Studi Tributari Europei. Vol.8 (2018)
ISSN 2036-3583

The influence of EU law and OECD initiatives on corporate tax design in Italy

Andrea ManzittiUniversità Bocconi (Italy)

October 2019

Abstract

The article illustrates the major corporate tax reforms occurred in Italy in the past 3 decades and compares them with the international soft and hard law initiatives on corporate taxation. It shows how Italy has often been at the forefront of the changes and, in some cases, led the way in designing new tax concepts which have been later on adopted as global standards.

Keywords: tax; corporation tax; international tax; tax harmonisation; tax cooperation.

1 Introduction

Harmonisation of direct corporate taxation in Europe has been pursued since the Union was founded, when the several connections between the success of the single market project and a closely coordinated tax policy for EU enterprises were immediately identified. Efforts, spanning several decades, have led to some tangible results even though approving EU tax legislation is one of the most difficult political exercises. Governments obviously care deeply about their tax sovereignty, which is why Council legislation on direct taxation always required unanimity.

In the ’80s, after a few years of enthusiasm, tax harmonisation suddenly disappeared from the EU’s political agenda. Tax competition rapidly became the new mantra, and tax policy a powerful tool for countries to enhance their competitiveness.

The growing importance of digitalisation and intangible assets to value creation has allowed companies to serve markets remotely and given them increased flexibility as to where they report profits for tax purposes. Countries have thus started competing heavily to attract taxable revenues from other countries.

It was soon felt that one country’s aggressive tax policies undermine the tax basis of another, which was simply unacceptable, at least when tax competition reached aggressive levels.

Despite the fact that tax harmonisation remained (and still remains) politically incorrect, some important pieces of EU harmonising legislation have been approved, especially over the last decade, to enable countries to protect their tax basis against artificial outflows.

One main driver for this revived enthusiasm is the increased awareness of public opinion of corporate taxation, especially in fighting tax avoidance by MNEs. The need to protect the domestic tax basis from artificial erosion and profit-shifting pushed legislators to devise adequate responses. It was quickly understood that efficient solutions require close coordination of domestic tax policy.

Analysis of policy changes in the field of corporate taxation shows the usual long-term switch from regulations to markets, and back again. Until the ’80s, the pendulum was high up in tax harmonisation and swung rapidly to the opposite end — to tax competition. It now appears to be swinging back towards the other end.

This paper illustrates how Italy has reacted to this pendulum swing.

3 Italy on the spot

In the preceding paragraphs, we noted that:

  1. corporate tax remains an important source of revenue throughout the world, despite a steady decrease in its contribution to domestic tax revenue and an even sharper reduction in nominal rates;

  2. the cooperation of jurisdictions in the design of tax rules has increased considerably in the last 50 years;

  3. the first phase of supranational legislative cooperation on corporate taxation focused on the avoidance of juridical double taxation — primarily through bilateral tax treaties — and, subsequently, on economic double taxation. The EU has been particularly active in the latter initiative (PS Directive, Merger Directive, Interest and Royalty Directive, Arbitration Convention, etc.), as any double taxation on a company’s profits was an apparent obstacle to the internal market;

  4. the second phase of cooperation concentrated mainly on international tax evasion (exchange of banking information, with particular focus on tax havens) and aggressive tax competition;

  5. the third phase was dedicated to international tax avoidance and aggressive tax planning and culminated with the OECD 15 BEPS Reports and the two EU ATA Directives; and

  6. the fourth phase is underway and concerns the formidably difficult issue of addressing the tax challenges arising from the digitalisation of the economy, which requires new architecture for the international corporate tax system.

This section will analyse how corporate tax has changed in Italy alongside the changes in the international arena.

3.1 Corporate tax rates

Until the mid ’90s, Italy was moving in the opposite direction from that of other industrialised countries. Due to budgetary constraints, at that time its overall corporate tax rate was among the highest in Europe; corporate income tax was set at 37%, but businesses were also subject to a 16.2% local income tax and a 0.72% asset tax. The combined tax rate was near 55%, one of the highest in the world.

The statutory CIT rate was still 37% in 2000: by 2017 it had dropped 13 percentage points, making Italy one of the OECD countries that experienced the sharpest decrease in the statutory rate since 2000.

