Our people are our greatest strength

Meet the people working at Regan van Rooy, a boutique international tax and structuring firm. Contact the team members below here.

Our team is specialised in each of our service offering areas, allowing us to work with your business to deliver rapid, pragmatic results in our respective fields. We focus on giving answers, not just opinions, based on your unique business situation and drivers – one size does not fit all. Read more about what Regan van Rooy does here. We leverage our deep experience across the African continent to deliver value and find solutions.

We work in international tax and structuring, tax advisory, transfer pricing, and also offer tax locum services.

Find out more about our people and what we do on LinkedIn.

International Tax

Caoilfhionn van der Walt

MA, MSc, CA (ICAEW), H Dip (International Tax)

Caoilfhionn has over 20 years of international tax experience in London and across Africa. She started her career in the international tax team at Arthur Andersen, London, and thereafter at Deloitte London. She moved to South Africa in 2006, where she was the head of international tax at the Sasol group for nine years, and a part-time lecturer in international tax at the University of Johannesburg. Caoilfhionn now heads up the Mauritian office of Regan van Rooy. She is a member of the tax technical committees of Mauritius Finance and of the South African Institute of Tax Practitioners.

Louise Vosloo


Louise is a qualified attorney with thirty years’ consulting experience, focusing on international tax. Prior to joining Regan van Rooy as an affiliate, Louise was a partner for over twenty years at Deloitte, South Africa, latterly as the country head of international tax. Louise has vast experience across all corporate and international tax matters, including financing arrangements, mergers and acquisitions, structuring, and dispute resolution.

Leon Newman

CA(SA), H Dip (Tax), H Dip (International Tax)

Leon is a qualified Chartered Accountant and holds a Higher Diploma in Tax Law and a Higher Diploma in International Tax. Leon has 26 years of experience in tax, including 14 years as a partner at Deloitte South Africa. His experience covers both corporate and international tax and Leon has particular expertise in transactional tax, including mergers and acquisitions, tax due diligence, corporate reorganisations and re-financings.

Vanessa Turnbull-Kemp

BCom (Tax)(Hons)., H Dip (Tax)

Vanessa is an international tax specialist with over 10 years of experience in international tax. Vanessa has an Honours degree in Tax along with an HDip in Tax law. Vanessa has spent the majority of her career with Big Four accounting firms along with time at National Treasury in their tax policy division and as part of a group tax team at a multinational corporation. Vanessa is passionate about tax, in particular, international tax and cross border tax issues.

Irma Lategan

B Com (Law), LLB, LLM (Tax)

Irma is an admitted attorney, notary and conveyancer and holds a Masters in Taxation. Based in Cape Town, she has almost twelve years of experience in corporate and international tax, mainly at Maitland (now Stonehage Fleming) and KPMG. Irma specialises in private client work with a focus on international structuring, offshore trusts, estate planning, tax residency, corporate tax, restructuring advice, as well as exchange control advice and applications.

Vanida Paupiah


Vanida is a qualified professional Accountant and holds a Masters in Business Administration. She has over 15 years experience in the financial services sector in Mauritius and has particular expertise in structuring multinational businesses. Vanida joined Regan van Rooy in 2022 and is based in the Mauritius office.

Owen Murphy

B Com, LLB, H Dip (Tax)

Owen holds a BComm, a LLB degree and a Higher Diploma in Taxation. Prior to joining Regan van Rooy as an affiliate, Owen worked at BDO Johannesburg as Africa Desk leader and Africa Tax specialist. He was previously the Vice President of Taxation at AngloGold Ashanti as well as the Group Tax Manager and Group Treasurer at the Altron Group and Divisional Tax Adviser at Anglo American. He has extensive experience in international tax, corporate tax and transfer pricing, mainly in the mining industry. During his career, he has also dealt with controversy management and negotiating with governments on stability agreements in many African jurisdictions.

Antonia Nicoloudakis

M-Com Taxation, B-Com Honours Taxation

Antonia is an experienced corporate and international tax professional with 12 years’ experience in tax consulting and in-house taxation. Antonia holds a Master’s degree in taxation from the University of the Witwatersrand and started her career in the international tax team at KPMG Johannesburg. She has gained extensive experience working on all facets of corporate and international tax, as well as transfer pricing.

Liané Bouwer

BCom Law , BCom Honours Taxation

As a recent BCom Honours Taxation graduate from the University of Pretoria, Liané is currently an international tax consultant at Regan van Rooy. She majored in tax and accounting during her undergraduate BCom Law degree from the University of Pretoria. Liané is determined to expand her knowledge within the international tax sphere.

Laura McCarrick

BComm, FCA

Laura is a Fellow of the Irish Institute of Chartered Accountants, having qualified with KPMG Dublin where she provided tax advisory services to a range of Irish and international clients. Laura has an Honours Bachelor Degree in Commerce (Accounting) from the National University of Ireland, Galway.

Transfer Pricing

Cabrini McCarrick

BSc Hons, Solicitor (Law Society Of Ireland), CA (ICAEW)

Cabrini has over 15 years of transfer pricing and tax experience in London and across Africa. Cabrini qualified as a lawyer and then began her tax career in the transfer pricing team at Deloitte, London, and thereafter at Deloitte, South Africa. She has worked for major international companies, on all aspects of transfer pricing including design, documentation and dispute resolution. Cabrini now heads up the Regan van Rooy Transfer Pricing team.

Geoff Morris

B.Bus (Eco), MBA

Geoff has over 20 years of transfer pricing controversy experience with the Australian Tax Office and various Big Four accounting firms, and 10 years as a Competent Authority. Geoff has successfully negotiated Advance Pricing Agreements and Mutual Agreement Procedures with countries across Asia Pacific, Europe, and North America and has resolved complex transfer pricing disputes across a wide range of industries. Geoff has deep experience across the full life cycle of transfer pricing controversy management, transfer pricing risk management and also brings the unique insight of the inner workings of tax authorities.

