3_controleBigTech
π Digital π Society
How digital giants are transforming our societies

Can Big Tech be taxed more ? The true, the false and the uncertain

with Martin Collet, Professor at Université Paris Panthéon-Assas
On June 11th, 2025 |
5 min reading time
Martin Collet
Martin Collet
Professor at Université Paris Panthéon-Assas
Key takeaways
  • GAFAM benefit from more advantageous tax regimes than traditional companies in Europe.
  • The lack of unanimity among EU Member States is hindering the adoption of a digital services tax, due to differing priorities.
  • The dematerialised nature of digital services makes it difficult to determine their tax base and locate their profits.
  • While it is often argued that higher taxes in Europe could slow down digital investment, other factors must also be taken into account, such as regulatory stability and access to the European market.
  • The proposed global minimum tax (OECD, G20) aims to reduce the attractiveness of tax havens, but does not completely prevent tax optimisation strategies by certain digital companies.

The digi­tal eco­no­my has resha­ped glo­bal trade, allo­wing com­pa­nies such as Google, Apple, Face­book and Ama­zon, com­mon­ly refer­red to as GAFAM, to esta­blish them­selves as key players. Howe­ver, these mul­ti­na­tio­nals conti­nue to bene­fit from tax regimes that are far more favou­rable than those avai­lable to tra­di­tio­nal com­pa­nies in Europe. Accor­ding to the Euro­pean Com­mis­sion, in a sta­te­ment issued in Janua­ry 2019, digi­tal com­pa­nies pay an ave­rage effec­tive tax rate of only 9.5%, com­pa­red with around 23.2% for tra­di­tio­nal busi­ness models1. This fin­ding is rein­for­ced by a report from the Euro­pean Taxa­tion Obser­va­to­ry, which states that des­pite the adop­tion of new inter­na­tio­nal rules, large digi­tal com­pa­nies conti­nue to enjoy effec­tive rates of less than 15% thanks to tax opti­mi­sa­tion stra­te­gies2.

This situa­tion high­lights the Euro­pean Union’s cur­rent inabi­li­ty to effec­ti­ve­ly regu­late an increa­sin­gly dema­te­ria­li­sed eco­no­my. Although the OECD, in a report on the digi­ta­li­sa­tion of the glo­bal eco­no­my, notes that tra­di­tio­nal taxa­tion based on ter­ri­to­ria­li­ty no lon­ger meets the needs of a glo­ba­li­sed digi­tal eco­no­my3, tan­gible pro­gress remains limi­ted. The main pro­blem remains the esta­blish­ment of a fair and consistent tax fra­me­work to coun­ter the aggres­sive tax avoi­dance mecha­nisms used by these giants.

With his exper­tise in inter­na­tio­nal taxa­tion, Mar­tin Col­let, pro­fes­sor at the Uni­ver­si­ty of Paris-Pan­théon-Assas, pro­vides an in-depth ana­ly­sis of the chal­lenges of taxing GAFAM. His work reveals the incon­sis­ten­cies of the glo­bal tax sys­tem in the face of the rise of the digi­tal eco­no­my, and he warns of the risks of tax dis­tor­tion resul­ting from natio­nal approaches such as the GAFA tax. His article “Taxa­tion of the digi­tal eco­no­my : glo­bal chal­lenge, local res­ponses4?” illus­trates his call for concer­ted reform at the inter­na­tio­nal level.

#1 Is the lack of unanimity preventing Europe from establishing a coherent digital tax system ?

TRUE : “The European Union is unable to introduce harmonised digital taxation due to a lack of unanimity among its Member States.”