In terms of contributing to revenue, CIT reached its peak in 2007 (3.1% of GDP), decreased rapidly thereafter and is nowadays slightly above 2% of GDP. This decrease reflects the nominal rate reduction and the sloppy performance of the domestic economy.

Throughout the years, the rate reduction in Italy was paired with a series of gradual changes to the design of corporate tax.

The decrease in CIT standard rates did not result in an equally sharp decrease on CIT revenue. This reflects two factors: (a) CIT revenue depends not only on rates but also on the basis; when rates decline and the basis grows, revenue tends to remain stable; and (b) corporate tax revenue is largely driven by the economic cycle.

The following chart illustrates this phenomenon in Italy.

Chart 1 – Evolution of CIT revenue and rates and their influence on the GDP
Chart 1 – Evolution of CIT revenue and rates and their influence on the GDP

3.2 Elimination of economic double taxation and other selective measures the determination of/for determining the tax basis for corporate tax

In 1998, Italy implemented a selective reduction of corporate taxes, aimed in particular at reducing the debt-equity tax bias, i.e., the tax distortion between debt and equity financing.

The main changes were: (a) enacting a restricted version of the Allowance for Corporate Equity (“ACE”) called the Dual Income Tax system (“DIT”); and (b) abolishing local taxes and replacing them with a regional tax (IRAP) on an enterprise’s added value, at that time at 4.25%. The 1998 tax reform also entailed an important revision of the rules on corporate reorganisations, with the aim of making the tax system neutral for all reorganisation patterns.

The Italian DIT system worked as a dual rate schedule, in which the profits were divided into two portions. The first approximated normal profits, representing the opportunity cost of new investments with equity financing, and was taxed at 19%. The second portion was residually computed by deducting normal profits from total profits and was taxed at the ordinary rate of 37%.

This mechanism aimed to guarantee tax neutrality as to the choice between debt or equity financing and between productive factors. Critics of the DIT system objected that the dual rate system applied only on the incremental equity (and not on the entire equity base of the company) and that the effective tax rate for each company was not transparent and stable.

The DIT regime remained in existence until 2004, when the second important corporate tax reform was enacted with Legislative Decree No. 344/2003, which introduced the new corporation tax called IRES. One of the policy choices behind IRES was to simplify and level the tax rules on corporate profits. Instead of selective measures to favour specific enterprises or business models, it proposed a general and equal reduction of tax rates for corporate profits.

Apart from this policy twist and the different names used,8 IRES has a very different fundamental structural feature from its predecessor (“IRPEG”). The full imputation system to avoid economic double taxation of corporate profits was changed to a “participation exemption” system, similar to what some other OECD countries implemented in the 1990s (e.g., Finland, France and Germany).

In the IRPEG model, recipients of dividends distributed by an Italian resident company were obliged to report that dividend in their yearly tax return but entitled to an imputation credit. The credit amount was a percentage of the dividend received and was first added to the recipient’s taxable income and then deducted from the tax due on the grossed-up taxable income. If the credit amount exceeded the gross tax on the shareholder’s total income, the shareholder was entitled to a refund of the excess. However, the IREPG was introduced in 1973, whereas the imputation credit became law only four years later in 1977.

This mechanism was such that the tax paid by the company was not finally acquired by the tax authority when paid by the company, as the tax authority could be obliged to fully or partly refund it to the shareholders. In essence, IRPEG was an advance payment by the company for the taxes that the shareholders owed on that dividend.

This model had several inefficiencies.

First, it was extremely complex. This was mainly because profits distributable to shareholders very often do not represent profits on which the distributing company is to pay corporate tax.

For instance, if a company was entitled to a tax holiday, when it distributed profits to the shareholder granting a credit for unpaid taxes was far too generous. Apart from tax breaks, the amount of distributable profits in a given year is greater (or lower) than the profits that the company has been (or will be) taxed for. This because numerous differences exist — whether temporary or permanent — between pre-tax accounting profits and taxable profits. Moreover, an efficient system needed to be designed to allow a company to pass on a tax concession to its shareholders, if the legislator so wished.

The imputation system had to take these occurrences into consideration and regulate them properly. In the “IRPEG era”, this was achieved in two different ways, equally complex.

