IUC subjective incidence under Portuguese tax law. Under civil law principles, ownership transfers upon delivery and contract execution, without registration being a validity requirement. However, Article 3(1) of the Unique Circulation Tax Code establishes that for IUC purposes, taxable persons are those registered as owners. This creates two parallel ownership concepts: actual/civil ownership versus fiscal/registered ownership. The Tax Authority argues this is an intentional legislative policy choice reflecting the special nature of tax law (lex specialis) that derogates from general civil law principles. The practical effect is that private sales transfer actual possession and civil ownership but do not automatically transfer IUC liability until registration is updated. This regime creates risks for sellers who deliver vehicles and execute valid sale contracts but fail to ensure prompt registration updates - they remain fiscally liable despite losing actual ownership. The policy rationale is administrative efficiency: the Tax Authority can assess IUC based on publicly verifiable registration data without investigating actual ownership through private contracts. This system places the burden on parties to private sales to promptly update registration to align fiscal and actual ownership.
What evidence is required to prove that a vehicle was sold before the IUC liability date when the registration still shows the previous owner?
To prove a vehicle was sold before the IUC liability date when registration still shows the previous owner requires substantial documentary and potentially testimonial evidence, though the efficacy of such proof depends on whether the registration-based criterion is deemed rebuttable. Essential evidence includes: (1) a dated, written sale contract (contrato de compravenda) clearly identifying the parties, vehicle, sale price, and transfer date; (2) proof of delivery of keys and vehicle documents to the buyer on the alleged transfer date; (3) evidence of payment, such as receipts, bank transfers, or checks corresponding to the sale price; (4) witness testimony corroborating the transfer; (5) evidence that the buyer took possession and control, such as insurance policies in the buyer's name, maintenance records, or parking registrations; (6) explanations for why registration was delayed despite the sale occurring. However, the critical legal issue is whether such evidence is legally relevant. The Tax Authority's position in this case is that Article 3(1) CIUC creates an absolute legal definition based on registration that cannot be overcome by proving actual ownership transfer occurred earlier. If this interpretation prevails, even overwhelming evidence of pre-registration sale would be insufficient to shift IUC liability. Conversely, if registration is deemed a rebuttable presumption, such comprehensive evidence might successfully demonstrate the actual owner and shift tax liability accordingly. The evidentiary burden is substantial and the legal outcome uncertain.