The intro­duc­tion of a uni­fied digi­tal tax within the Coun­cil of the Euro­pean Union faces a major obs­tacle : the lack of una­ni­mi­ty among Mem­ber States. As Mar­tin Col­let explains, “when it comes to taxa­tion, the trea­ties are extre­me­ly clear : una­ni­mi­ty is requi­red for a mea­sure to be adop­ted. There are a few excep­tions for indi­rect taxa­tion, such as VAT and cer­tain taxes on alco­hol, but una­ni­mi­ty is requi­red for other tax mea­sures.” This prin­ciple allows a single coun­try to block the adop­tion of a reform. For example, in 2019, Ire­land, Swe­den and Den­mark vetoed the pro­po­sed digi­tal ser­vices tax5. Such diver­gence bet­ween states reflects conflic­ting prio­ri­ties : some seek to pre­serve their tax com­pe­ti­ti­ve­ness, while others want a more equi­table dis­tri­bu­tion of tax revenues.

Des­pite rene­wed efforts by the Euro­pean Com­mis­sion in 2021, as part of its “Com­mu­ni­ca­tion on Busi­ness Taxa­tion for the 21st Cen­tu­ry6,” no uni­fied plan has been agreed upon to date.

UNCERTAIN “The technical difficulties involved in defining and locating digital revenues are the main obstacle to fair European digital taxation.”

Tech­ni­cal chal­lenges exist, but they are not the only ones hin­de­ring the adop­tion of har­mo­ni­sed digi­tal taxa­tion. The dema­te­ria­li­sed nature of digi­tal ser­vices com­pli­cates the iden­ti­fi­ca­tion of the tax base and loca­tion of pro­fits. In this regard, Mar­tin Col­let states that it is neces­sa­ry to : “Dis­tin­guish bet­ween dif­ferent types of taxa­tion (on pro­fits, tur­no­ver, etc.). The main pro­blem lies in the dif­fi­cul­ty of taxing the pro­fits of com­pa­nies whose main acti­vi­ty is loca­ted in low-tax juris­dic­tions, such as Ire­land.” This struc­ture makes it pos­sible to arti­fi­cial­ly mini­mise the tax bur­den, to the detriment of coun­tries where the income is actual­ly generated.

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Added to this is the fact that “large digi­tal com­pa­nies have incor­po­ra­ted tax consi­de­ra­tions into their orga­ni­sa­tion from the out­set. They locate their intan­gible assets (patents, algo­rithms) in low-tax juris­dic­tions, which signi­fi­cant­ly reduces their tax bur­den because sub­si­dia­ries esta­bli­shed in these ter­ri­to­ries absorb most of the reve­nue.” This opti­mi­sa­tion phe­no­me­non goes beyond mere tech­ni­cal dif­fi­cul­ties : it reveals a stra­te­gy that is dee­ply embed­ded in their busi­ness model.

The reform can­not the­re­fore be limi­ted to tech­ni­cal adjust­ments ; it requires a more ambi­tious ove­rhaul. “The inter­na­tio­nal tax prin­ciples in force date back to the 1920s. They require a phy­si­cal pre­sence to jus­ti­fy taxa­tion by a state. These prin­ciples are now out­da­ted in the context of the digi­tal economy.”

#2 Taxing digital giants : a risk to Europe’s economic attractiveness ?

UNCERTAIN : “Heavily taxing digital giants would jeopardise Europe’s economic attractiveness vis-à-vis the United States and Asia.”

The idea that hea­vier taxa­tion could dis­cou­rage digi­tal invest­ment is regu­lar­ly rai­sed. Mar­tin Col­let notes that : “Some coun­tries believe that increa­sing sec­to­ral taxes is not appro­priate, as it hin­ders cer­tain eco­no­mic acti­vi­ties.” Howe­ver, other fac­tors such as regu­la­to­ry sta­bi­li­ty and access to the Euro­pean mar­ket also play an impor­tant role in com­pa­nies’ deci­sions on where to locate. Fur­ther­more, a country’s com­pe­ti­ti­ve­ness does not depend sole­ly on its tax rates, but on a mul­ti­tude of eco­no­mic and poli­ti­cal factors.