In 1983, a new law required the distributing company to calculate and pay an “equalisation tax” (maggiorazione di conguaglio) when it distributed profits to its shareholders. The equalisation tax was meant to equate the corporate tax paid by the company to the imputation credit available to the shareholders. The regulations on the equalisation tax were extremely complex. In addition to its inherent complexity, the system was such that the equalisation tax could only approximate the imputation credit available to the shareholders but never match it with exact precision. This because some categories of shareholders were not entitled to the imputation credit because they were tax exempt (e.g., a pension fund) or liable to tax by way of a final withholding tax at source (which is the case for all non-resident shareholders). In all such cases, the nature of the equalisation tax changed: despite being designed to ensure that the imputation credit for shareholders did not exceed the taxes paid by the company, it resulted in an unjustified additional tax burden on distributed profits.9

The system was slightly modified in the 1998 tax reform. The company was requested to keep track of the CIT it suffered in each tax year. This amount was put in a “basket” (“Basket A”) that also included the tax that the company did not pay under specific tax rules that, by law, should have given right to a refundable imputation credit for shareholders even though no actual tax was paid. The unpaid taxes that the law did not want to generate a refundable tax imputation credit for shareholders were put in another basket (“Basket B”). When the company distributed a dividend to its shareholders, it also distributed portions of Basket A and B imputation credits, both of which the shareholders could use to offset tax due on the dividends. However, if the imputation credit exceeded the shareholders’ tax liability, only Basket A credit was refundable.

The system was made somewhat simpler and most inefficiencies of the equalisation tax removed, but its structural weaknesses remained.

Indeed, the imputation tax system was structurally unable to work properly in cross-border situations (i.e., when a company and a given shareholder reside in different jurisdictions). Additionally, it addressed the economic double taxation only on dividends — not on capital gains.

As to its structural inability, the imputation system appeared to work perfectly in purely domestic situations. But a shareholder resident in Italy was eligible to use the imputation system for Italian-sourced dividends only. When dividends arrived from abroad, no credit was available. But why should Italy have granted credits for taxes that the distributing company paid to another tax authority? And how could the taxes paid by that company be calculated?

No dividend tax credit for foreign-sourced dividends resulted in a higher taxation of equity investments made abroad. This discrimination resulted in an in-built bias in favour of domestic investments. This was not tolerable, not to mention that it conflicted with EU fundamental freedoms.

But EU complications (and possible discriminations including outside the EU) existed also in cases in which the distributing company was in Italy and the shareholder was abroad. Indeed, an Italian resident shareholder was entitled to the credit, but a non-resident shareholder was not. This discrimination was possibly tolerable as it was inherently coherent with the fundamental principle of Italian taxation, but it remained a discrimination.

As mentioned, another issue was that, when available, the imputation system eliminated the economic double taxation on distributed profits, but not on capital gains.

The rationale for aligning the tax regime of dividends and capital gains on shares is rather simple. The tax exemption of distributed profits eliminates economic double taxation. But when a company retains its after-tax profits, the value of its shares increases correspondingly. If a shareholder sells the shares before the dividend is distributed, the right to collect it tax-free goes to the purchaser, and the seller therefore requests an increased sale price. That constitutes a capital gain that has the same exact nature as the dividend and must therefore be taxed in the same way. Even when the capital gain does not correspond to profits already generated by the company, it represents one of the following (or both): (a) the existence of hidden reserves that would sooner or later be generated and thus taxed; or (b) the company’s ability to generate profits in the future, which would be subject to tax. In either case, the origin and nature of the capital gain remain the same.

The above considerations were the main drivers of the 2004 reform, whose pivotal change was replacing the imputation tax system with a participation exemption system — i.e., the system now in force in almost every country worldwide.

The 2004 reform moved the centre of gravity of corporate taxation from shareholders to the company and aligned the corporate tax model to that prevailing since the start of the century. As mentioned, from 1992 eliminating economic double taxation of corporate profits between companies residing in two different EU member states required either a participation exemption or an imputation credit system. All EU Member States (including Italy) chose the participation exemption, but Italy maintained the imputation system for purely domestic situations. The two systems could not co-exist.

The change from the imputation system to the dividend received participation exemption entailed several other important changes to Italian corporate taxation.

First, the exemption had to be extended to capital gains. The exemption for capital gains on shares required that tax losses on shares, whether incurred or accounted for as write-downs, had to be non-deductible.

