Global Tax Conference 2026 l Navigating change with confidence

We are pleased to welcome you to Lisbon for the Forvis Mazars Global Tax Conference 2026, from 12 to 13 May.
The conference, featuring both tax technical plenary sessions and bespoke 1:1 / round-table meetings, will offer tax technical insights, the opportunity to interact with peers from other companies and the chance to meet our international tax experts from over 50 countries in a personalized setting.

Global Tax Conference Program

Day 1 - 12 May

15:00hUpon arrival, please proceed to the hotel reception desk to check in and collect your badge.
19:00h

Dinner at SUD Restaurant

Shuttle transportation provided (see below) | Dress code: smart casual / cocktail

Day 2 - 13 May

08:30h

08:40h

Welcome words (meeting room: Plenary)Jenny Stenesjö-Wöhrman | Head of Tax Forvis Mazars Sweden

08:40h

09:25h

Global Tax in Transition: From Regulatory Creep to Simplification and Fragmentation

(meeting room: Plenary)

A concise look at the shift in global tax from increasing regulatory complexity to a more fragmented and simplified landscape, and what it means for businesses navigating compliance and strategy.

Prof. João Félix Nogueira | External Speaker

09:30h 

10:30h

Regional Shifts: How Global Tax Rules Play Out on the Ground

(meeting room: Plenary)

Moderator:

Catherine Hall | Forvis Mazars Global Tax Committee member

 

Panelists:


José Jiménez​ | Forvis Mazars Group Tax Committee member - Performance 

Edwin Warmerdam​  | Europe & Head of Tax Forvis Mazars Romania

Jonathan Stuart-Smith​ | APAC & Head of Tax Forvis Mazars Thailand

Asma Charki​ | Africa / Middle East & Head of Tax Forvis Mazars Morocco

Michael Cornett​ | US & Managing Director at Forvis Mazars US Washington National Tax Office 

Eline Polak | Forvis Mazars Indirect Tax Community Leader

10:30h

11:00h

Coffee-break  

 

11:00h

12:00h

The Tax Leadership Perspective: From Theory to Practice

(meeting room: Plenary)

A panel of tax executives from various companies will share the real‑world tax and business challenges shaping their organizations today, creating an open dialogue with our Forvis Mazars tax teams on the issues that matter most.

Trey Ackerman | National Service Leader, Tax at Forvis Mazars US

Poppy Sandhu l Group Financial Controller at FootballCo

Gerard Bayona l Group Deputy Head of Tax at AXA

Rita Marques l Fiscal Affairs Director at Jeronimo Martins

José Luís Ferreira l CFO at Repsol Portugal

12:00h

13:30h

Lunch & closing words

Trey Ackerman | National Service Leader, Tax at Forvis Mazars US

Eric Klein Hesseling | Forvis Mazars Group Co-Head of Tax

Stefan Hölzemann | Forvis Mazars Group Co-Head of Tax

13:30h

14:05h

Deep-dive session: Tariffs (meeting room: Morus I)

Eline Polak | Forvis Mazars Indirect Tax Community Leader

Michael Cornett​ | US & Managing Director at Forvis Mazars US Washington National Tax Office 

Alfredo Hernández l Customs and International Trade Director at Forvis Mazars Mexico

 

14:10h

14:45h

Deep-dive session: Tax Transformation (meeting room: Morus I)

Catherine Hall | Forvis Mazars Global Tax Committee member

Chris Kavanaugh | Managing Director at Forvis Mazars US - Tax Transformation

14:50h

15:25h

Deep-dive session: Pillar 2 & Transfer Pricing (meeting room: Morus I)

Florian Mengele | Forvis Mazars Tax Partner Germany

Liviu Gheorghiu l Tax Partner Forvis Mazars Romania

Eric Flueckiger | Tax Partner at Forvis Mazars US - International Tax

Jon Morton | Principal & Practice Leader at Forvis Mazars US – ITS Transfer Pricing

15:30h

16:00h

     Coffee-break

17:00h

     Networking drinks 

External Speakers:

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Prof. João Felix Nogueira

João Félix Pinto Nogueira, PhD in Tax Law, is a Professor at the Portuguese Catholic University and a leading expert in European and international tax law, with senior roles at IBFD, academic journals, and regulatory bodies. He has over 20 years of teaching and research experience, extensive international academic and governmental consultancy involvement, and a prominent role in global tax policy forums. 

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Poppy Sandhu

Poppy Sandhu is Group Financial Controller at Footballco, where she leads global financial reporting, consolidation, and IFRS governance across the company’s international operations. A Chartered Accountant (ICAEW), she plays a key role in supporting Footballco’s growth and acquisition strategy, managing a sizeable, multi‑country finance function.

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Gerard Bayona

Gerard Bayona is Group Deputy Head of Tax (International Tax and Transformation) at AXA, where he leads global tax transformation initiatives and international tax matters across the group. Based in Madrid, he brings deep expertise in corporate and international taxation, having previously served as Head of Tax for AXA Spain and held senior tax roles at Zurich Insurance.

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Rita Marques 

Rita Marques is Head of Fiscal Affairs at Jerónimo Martins, where she oversees the group’s tax strategy, compliance, and fiscal governance across its international retail operations. Based in Lisbon, she plays a key role within the corporate finance function, supporting Jerónimo Martins’ multi‑country growth and regulatory alignment.

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José Luis Ferreira

José Luis Ferreira is Chief Financial Officer (CFO) of Repsol Portugal, responsible for finance, tax, and treasury across the country operation. A long‑tenured Repsol executive, he joined the group in 2006 and previously held senior tax leadership roles, bringing deep expertise from earlier positions at PwC and KPMG.

Additional information

Venue & Logistics

Hotel: 

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EPIC SANA Lisboa Hotel

Av. Eng. Duarte Pacheco 15

1070-100 Lisboa, Portugal

Restaurant for the dinner:

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SUD Lisboa

Avenida Brasília

Pavilhão Poente

1300-598 Lisboa, Portugal

Photography & Filming Notice

We kindly inform you that photographs and video recordings will be taken throughout the event. These materials may be used by the organisers for internal and external communication purposes.

If you would prefer not to be included in any video or photographic footage, please let the organising team know.

Practical information for attendees

General Guidance on getting around Lisbon

Lisbon is a walkable city, but its unique landscape is characterised by cobbled streets and hills. We therefore recommend wearing comfortable footwear to ensure a pleasant experience throughout your stay.

Walking is often the best way to explore central areas, while public transport is a convenient option for longer distances.

Lisbon typically enjoys sunny and warm weather, particularly during spring and summer. We recommend bringing sunglasses and staying hydrated throughout the day.

Dress Code

Business casual during conference sessions. Smart casual / cocktail attire for the networking dinner of the 12th.

Transportation

Please arrive at the lobby at 18:00h. Buses will start boarding at 18:15h. The dinner ends at 23:00h, with return buses departing as they fill up throughout the evening.