The out­come of a higher tax on attrac­ti­ve­ness remains dif­fi­cult to pre­dict. This phe­no­me­non is all the more com­plex because, as the lec­tu­rer and resear­cher points out, “some com­pa­nies pre­fer to locate their acti­vi­ties in coun­tries with more flexible taxa­tion, such as Ire­land, which allows them to sub­stan­tial­ly reduce their tax bur­den.” It is the­re­fore neces­sa­ry to take many para­me­ters into account when asses­sing the conse­quences of Euro­pean tax reform.

FALSE : “Digital giants pay taxes in Europe that are proportional to their profits on the continent.”

Digi­tal com­pa­nies still bene­fit from an effec­tive tax rate of less than 15%, accor­ding to the Euro­pean Tax Obser­va­to­ry8, main­ly through opti­mi­sa­tion mecha­nisms. By loca­ting their pro­fits in low-tax coun­tries such as Ire­land, they avoid taxa­tion pro­por­tio­nal to their actual acti­vi­ty, wide­ning tax dis­pa­ri­ties within the EU.

Regar­ding the French tax, Mar­tin Col­let explains : “In terms of bud­ge­ta­ry reve­nue, its impact is not insi­gni­fi­cant : in France, the tax brings in bet­ween €300m and €500m per year. Howe­ver, a large part of this cost is pas­sed on and the­re­fore borne by French users, not by the com­pa­nies themselves.”

There is no har­mo­ni­sed GAFA tax at Euro­pean level

Never­the­less, he also points out that “the poli­ti­cal impact of these taxes is consi­de­rable. They have hel­ped to acce­le­rate inter­na­tio­nal dis­cus­sions and have led to pro­gress such as the adop­tion in Europe of a direc­tive impo­sing a mini­mum tax rate of 15% on pro­fits made in tax havens. They have exer­ted signi­fi­cant poli­ti­cal pres­sure on the Uni­ted States and hel­ped to advance the inter­na­tio­nal tax reform project.”

#3 Do the tax reforms currently underway enable us to overcome the challenges posed by digital technology ?

FALSE : “The European GAFA tax is already in place and is working effectively to tax large digital companies.”

There is no har­mo­ni­sed GAFA tax at Euro­pean level. Although some coun­tries, such as France, Ita­ly and Spain, have intro­du­ced natio­nal taxes on digi­tal ser­vices9, these ini­tia­tives have not led to har­mo­ni­sa­tion of the Euro­pean mar­ket. While use­ful for local appli­ca­tion, these taxes create frag­men­ta­tion in tax regimes and do not allow digi­tal giants to be taxed effec­ti­ve­ly at the Euro­pean level.

Fur­ther­more, “these com­pa­nies have struc­tu­red their acti­vi­ties to take advan­tage of tax dif­fe­rences bet­ween coun­tries,” warns Mar­tin Col­let. “This makes their taxa­tion much more com­plex and reduces the effec­ti­ve­ness of any reform.” The lack of tax coor­di­na­tion within the EU the­re­fore remains a major obs­tacle. In 2021, the Euro­pean Com­mis­sion sus­pen­ded its digi­tal tax pro­po­sal pen­ding inter­na­tio­nal nego­tia­tions on a glo­bal mini­mum tax10.

FALSE : “Recent international tax reforms, notably the global minimum tax, will automatically solve the European digital taxation problem.”

The glo­bal mini­mum tax pro­ject, nego­tia­ted by the OECD and the G20 (“Pillar 2”), aims to set a mini­mum tax rate of 15% for mul­ti­na­tio­nals11. Howe­ver, this reform does not spe­ci­fi­cal­ly tar­get digi­tal com­pa­nies and pro­vides for seve­ral excep­tions, which limits its effec­ti­ve­ness. Even if this ini­tia­tive reduces the attrac­ti­ve­ness of tax havens, it does not enti­re­ly pro­hi­bit the tax opti­mi­sa­tion stra­te­gies used by some digi­tal companies.

