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As local and international tax regulations become more prescriptive, dealing with them in a cross-border context presents you with a significant challenge. The number and complexity of tax investigations conducted by authorities is rapidly escalating and the need for tax adjustments is rising accordingly. Our 400 tax lawyers are supported by strong technical tax intelligence teams that identify developments in tax law and policy affecting your business. This multi-disciplinary approach helps you develop robust structures that maximise tax effectiveness in alignment with your commercial strategy.

Whether you are a financial institution, multinational, fund, investor or high net worth individual, we understand your business and the tax pressures you face. Our teams work together across Europe and beyond in the key areas affecting your business including VAT, international taxation, transfer pricing, e-commerce, M&A and investment funds, tax planning and financing. Our experts can help you manage tax control cases and deal with tax authorities as well as manage tax litigation cases. The right tax advice can make a material difference to transaction costs and, in some cases, avert serious consequences.

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March 2020
CMS Tax Glob­al Bro­chure
At the start of the 2020s, the roles of cor­por­ate tax plan­ning and reg­u­la­tion are un­der in­creas­ing scru­tiny as ques­tions of eth­ics and cor­por­ate cit­izen­ship con­tin­ue to rise up the com­mer­cial and trade policy agenda.Tax be­ha­viour is now a ma­jor fea­ture of cor­por­ate repu­ta­tion, with in­stant com­mu­nic­a­tion put­ting in­tense pres­sure on in­ter­na­tion­al com­pan­ies to pub­lish in­form­a­tion on how they meet their tax ob­lig­a­tions and man­age tax risks. The EU’s man­dat­ory re­port­ing re­quire­ments for cross-bor­der tax ar­range­ments (the DAC6 re­gime) carry heavy sanc­tions for non-com­pli­ance. With DAC6 be­com­ing fully ap­plic­able across the EU on 1 Ju­ly 2020, dis­clos­ure is a key is­sue for in­ter­me­di­ar­ies, tax­pay­ers and na­tion­al tax au­thor­it­ies.Fisc­al trans­par­ency and fair­ness are key con­cepts not just for en­ter­prises and in­di­vidu­als, but for the gov­ern­ments and fin­an­cial in­sti­tu­tions who com­pete to pro­mote and at­tract in­ter­na­tion­al trade and in­vest­ment. The G20/ OECD pro­ject to tackle base erosion and profit shift­ing (BEPS) has brought to­geth­er over 135 coun­tries in a col­lab­or­at­ive ef­fort to com­bat tax avoid­ance.Di­git­al­isa­tion is a key fo­cus of the BEPS pro­ject. As the glob­al di­git­al eco­nomy con­tin­ues to pro­duce new products, ser­vices and com­mer­cial prac­tices in every sec­tor, it raises a host of new ques­tions for in­ter­na­tion­al tax policies and struc­tures. On­line mar­kets and their tax im­plic­a­tions for do­mest­ic and cross-bor­der trans­ac­tions are hav­ing game-chan­ging ef­fects on how and where busi­ness is done.Many tax au­thor­it­ies are ramp­ing up their en­force­ment ac­tions, armed with stiffer pen­al­ties and a more tar­geted ap­proach to in­vest­ig­a­tions. The net res­ult? Tax­pay­ers of dif­fer­ent kinds – mul­tina­tion­als, fin­an­cial in­sti­tu­tions, funds, in­vestors and high net worth in­di­vidu­als – are fa­cing in­creased tax risks and pres­sures. The right ad­vice can make all the dif­fer­ence. Ex­perts can help you shape your strategy, man­age the risks and make the most of the op­por­tun­it­ies in the tax land­scape of the 2020s.
March 2019
Tax­a­tion of the di­git­al eco­nomy
This pub­lic­a­tion aims to identi­fy vari­ous as­pects of the di­git­al eco­nomy and to con­sider wheth­er in­come taxes are the most ef­fect­ive and ef­fi­cient way to tax this eco­nomy. Do we need a re­volu­tion in the tax sys­tem?
December 2019
Eth­ics: the fu­ture of tax plan­ning
Mor­al­ity and eth­ics now dom­in­ate the in­ter­na­tion­al tax plan­ning land­scape, rais­ing ma­jor ques­tions for com­pan­ies, le­gis­lat­ors and ad­visers. Even in spe­cif­ic cases, the is­sues are rarely black and white.In this guide we aim to shed some light on the grey areas and set the de­bate in con­text. While we can­not claim to have defin­it­ive an­swers to the com­plex ques­tions in­volved or to cov­er the myri­ad vari­ations in­volved, we do of­fer some prac­tic­al point­ers for best prac­tice.

