US tax & consulting

HQ Chicago, Illinois, 10 Offices Worldwide
Tax Consulting and Compliance, HR, Accounting, Audit
All Sectors
Across US

Areas of Expertise

IMS offer any business seeking accounting, audit, and tax compliance the right-sized advice on landing and expanding in the US. With strong links to UK and the EU, they understand the needs of scale-ups and can directly assist in mitigating risk and maximising opportunities in the US.

Working with GTM Global

IMS have been GTM’s US accounting partner of choice since 2018. They have helped over 600 UK and EU scale-ups grow their presence in the United States through establishing greenfield operations or by acquisition. They serve their clients from their US offices in Chicago, Detroit, New York, Tucson and Richmond, and their Europe offices in London, Bordeaux and Brussels.

Principal Services

Tax Planning

International, domestic Federal & State tax planning & Transfer pricing

Tax Compliance

Income & Sales Tax preparation

Accounting & Book-keeping, Payroll & Reporting

Consolidation, conversion & out-sourcing

Management Consulting

Start-up, Strategic, Business Planning & Financial Budgeting

Transaction Services

Audit, Due Diligence & Acquisition

Key Advisors

Antoine Guillaud


Is an ‘Expert Comptable’ with more than 25 years of experience assisting foreign companies to establish themselves in the US market.

Sonia Kanjee

Senior Manager, UK Practice

Is a CPA with ten years of experience in US taxation, specializing in cross border transactions for European corporations with US inbound investments and operations.

Hugues Retif

Director of Operations

Has assisted UK/EU companies in setting up their businesses in the United States for more than 15 years.

Ben Troch

Senior Manager

Has over five years of experience working with international clients, especially in the field of income taxation and international mobility.

Book Free Consultation

Join the GTM Ecosystem & get access to invaluable advice & guidance

Upcoming Events


28sep3:00 pm4:30 pmNorth American eCommerce & Business Expansion WebinarGet first-hand advice on how to deliver more eCommerce & Smart Retail sales in North America in this free webinar with in-country experts.3:00 pm - 4:30 pm

29sep9:00 am1:00 pmSouth-East Asia Digital & Tech Expansion WorkshopFree virtual expansion workshops for ambitious UK digital and tech companies looking to land and expand in South-East Asia.9:00 am - 1:00 pm

29sep3:00 pm6:30 pmNorth American Operations & Supply Chain Expansion WorkshopFind out how to land and expand your operations in North America in 2021/22 in this free virtual workshop.3:00 pm - 6:30 pm

Useful Resources

Vancouver, British Columbia, Canada

The city of Vancouver is a dynamic city with a mixed vibe – outdoor, North American culture. The city has positioned itself, not only to integrate with northwestern British Columbia but also with the Pacific Coast economic region (Vancouver to San Diego).

Like to Access the GTM Ecosystem?

Does your company supply products or services that add tangible value to tech/digital scale-ups in international expansion mode? Contact us to find out how you can become a collaborator, partner or sponsor within the GTM Ecosystem.