This meant that a corporate shareholder could not make effective use of the (tax) loss incurred by its participated company. Indeed, when a subsidiary incurs an accounting loss, this generally results in a tax loss, which can be carried forward to offset the subsidiary’s future taxable profits. Before the participation exemption was introduced, the parent company could make immediate use of that loss by writing down the value of its shareholding and deducting the accounting loss from its taxable base.10 As that possibility no longer existed, it had to be replaced with another corrective mechanism.

This was one of the reasons for introducing the tax consolidation system,11 one of the other very important changes of the 2004 reform. The optional tax consolidation group aims to provide a business the same overall tax treatment whether it operates as a single entity or as a group. A tax consolidation group thus eliminates the impediments to the most efficient use of tax attributes (tax losses, tax credits, etc.) belonging to different entities of the group.

The 2004 corporate tax reform was harshly criticised by the then opposition parties. Specifically, the introduction of the participation exemption was considered a sort of unjustified gift to plutocrats, which could enjoy no tax on their large gains from selling shares. The reality is that replacing the imputation system with the participation exemption increased (rather than diminished) yearly revenue from corporate taxation by some EUR 3.5–4 billion.12

The 2004 corporate tax reform also abolished the DIT system and introduced a mechanism (known as the “thin capitalisation rule”) that limited the deduction of excessive interest expense. Instead of correcting the debt bias by encouraging the company’s capitalisation through incentives, the new system penalised excessive leverage from shareholders.

Finally, the 2004 reform reduced the CIT rate to 33%.

Since then, the system has remained relatively stable, with several minor amendments introduced every now and then, the most important of which are the following.

In 2008, the thin capitalisation rules were abolished and replaced by a generally applicable ceiling to the deduction to net interest expense exceeding 30% of EBITDA. Interest expense that exceeds the threshold can be carried forward to future tax years or made available to other affiliated entities within a consolidated tax group. The corporate tax rate was reduced to 27.5% and the taxable base increased by prohibiting taxpayers from deducting accelerated and anticipated depreciation allowances.

In 2011, an amended form of Dual Income Tax was reinstated, renamed as "Aiuto alla Crescita Economica" (‘a help to economic growth’), whose acronym (ACE) mimics that of Allowance for Corporate Equity.

The main difference between the 1998 DIT and the 2011 ACE is that the 1998 DIT allowed a portion of the corporate profits (those representing the opportunity cost of new investment financed with incremental equity) to be taxed at a lower rate. Conversely, the 2011 ACE allowed the deduction of the opportunity cost of qualifying incremental equity, whereas the taxable base was subject to the same proportional tax rate.

In 2017, the nominal rate was further reduced to the current one of 24%. In 2018, the ACE relief was once again abolished.

3.3 Measures to combat tax evasion and tax avoidance

Tax evasion through tax havens and offshore bank secrecy is something of a national sport in Italy, especially since currency exchange controls were removed.

This comes as no surprise, as not only is Italy surrounded by countries who make others’ tax evasion one of their main GDP contributors (Switzerland, Austria, MonteCarlo and Liechtenstein), but it even hosts one within its border (San Marino).

Due to this territorial peculiarity, Italy has always been at the forefront of the fight against international tax evasion and avoidance.

Indeed, as early as 1991, Italy introduced its first rule limiting the deduction of costs and expenses deriving from transactions with related entities in black-listed countries. At that time, very few other countries had similar measures. The rule was in force for 25 years, undergoing various amendments to widen its scope of application.

Curiously, the measure was abolished in 2016, when the international response to base erosion and profit shifting reached its peak.

Italy introduced anti CFC rules back in 2000, shortly after the 1998 OECD Report “Harmful Tax Competition: an Emerging Global Issue” was published. Their scope of application was then extended to affiliated companies (i.e., companies in which the Italian taxpayer held 20%–50% of the stock) in 2004, something unheard of anywhere else in the world.

In 2010, CFC legislation was again widened to include EU subsidiaries. And just when international consensus was about to be reached and widespread introduction of CFC rules suggested, those in force in Italy for 25 years were relaxed. Likewise, the CFC rules applying to affiliated companies were abolished in 2016.

As seen above, Italy introduced limitations to the deduction of interest expense as early as in 2004 and modified them in 2007 in a way that closely resembles those mandated as the European minimum standards by the ATAD Directives.

