M&A Tax Manager

Company:  ONE HIRING UK&I
Location: London
Closing Date: 06/07/2026
Salary: £65,000 per annum
Hours: Full Time
Type: Permanent

Job Description

Job title: M&A/Transaction Tax Manager

Location: London

Salary: Base c.£65,000 - ££80,000 + Bonus

Contact: [email protected]


One Hiring are working in partnership with one of London’s few B-Corp mid-tier LLPs and they're currently growing its M&A/Transactions Tax team and it’s one of the more interesting mid-market growth stories I’ve come across recently.


This isn’t a traditional “steady-state” TS team the firm is actively building out its Transactions Tax capability alongside a Corporate Finance function headed by an ex-big 4 that’s grown 3x the last few years. Alongside this the practice itself has seen 24% firmwide growth!


At the same time, the quality and complexity of work is evolving quickly. Historically, deals sat more in the £10m-£30m range, but they’re now regularly advising on transactions in the £50m-£100m space, with increasing exposure to Private Equity backed work, international investors, founder-led businesses and lower mid-market corporates.


They’re already working with (not limited to):

  • Large UK mid-market private equity house (£20m-£200m+ investment capability)
  • Founder led and privately owned B2B businesses (typically SME to lower mid-market scale)
  • Lower mid-market investment fund focused on scaling founder led businesses (£5m-£50m deal range typically)


What you’ll have exposure across:

  • Buy-side & sell-side M&A
  • Tax due diligence
  • Structuring
  • Cross-border transactions
  • Reorganisations & demergers
  • Wider PE and advisory-led work


Do you have a preference for more M&A, transactions, advisory or compliance? Then in this role you’re able to shape it to what you like. You'll also be able to get involved in non-chargeable areas!


Culture:

The culture also feels very different from a typical mid-market setup. The environment is collaborative, entrepreneurial and non-hierarchical, with no individual Partner offices and a real emphasis on accessibility and interaction across the team.


The Partners are very open that they want ambitious individuals who enjoy being hands on technically, taking ownership and helping shape how the team evolves rather than simply sitting behind process. They have described it as ”having the feel of an entrepreneurial, collaborative build”.


Requirements:

  • Must have M&A/Transactions experience/exposure
  • ACA/ACCA/CTA qualified


Benefits (not limited to):

  • Most people work from home on Friday’s, you generally won’t be in the office past 6:30pm
  • Summer Friday afternoons off
  • Hybrid working
  • 25 days annual leave + bank holidays
  • Your birthday off
  • Various social events and team gatherings
  • Car scheme


For someone looking for stronger deal exposure, genuine progression and more influence internally without sacrificing deal quality, it’s a very strong opportunity. I also have opportunities within this team at NQ Assistant Manager and Senior Manager grades.


How to apply?

Please click apply or email me via [email protected]

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