OMB/Mixed Tax Manager

Mixed Tax Manager

Location: City of London

Workplace: Hybrid

Salary: £67,000 – £72,000

A respected and growing UK advisory and accountancy group is seeking an experienced Mixed Tax Manager to join its Tax team. This is a high-impact role working closely with senior leaders to deliver bespoke tax advice to owner-managed and family-owned businesses, collaborating with in-house specialists across general practice, private client, legal and financial planning.

You’ll gain exposure to a broad range of advisory projects spanning the full business lifecycle, take on meaningful client responsibility, and play a key part in mentoring junior colleagues — all within a supportive, forward-thinking environment.

About the firm

This organisation is a leading national multi-disciplinary advisory, tax and audit group, backed by an international network. It combines deep technical expertise with a people-first culture and a strong focus on practical, commercially minded advice.

The group is known for:

• A collaborative, inclusive environment with modern flexibility


• Strong growth across corporate and private client tax services


• High-quality, multi-disciplinary delivery for entrepreneurial clients


• Ongoing investment in learning, progression and leadership development

You will manage the delivery of tailored tax advice, balancing review of junior team members’ work with hands-on preparation of bespoke reports for senior sign-off. You’ll work directly with clients and support senior leaders on pitches, building a visible profile across the team and market.

Key responsibilities include:

• Managing and delivering multi-tax advisory projects for OMBs and family businesses


• Working closely with Partners/Directors; reviewing junior work and providing coaching


• Supporting business development, proposals and client onboarding (remote and in-person)


• Advising on:


• Corporate reorganisations (e.g., share-for-share exchanges, buybacks, demergers) and relevant reliefs


• Multi-tax considerations across CT, IT, CGT, IHT, VAT and SDLT


• Employee share incentives (EMI, growth shares) including valuation support


• EIS/SEIS qualifying conditions and advance assurance submissions


• Tax valuations and HMRC clearance letters


• Preparing clear, client-friendly written reports applying technical analysis to client facts


• Supporting compliance as needed: reviewing OMB corporation tax returns and assisting audit/general practice teams with technical queries and computations

You’re a commercially aware tax professional who enjoys variety, client contact and mentoring others — with strong written communication and a solutions-led mindset.

We’re looking for someone with:

• CTA qualification preferred; ACA/ACCA and/or ATT advantageous


• Extensive post-qualification experience advising owner-managed businesses


• Strong working knowledge across CT, IT, CGT, IHT, VAT and SDLT


• Advanced Excel and Word skills; excellent written and verbal communication


• Experience mentoring and developing junior colleagues


• Organised, motivated and able to manage competing deadlines and budgets


• Ability to generate creative technical ideas and BD contributions


• Strong relationship-building skills and the credibility to win client trust

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