Practical corporate tax advice for confident decisions.

Comprehensive tax planning, compliance and advisory services that help businesses meet obligations, manage risk and optimise their tax position. Supporting sustainable growth with clear, commercially focused tax guidance.

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Delivering clarity, compliance and commercial insight.

Our corporate tax specialists work closely with businesses of all sizes to ensure compliance while identifying tax efficiencies and supporting strategic decisions. We provide proactive, year-round advice tailored to your organisation’s structure, goals and risk profile.

Our support typically includes:

Corporation Tax compliance and planning
Tax-efficient structuring for SMEs and groups
Capital allowances claims
International tax considerations
Tax due diligence for transactions
HMRC enquiries, disclosures and negotiations
Share schemes
Creative tax reliefs
SEIS & EIS
Mergers and acquisitions
Reorganisations & reconstructions
Exit planning

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Turning tax complexity into strategic opportunity.

Corporate tax legislation evolves rapidly. With the right support, you can remain compliant, manage liabilities and make informed decisions that support long-term growth and value creation.

Trusted by over 2,000 businesses nationwide.

Supporting organisations at every stage.

We advise startups, expanding SMEs, large corporates and international groups — tailoring our approach to your size, sector and ambitions.

Explore all sectors

Personal service, backed by national strength.

Working as an extension of your team, we provide clear, commercially relevant advice supported by the broader expertise of Sumer Group – one of the UK’s Top 15 accountancy practices.

What you can expect:

Proactive tax planning

Clear communication and practical recommendations

Collaboration with audit and advisory teams

Access to specialist tax expertise

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Expert support for acquisitions, disposals and fundraising.

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Practical VAT solutions for UK and international operations.

Trusted by businesses nationwide.

Stephen Rayment, Group Managing Director
Systech Group

“Simmons Gainsford have acted for Systech Group Ltd providing and co-ordinating UK and international tax planning advice since circa 2010/11. They have proven themselves to be professional and reliable advisers and support our global business by co-ordinating local tax advice. They have supported Systech in working successfully with PrimeGlobal member firms, originally in Asia Pacific and more recently in the UAE. The international arrangements have worked well and Anthony and the team are very proficient at managing those relationships."

Colin Banyard, Founding Shareholder
Cracknore Investment Limited

“With my focus mainly on projects, Simmons Gainsford are extremely helpful in making sure that our deals are structured properly, ensuring no potential issues downstream. Gary’s tax knowledge is fantastic and David’s understanding of what actually happens on the ground is brilliant. They really do complement each other very well and provide a first-rate service. They always make themselves available and will happily jump into meetings, often at very short notice. I really do value their support.”

Linda Yi, Financial Controller
BenQ UK Limited

"Simmons Gainsford have been our trusted advisors since our incorporation in 1997, and their support has been integral to our success. They handle every aspect of our financial and compliance needs, including accounts preparation, audit, corporation tax compliance, payroll, and VAT. Their comprehensive approach gives us peace of mind, knowing that every detail is managed with precision and care. In the past, they’ve also expertly guided us through HMRC’s complex periodic audit, ensuring we navigated any challenges smoothly. The team’s dedication and in-depth knowledge make Simmons Gainsford an essential part of our business operations. We couldn’t recommend them more highly.”

Talk to our corporate tax specialists.