Italy was also ahead of international trends regarding hybrid financial instruments, having introduced a specific rule in 2004. The rule states that the tax exemption for foreign-sourced dividends applies to the extent that in the taxpayer’s country of residence, the dividend is not a deductible cost item, even partially. The rule aims to prohibit one of the several cases of “deduction-not inclusion” mismatches addressed by BEPS and ATAD rules.

Indeed, the BEPS project included recommendations on addressing preferential ruling regimes, hybrid mismatch arrangements, abuse of double tax treaties, the avoidance of permanent establishment status, and similar arrangements.

To ensure/guarantee uniform minimum standards of adoption of the OECD recommendations within Europe, between 2016 and 2017 the EU Council approved two directives (ATAD I and II) to implement most BEPS recommendations.

The ATADs address the following anti-BEPS actions: (a) limitation for the deduction of interest expense; (b) entry and exit taxation; (c) CFC; (d) general anti-abuse rules; and (e) hybrid mismatches.

As mentioned, Italy had rules governing each of the above topics for many years before the ATADs came into force, some of which mirror those suggested by the ATADs.

The first measure (on interest expense) limits the deduction of net interest payments if they exceed 30% of the corporate taxpayer’s EBITDA. Italy introduced a system almost identical to the EU standard already in 2007. It can be reasonably assumed that ATAD I took the Italian rules and experience as a model to design the EU-wide measure.

Indeed, the implementation of the EU ATADs standards required only the following marginal changes to the existing rules:

  1. EBITDA must now be quantified based on the tax values, i.e., reflecting the corporate income tax adjustments applied to the EBITDA computed from an accounting perspective. The former rules were based on accounting EBITDA;

  2. net interest expense exceeding 30% of EBITDA, not deducted in a year, can now be carried forward for five years. Under the former rules, it could be carried forward for an unlimited time; and

  3. interest expense subject to limitation now includes interest capitalised on the cost of purchased assets, and interest on trade payables.

The same is true for entry and exit tax rules, i.e.; the rules addressing the tax consequences of transferring a company’s fiscal residence to or from Italy. The issue was well known and addressed in Italy. The new ATAD rule essentially envisages the possibility to spread tax payments due over five years; Italy previously allowed six years.

With regard to CFC, Italy introduced its first CFC rules in 2000 and amended them several times (in 2004, 2010 and 2015). The ATAD CFC rules differ from the Italian ones in some respects, none of which are of major significance. However, the need to implement ATADs enabled Italy to reshape and streamline its pre-existing CFC rules as follows:

  1. CFC rules now apply also to Italian permanent establishments of non-resident persons if the PE effectively holds controlling interests in non-resident companies;

  2. the notion of control was broadened to include cases in which the Italian person is entitled to more than 50% profit participation rights in the foreign entity;

  3. a CFC exists if the following two conditions are met:

    1. the foreign entity’s effective tax rate is lower than 50% of that applicable if the entity were tax resident in Italy; and

    2. more than one third of the foreign entity’s revenue is “passive income” (dividends, interest, royalties, capital gains, etc.); and

  4. the CFC rules do not apply if the entity carries out a substantive economic activity, with adequate staff, equipment, assets and premises.

As to tax law abuse, Italy decided not to transpose the general anti-abuse rule (“GAAR”) contained in the ATADs as it held that the existing GAAR was fully in line with the EU standards.

The evolution of the public response to tax avoidance in Italy is quite interesting. Tax practitioners and commentators always highlight the traditional distinction between tax planning (legal, however unpopular) and tax evasion (illegal, however widespread). Tax avoidance is somewhere in between. Curiously, today’s wider public view tax avoidance as when companies (especially large ones do not pay what they “ought” to pay, which they consider far worse than tax evasion by “normal” people.

Until the beginning of the ’90s, it was accepted in the tax profession, tax administration and tax courts that tax laws were to be interpreted literally and strictly, and that tax provisions so construed had to be applied to transactions that were themselves to be analysed in a very legalistic way.

Tax laws contained numerous loopholes ready to be exploited against high tax rates. Tax avoidance merchants created increasingly sophisticated tax avoidance schemes. As the scale and artificiality of these schemes increased, powerful concerned voices started to question, then criticise and finally overturn the legal basis underlying these schemes.