It is in this sense that Mar­tin Col­let warns against exces­sive opti­mism. “Although this reform may have posi­tive effects, it will not enti­re­ly resolve tax inequa­li­ties within the EU. The main­te­nance of attrac­tive tax regimes in cer­tain coun­tries, such as Ire­land and the Nether­lands, conti­nues to under­mine the effec­ti­ve­ness of the reform.”

Aicha Fall
1Euro­pean Com­mis­sion, Towards a more effi­cient and demo­cra­tic Euro­pean tax poli­cy, COM(2019)8 final, 15 Janua­ry 2019 – https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX%3A52019DC0008
2EU Tax Obser­va­to­ry, Glo­bal Tax Eva­sion Report 2024, April 2024 – https://​www​.taxob​ser​va​to​ry​.eu/​f​r​/​p​u​b​l​i​c​a​t​i​o​n​/​g​l​o​b​a​l​-​t​a​x​-​e​v​a​s​i​o​n​-​r​e​p​o​r​t​-​2024/
3OECD, Tax Chal­lenges Ari­sing from the Digi­ta­li­sa­tion of the Eco­no­my – 2024, https://​www​.oecd​.org/​e​n​/​t​o​p​i​c​s​/​p​o​l​i​c​y​-​i​s​s​u​e​s​/​b​a​s​e​-​e​r​o​s​i​o​n​-​a​n​d​-​p​r​o​f​i​t​-​s​h​i​f​t​i​n​g​-​b​e​p​s​.html
4Mar­tin Col­let, La fis­ca­li­té de l’économie numé­rique : enjeu glo­bal, réponses locales ?, Revue Euro­péenne du Droit, 2021. ‑https://droit.cairn.info/revue-red-2021–1‑page-148
5The Irish Times, “Plans for EU digi­tal tax aban­do­ned until end of 2020”, March 2019. https://www.irishtimes.com/business/health-pharma/plans-for-eu-digital-tax-abandoned-until-end-of-2020–1.3823201
6Euro­pean Com­mis­sion, Com­mu­ni­ca­tion on Busi­ness Taxa­tion for the 21st Cen­tu­ry, May 2021.https://​ec​.euro​pa​.eu/​t​a​x​a​t​i​o​n​_​c​u​s​t​o​m​s​/​b​u​s​i​n​e​s​s​/​c​o​m​p​a​n​y​-​t​a​x​a​t​i​o​n​/​b​u​s​i​n​e​s​s​-​t​a​x​a​t​i​o​n​-​2​1​s​t​-​c​e​n​t​u​ry_en
7Cre­dits : Flo­rence Piot – stock​.adobe​.com
8EU Tax Obser­va­to­ry, Glo­bal Tax Eva­sion Report 2024.https://​www​.taxob​ser​va​to​ry​.eu/​g​l​o​b​a​l​-​t​a​x​-​e​v​a​s​i​o​n​-​r​e​p​o​r​t​-2024
9Ibid.
10Euro­pean Com­mis­sion, Com­mis­sion work pro­gramme on digi­tal levy post­po­ned, July 2021. https://​ec​.euro​pa​.eu/​c​o​m​m​i​s​s​i​o​n​/​p​r​e​s​s​c​o​r​n​e​r​/​d​e​t​a​i​l​/​e​n​/​I​P​_​2​1​_3311
11OECD, Tax Chal­lenges Ari­sing from the Digi­ta­li­sa­tion of the Eco­no­my – 2024 https://​www​.oecd​.org/​t​a​x​/​t​a​x​-​c​h​a​l​l​e​n​g​e​s​-​a​r​i​s​i​n​g​-​f​r​o​m​-​t​h​e​-​d​i​g​i​t​a​l​i​s​a​t​i​o​n​-​o​f​-​t​h​e​-​e​c​o​n​o​m​y​-​2​0​2​4​-​u​p​d​a​t​e.htm

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