As local and international tax rules become more prescriptive, and compliance and reporting obligations more onerous, dealing with them effectively is a significant challenge. Our UK-based tax team is well-placed to assist you. We are part of a 300 strong tax group across Europe and beyond. Supported by strong technical back-up teams that identify developments in tax law and policy affecting your business, we will help you develop robust structures that maximise tax effectiveness and can respond to future developments such as BEPS. We work with you to implement an appropriate tax strategy for your business.

Whether you are a financial institution, multinational, fund, corporate investor or high net worth individual, we understand your commercial drivers and the tax pressures you face.

Our teams work together across all sectors and all areas of tax affecting your business including VAT, transfer pricing, tax structuring and tax disputes. Where you are undertaking a transaction, our advice can make a material difference to transaction costs, help you exploit tax saving opportunities and, in some cases, avert serious consequences. If you are involved in a dispute, an early intervention with the tax authorities on your behalf can ensure the best outcome for your business.

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Em­ploy­ee In­cent­ives
CMS has the largest number of partners dedicated to employee share plans in a City law firm, with over forty years’ combined experience as partn
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Private Cli­ent Tax
The CMS Private Client Tax practice advises on all aspects of personal and corporate tax matters including income tax, capital gains tax, inheritance
Re­struc­tur­ings and Re­or­gan­isa­tions
The CMS tax team provides UK and multinational groups with bespoke structuring services to achieve commercial aims tax efficiently.  Whether you
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Tax Dis­putes and In­vest­ig­a­tions
The global tax landscape has undergone radical change in recent years.  In the face of growing pressure to crack down on perceived tax avoidance
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Trans­fer Pri­cing
As an organisation with global operations, you may be benefiting from strong growth in cross-border transactions. You are also subject to tighter regu
Law-Now: Tax
Vis­it Law-Now for leg­al know-how and com­ment­ary
Ad­vising the Board


CMS is the No.1 law firm for RE­ITs.  The CMS RE­ITs team in­cludes spe­cial­ists in the fol­low­ing ex­pert­ise areas:Real Es­tate­Cor­por­ate Fin­an­ceTaxReg­u­lat­ory­Bank­ing Changes in UK tax law and in­vestor pref­er­ence...
CMS ad­vises Pa­cific Life Re on c.£1.6bn longev­ity swap with trust­ee of...
In­ter­na­tion­al law firm CMS has ad­vised Pa­cific Life Re In­ter­na­tion­al Lim­ited (UK branch) (PL Re) on a c.£1.6bn dis­in­ter­me­di­ated longev­ity swap with the trust­ee of the York­shire and Cly­des­dale Bank Pen­sion...
CMS ad­vises Red­burn and Roth­schild & Co on the mer­ger of Red­burn and At­lantic...
In­ter­na­tion­al law firm CMS is ad­vising Red­burn (Europe) and Roth­schild & Co on the mer­ger of the op­er­a­tions of Red­burn (Europe) and At­lantic Equit­ies, un­der the own­er­ship of Roth­schild & Co.  The com­bin­a­tion...
CMS UK Tax Dis­putes Di­gest (March 2023)
Wel­come to the March 2023 edi­tion of our UK Tax Dis­putes Di­gest: a high-level sum­mary of key de­vel­op­ments in con­ten­tious tax over the last few months for heads of tax, fin­ance dir­ect­ors, gen­er­al coun­sel...
Changes to au­dio-visu­al tax re­liefs in the UK
Fol­low­ing a peri­od of con­sulta­tion in which much of the in­dustry has been act­ively en­gaged, the Chan­cel­lor of the Ex­chequer an­nounced in this week’s Spring Budget the pack­age of re­forms that will ap­ply...
Spring Budget 2023 – key tax policy an­nounce­ments
Today’s Spring Budget speech fo­cused on mov­ing the UK eco­nomy in­to growth mode. With the in­crease in the main rate of cor­por­a­tion tax to 25% on the ho­ri­zon and fast-ap­proach­ing, the Chan­cel­lor turned...
Why tax should be part of your ESG strategy
With a grow­ing pub­lic per­cep­tion of tax avoid­ance as a mor­al is­sue, tax dis­putes have the po­ten­tial to cause sig­ni­fic­ant repu­ta­tion­al harm. At the same time, tax is also ex­pec­ted to be a key tool in help­ing...
Why tax should be part of your ESG strategy
With a grow­ing pub­lic per­cep­tion of tax avoid­ance as a mor­al is­sue, tax dis­putes have the po­ten­tial to cause sig­ni­fic­ant repu­ta­tion­al harm.  At the same time, tax is also ex­pec­ted to be a key tool in help­ing to drive sus­tain­able be­ha­viours and the trans­ition to net zero.  In light of re­cent glob­al tax ini­ti­at­ives and with tax­pay­ers fa­cing un­pre­ced­en­ted levels of scru­tiny, it has nev­er been more im­port­ant for all busi­nesses in the life sci­ence and health­care sec­tor to make tax a fun­da­ment­al part of their broad­er ESG strategy.
CMS ad­vises Nat­W­est Group on ac­quis­i­tion of ma­jor­ity share­hold­ing in Cus­hon
In­ter­na­tion­al law firm CMS has ad­vised Nat­W­est Group on its ac­quis­i­tion of a ma­jor­ity share­hold­ing in Cus­hon, a work­place sav­ings and pen­sions fintech. Cus­hon cur­rently serves 500,000 mem­bers and has...
HM­RC up­date guid­ance on wheth­er off­shore unit trusts are re­quired to re­gister...
HM­RC have up­dated their Trust Re­gis­tra­tion Ser­vice (“TRS”) manu­al to state that un­au­thor­ised unit trusts (such as JUTs and GUTs) will need to con­sider wheth­er they are re­quired to re­gister trust de­tails...
HM­RC re­verse po­s­i­tion on col­lect­ing cus­tom­er IP data from fin­an­cial in­sti­tu­tions
On 26 Janu­ary 2023, the first re­port on HM­RC’s use of fin­an­cial in­sti­tu­tion no­tices (“FINs”) was laid be­fore Par­lia­ment. The re­port in­cludes a num­ber of im­port­ant up­dates, in­clud­ing an un­ex­pec­ted...
Healthy Ho­ri­zons
The Life Sci­ences & Health­care sec­tor is un­der in­creased scru­tiny from an ESG-per­spect­ive, with pres­sure faced by every as­pect of the value chain.  The at­ten­tion on each of the three pil­lars of ESG provides an op­por­tun­ity for busi­nesses to demon­strate ESG ex­cel­lence, cre­ate busi­ness value through fair and re­spons­ible work­ing prac­tices, and be a lever for growth as well as so­ci­et­al good.Our prac­tic­al guide on re­spons­ible busi­ness with­in the Life Sci­ences & Health­care sec­tor is ac­cess­ible on this page.  Our Healthy Ho­ri­zons con­tent will be made avail­able as it is pub­lished, ex­plor­ing top­ics ran­ging from gov­ernance, sus­tain­able fin­ance & re­spons­ible in­vest­ment in the sec­tor to re­spons­ible ap­proaches to mar­ket­ing, risk & repu­ta­tion.  If there is a top­ic you’d like to dis­cuss fur­ther, please do get in touch.  We ad­vise our Life Sci­ences & Health­care cli­ents – from mul­tina­tion­als to start ups – in all areas of ESG-re­lated law and would be de­lighted to speak.