Italy introduced its first quasi-general anti-avoidance rule in 1997. It had two limitations: (a) it applied only to income taxes, and (b) it did not cover facts occurred before its effective date. In the first decade of the new century, Supreme Court judges were asked to check the legality of widespread cases of dividend stripped and dividend washing carried out before 1997 (i.e., when they were not subject to any express anti-avoidance legal scrutiny). Their response was very surprising: the Grand Chamber of the Supreme Court ruled that the Italian Constitution has implicitly prohibited tax avoidance since 1948, when the Constitution was enacted.

Hence, dividend stripping and dividend washing trades were held unlawful, even if carried out before anti-avoidance legislation came into force.

Apparently, until then no-one in Italy had noticed this astonishing peculiarity of the Italian Constitution. Certainly not the Parliament, which was unaware that the Constitution already contained a GAAR when it introduced the first quasi-general anti-avoidance rule in 1997. In any event, the Italian legislator approved a new, fully-fledged GAAR in 2015, which closely resembled that contained in the ATADs.

The ATADs minimum standards on hybrid mismatch arrangements are extremely complex, and Italy decided to implement them without any substantial change. Most of these anti-hybrid rules are brand new also in Italy, with one notable exception. As mentioned, as part of the 2004 tax reform, a rule was introduced to deny the tax exemption of foreign-sourced dividends, which entitled the distributing company to deduct the payment in its country of residence. For all intents and purposes, this was a hybrid mismatch preventing rule. It was in force in Italy for some 15 years before the ATADs and for 10 years before the amendment by Council Directive 2014/86/EU of Art. 4(1)(a) of the EU parent-subsidiary directive, which now stipulates that the Member State of the parent company is to tax received profits distributions to the extent that the profits are deductible by the subsidiary.

3.4 Web Tax

The 2015 BEPS Action Report 1 is entitled “Addressing the Tax Challenges of the Digital Economies”. Since its publication, the many public policy challenges of digitalisation have been discussed to help policymakers better understand digital transformation and develop and implement a resilient framework that fosters a positive and inclusive digital economy and society.

Four years on, and consensus on such formidably complex issues (such as new taxation nexus and profit allocation, users’ participation, marketing intangibles, and fractional apportionment to significant economic presence) is far from being reached.

In this period, Italy experimented with not one but two Italian ways of taxing digital profits, neither of them yet effective.

The 2019 Budget Law introduced a tax on digital services which replaced the previous measures envisaged in the 2018 Budget Law, which did not enter into force as the implementing decree was never enacted.

The new digital service tax is meant to apply to digital transactions performed — individually or at group level — by taxable persons established in or outside of Italy in the course of their business. The deadline for issuing the implementing legislation was 30 April 2019, which passed uneventfully. The hope is that nothing new happens until the EU agrees on something.

4 Conclusion

Fairness advocates against domestic and international double taxation and double non-taxation. Countries and international organisations (OECD, G20 and EU) have taken several initiatives in those fields.

The effectiveness of these initiatives largely depends on participating jurisdictions acknowledging that the initiatives follow the comprehensiveness principle, ensure the coherence of corporate income taxation at international level, and reach as much consensus as possible.

National states are responsible for implementing multilateral deliberations and play a decisive role in their design.

Although tax harmonisation is no longer a priority on the international corporate tax policy agenda, and after some years in which tax competition was welcomed and considered to need only minor legislative balances, many countries have realised that new issues brought by globalisation and digitalisation can be addressed only with global solutions.

Progress made internationally in the last few years has been phenomenal.

Italy has always actively participated in all international forums and has sometimes been ahead of the times in designing and implementing innovative legislation against tax evasion and tax avoidance, and on the digital economy. Consensus solutions to the tax challenges arising from the digitalisation of the economy are far from being reached. But with a certain degree of optimism, the G20 is aiming to issue final legislative recommendations by the end of 2020. By that time, Italy may find itself debating with its third or fourth attempted domestic solution. Always ahead of time.


  1. The following facts demonstrate that companies increasingly operate, in various facets, on a multinational scale. The number of multinationals increased from some 7,000 parent companies in 15 developed (EU and non-EU) countries at the end of the 1960s to some 40,000 at the end of the 1990s. Accordingly, international production, trade and investment increased significantly: sales of foreign affiliates worldwide accounted for an estimated $13.6 trillion in 1999, compared to approx. $2.5 trillion in 1980 — a figure twice as high as that of global exports. In 2000, multinationals accounted for about one-tenth of global GDP, compared to one-twentieth in 1982. This corresponded to a broad increase in foreign direct investment (FDI). The ratio of world FDI inflows ($865 billion in 1999) to gross domestic capital formation is now 14%, compared to 2% 20 years ago. In the same period, the ratio of world FDI stock to world GDP increased from 5% to 16%. Both the number and the value of mergers and acquisitions witness a significant increase over the same timespan. The value of all mergers and acquisitions (cross-border and domestic) as a share of world GDP rose from 0.3% in 1980 to 8% in 1999, and the value of completed cross-border mergers and acquisitions rose from less than $100 billion in 1987 to $720 billion in 1999. The total number of all mergers and acquisitions worldwide grew by 42% annually between 1980 and 1999.