Steven Castillo

Bach. Economics, MBA

Steven is an Economist with extensive international experience as a Transfer Pricing Associate Director, having worked as a transfer pricing advisor in various Big 4 European practices. Notably, Steven has worked in the following countries: Spain, France, Belgium, Luxembourg and Ireland. In Europe he has been consulted by large investment funds, banks and financial institutions on how to price complex intercompany financial services transactions. Steven has also advised multinational companies on the arm’s length nature of their transfer pricing policies as well as about their transfer pricing documentation obligations.

Tuli Nkonki

CA (SA), BCom, Post Graduate Diploma in Accounting

Tuli is a qualified Chartered Accountant. Her career started in the External Auditing division at PwC South Africa. Tuli has 5 years of tax experience including consulting at PwC Johannesburg as a Transfer Pricing Manager, and as a Tax Specialist in the Group Tax division at Aspen Pharmacare in Johannesburg. Her Transfer Pricing experience includes providing advice to multinational clients in various industries (both in-house and consulting) on matters such as preparation of group-wide transfer pricing documentation; preparation of country-by-country reports; controversy support and the arm’s length nature of their intragroup transactions.

Candela Rampello

Bach Economics, Masters in Finance

Candela is a certified economist and holds a Master degree in Finance. She has extensive experience in transfer pricing analysis with orientation on financial transactions for multinational companies. Before joining Regan van Rooy, Candela has worked for major international companies and started her career at PwC Argentina, specializing in complex intercompany financial services transactions. Candela is currently specialising as a Manager in Transfer Pricing at Regan van Rooy.

Thembelihle Nkosi

BCom Accounting (Hons) Taxation

Thembelihle has a BCom Accounting Degree and a BCom Honours in Taxation both attained from the University of Johannesburg. Thembelihle started off her career at KPMG South Africa, as a Trainee Tax Consultant, specialising in the high net worth individuals and expatriate compliance taxes. She then moved on to PwC South Africa, where she started specialising in Transfer Pricing. She has gained extensive experience working on multinational clients in various industries. Her experience includes preparing the three-tier Transfer Pricing documentation.

Deborah Alberts

BCom Acc, HDip Tax

Deborah is an experienced tax professional currently focussing on Transfer Pricing. She has a BCom in Accounting as well as a Higher Diploma inTax. Deborah started her career at Deloitte Johannesburg before joining Regan van Rooy Transfer Pricing in 2021. She previously specialised in global employer services, high net worth individuals and tax advisory work.

Employee Taxes

Indirect Tax


Cinzia De Risi

BCom (Law) (cum laude), BCom Hons (Economics), Master (Tax)

Cinzia has over 20 years of experience in employees' tax and global mobility. She started her career at PwC Johannesburg before moving to EY Johannesburg, where she became a partner in 2015, leading the Human Capital tax division for the African practice. She is passionate about advising multinational companies and their mobile employees to optimise their mobility programmes and people tax matters.
Over the years she has combined her deep technical knowledge in international personal tax with her firm belief in practical client centric solutions to provide comprehensive multi-jurisdictional solutions.

Di Hurworth

BA LLB, LLM, H Dip Tax

Di is an admitted attorney, with over 25 years of tax experience. After completing her legal articles with Francis Thompson and Aspden in Cape Town, Di joined the KPMG tax department in 1991, and was admitted as a partner in 2001. During her eighteen years as partner, Di headed up the VAT division in Cape Town. She has extensive experience in VAT and has advised both local and international clients on the VAT implications of cross border as well as domestic transactions, across a spectrum of industries, including oil and gas, shipping, mining, retail and financial services. She also has Namibian direct and indirect tax experience.

Wian de Bruyn

Registered Master Customs Practitioner (SAIT), BCom, Hons, MCom. Certificate in International Freight Management and Administration for Importers and Exporters

Wian is a customs and international trade specialist and a registered Master Customs Practitioner. He started his career at the South African Department of Trade, Industry and Competition, specifically at the International Trade Administration Commission of South Africa. He then joined EY Johannesburg where he founded the Customs and Excise services line. After EY, Wian spent 13 years in the Deloitte Customs and Global Trade team in Johannesburg as an Associate Director. Wian specialises in customs tariff investigations, applications for reduction, increase of the customs duty, rebate provisions and the creation of new tariff subheadings. He consults on customs registrations, customs valuations, tariff classifications, transfer price adjustments and conducts supply chain analysis to identify import/export compliance issues and customs duty savings opportunities.

Funds & Agri

Brienne van der Walt

B Compt (Hons) CA(SA)

Brienne is a seasoned banker and financier with deep African experience. Brienne started his career with Accenture in London before moving to the banking industry where he built technology infrastructure for two large Swiss investment banks. He moved to South Africa in 2006, initially delivering advisory services to the public sector before joining ABSA in 2009. He spent several years heading up the ABSA / Barclays pan-African agricultural business unit, before being appointed to head up the ABSA Business Banking division in 2015. In 2019 he joined GroFin - a development finance organisation headquartered in Mauritius - first as Chief Investment Officer and a year later as CEO. He joined Regan van Rooy in 2022 to build an Africa-focused impact and development business unit.

Independent Technical Review

Professor Deborah Tickle

CA(SA), Master Tax Practitioner; Adj. Ass. Professor Tax Masters University of Cape Town, Davis Tax Committee Member

Barry Ger

Attorney of High Court of South Africa; B. Business Science (UCT); LLB (UCT), B. Com (Honours) (Taxation) (UCT); Advanced Diploma in International Taxation (Chartered Institute of Taxation – United Kingdom)

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