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12 May 2020
Tax Con­nect Flash
The European Com­mis­sion pub­lished on 8 May 2020 a pro­pos­al for a dir­ect­ive aim­ing at de­fer­ring for three months the dis­clos­ure of in­form­a­tion re­lated to cer­tain cross-bor­der ar­range­ments be­cause of the COV­ID-19 out­break.  It would modi­fy the Dir­ect­ive 201
25 March 2020
CMS Ex­pert Guide to COV­ID-19 Tax Re­lief Meas­ures
29 April 2020
Busi­nesses turn to elec­tron­ic / di­git­al sig­na­tures as re­mote work­ing be­comes...
This art­icle is pro­duced by CMS Hol­born Asia, a Form­al Law Al­li­ance between CMS Singa­pore and Hol­born Law LLC. As work­place clos­ures and so­cial dis­tan­cing have rendered phys­ic­al sign­ing of doc­u­ments lo­gist­ic­ally...
7 April 2020
Tax Con­nect Flash
23 March 2020 Emer­gency Act No. 2020-290 de­clared COV­ID-19 state of health emer­gency ap­plic­able over the next 2 months fol­low­ing en­force­ment (i.e. 24 March), sub­ject to ex­ten­sion or early ter­min­a­tion. Art­icle 11 au­thor­ises the Gov­ern­ment to le­gis­late by m
30 April 2019
CMS Ex­pert Guide to Post BEPS In­tel­lec­tu­al Prop­erty Tax­a­tion
Com­par­is­on between the dif­fer­ent IP boxes
19 March 2020
Coronavir­us and taxes
On 18 March 2020, the Pol­ish Gov­ern­ment an­nounced the so-called “anti-crisis shield”. It aims at help­ing Pol­ish busi­nesses strug­gling with the ef­fects of the COV­ID-19 epi­dem­ic. Among many oth­er things,...
19 March 2020
Tax Con­nect Flash
The French Tax Au­thor­it­ies (FTA) have spe­cified the ex­cep­tion­al tax meas­ures im­ple­men­ted in fa­vor of all busi­nesses to off­set the eco­nom­ic im­pact of the Cov­id-19 out­break.
27 July 2018
CMS Ex­pert Guide to In­ter­na­tion­al Trans­fer Pri­cing Doc­u­ment­a­tion
This guide provides con­sist­ent and prac­tic­al in­form­a­tion of the doc­u­ment­a­tion re­ques­ted by each loc­al tax au­thor­ity – es­pe­cially where the pro­vi­sions of na­tion­al laws are far from be­ing har­mon­ised.
19 March 2020
Hun­gary: Eco­nom­ic meas­ures passed to tackle the fall out of the coronavir­us...
On 18 March 2020, Hun­gari­an Prime Min­is­ter Vikt­or Or­bán an­nounced the im­ple­ment­a­tion of an eco­nom­ic pack­age con­tain­ing meas­ures to mit­ig­ate the ad­verse im­pact of the coronavir­us out­break on the na­tion's...
18 March 2020
#1ex­pert1minute – CMS ex­perts on the im­pact of Cov­id-19
Video series
19 April 2017
CMS Ex­pert Guide to Trans­fer Pri­cing Doc­u­ment­a­tion Re­quire­ments in 30 Coun­tries
This CMS Ex­pert Guide is an ex­cel­lent sup­port for in­ter­na­tion­al groups to man­age and se­cure their trans­fer pri­cing policy in an en­vir­on­ment where the pro­vi­sions of na­tion­al laws are far from be­ing har­mon­ised.
19 March 2020
Rus­sia strengthens meas­ures to con­tain the spread of COV­ID-19
Rus­sia con­tin­ues to im­ple­ment meas­ures to re­duce the spread of COV­ID-19 at fed­er­al and re­gion­al level, which in­cludes: ex­tend­ing the re­gime of self-isol­a­tion; clos­ing all schools;...