  2. It is generally agreed that the most material features in determining a corporate entity’s tax liability and, hence, the effective tax rate are: statutory rate, tax accounting rules, depreciation, provisions, losses, capital gains, mergers and acquisitions, group relief/consolidation (including inter-group dividends), inventories and expense deductions.

  3. The Commission identified the following five criteria that potentially mark harmful tax measures: (1) an effective level of taxation that is considerably lower than the general level of taxation in the country concerned; (2) tax advantages are granted only to non-residents or in relation to activities that are isolated from the domestic economy and, therefore, have no effect on the national tax base; (3) tax advantages are granted without any real economic activity or substantial economic presence; (4) the basis for profit determination for companies departs from internationally accepted rules, particularly those approved by the OECD; and (5) the operation of a regime lacks transparency and information is not exchanged effectively, which makes it harder for home countries to adopt defensive measures.

  4. This paper does not examine the very delicate issue of taxation of the digital economy. This is currently probably the most important policy issue in international taxation and will require an enormous amount of coordination to be resolved.

  5. Art. 107 of the TFEU: “Save as otherwise provided in the Treaties, any aid granted by a Member State or through State resources in any form whatsoever which distorts or threatens to distort competition by favouring certain undertakings or the production of certain goods shall, in so far as it affects trade between Member States, be incompatible with the internal market”.

  6. The OECD identified the following five key factors that mark harmful tax practices: (a) low or zero effective tax rates on the relevant income; (b) the regime is “ring-fenced”; (c) the lack of transparency in the operation of a regime, which makes it harder for home countries to adopt defensive measures; (d) the lack of an effective exchange of information, which is evidenced by the failure to notify foreign tax authorities of a regime granted to its taxpayer; and (e) the granting of tax advantages without any real economic activity or substantial economic presence.

  7. BEPS Report no. 11 (“Measuring and Monitoring BEPS”) estimated that in 2013 the global corporate income tax revenue loss was 4%–10% of the global CIT revenues, i.e., between USD 100 and 240 billion annually. One of the most interesting qualitative findings of this Report is that the effective tax rates paid by large MNEs are estimated to be 4 to 8½ percentage points lower than similar enterprises with domestic-only operations. International business is no longer conducive to double taxation but generates constant opportunities to less-than-single taxation, taking home-country rates as a benchmark.

  8. The previous corporate tax was named “imposta sul reddito delle persone giuridiche” (tax on the income of legal entities, abbreviated as “IRPEG”), whereas the new tax is called “imposta sul reddito delle società” (tax on the income of companies, abbreviated as “IRES”).

  9. This explains why some bilateral treaties for the avoidance of double taxation (to which Italy was a party) signed or amended in those years contained rules for the refund of the equalization tax (or even the imputation credit) to shareholders resident in the other State.

  10. One inefficiency of the prior system was that the company that incurred the loss remained entitled to carry forward the tax losses it generated, even though its shareholder had already “used” the same tax loss. This created an obvious opportunity for multiple uses of tax losses in a group.

  11. The same rationale was behind the introduction of the consortium relief, which is the option for corporate joint ventures to be treated as transparent entities so as to allow their corporate shareholders to immediately use the JV’s tax losses by direct imputation.

  12. This was due to several factors. In essence, corporate taxpayers (especially the largest ones) had plenty of risk-free opportunities to shift capital gains on the sale of shares to an EU foreign subsidiary. The EU subsidiary usually did not pay tax on the gain thanks to the domestic exemption regime, and the repatriation of profits to the Italian parent company was also tax free due to the Parent-Subsidiary regime. When a taxpayer expected to sell at a loss, it incurred the loss in Italy and benefitted from its full deduction. In many cases, the loss could be used several times in multi-level groups.