Mixed Tax Manager/Senior Manager

Ambition; Greater London; Hybrid; GBP 65,000 - 95,000; Full time

Benefits offered by this job

Hybrid work

Flexible hours

Job summary

Ambition is seeking a Tax Manager or Senior Tax Manager to join its growing Accountancy & Advisory team in the UK. The role combines expert tax advisory with client-facing work for entrepreneurs, startups and owner-managed businesses, delivering guidance on corporation tax, VAT and personal tax within a broader advisory service.

You will lead tax projects, review computations, identify planning opportunities, mentor juniors, and help shape how tax services are delivered in a fast-growth

Qualifications

• ACA/ACCA/ATT/CTA or equivalent professional qualification.
• Experience advising SMEs, startups and owner-managed businesses.
• Strong technical tax knowledge with a commercial focus.

Responsibilities

• Act as tax lead for SME and startup clients, advising on CT, VAT and personal tax.
• Review and oversee tax computations and returns for accuracy and compliance.
• Identify and deliver tax planning opportunities and structuring.
• Serve as principal contact for client tax queries and provide practical advice.
• Mentor junior team members and support development within the team.
• Collaborate with the wider accountancy team to integrate tax into services.

Skills

ACA/ACCA/ATT/CTA

Mixed tax experience

SME/startup experience

Technical/commercial mindset

Leadership

Tax software (Xero/Sage/QB)

Education

Tax professional qualifications (ACA/ACCA/ATT/CTA)

Tools

Xero

Sage

QuickBooks

Job description

Tax Manager / Senior Tax Manager | SME & Business Advisory

A growing, technology-enabled professional services business is seeking a Tax Manager / Senior Tax Manager to join its expanding Accountancy & Advisory team. The successful candidate will support a broad portfolio of entrepreneurs, startups, and owner-managed businesses, providing expert tax guidance alongside wider business advisory support.

This is an excellent opportunity for an experienced tax professional who enjoys combining technical expertise with a commercially focused, client-facing role, working closely with ambitious businesses at various stages of growth.

The Role

This individual will act as a trusted adviser to clients across a range of tax matters while collaborating with colleagues to deliver a seamless accountancy service. The position offers significant exposure to advisory work, client relationship management, and the opportunity to influence how tax services are delivered within a growing business.

Key Responsibilities

• Act as the tax lead for a portfolio of SME and startup clients, advising on corporation tax, VAT, and personal tax matters.
• Review and oversee the preparation of tax computations and returns, ensuring accuracy and compliance with current legislation.
• Identify and deliver tax planning opportunities, including business structuring, reliefs, allowances, and tax-efficient strategies.
• Serve as the principal point of contact for client tax queries and provide practical, commercially focused advice.
• Support business owners with wider financial and operational queries where required, particularly in relation to early-stage and scaling businesses.
• Advise new clients on appropriate structures and tax considerations during onboarding.
• Monitor developments in UK tax legislation and communicate relevant changes to clients and internal stakeholders.
• Work closely with the wider accountancy team to ensure tax considerations are integrated into ongoing client service delivery.
• Contribute to the development of internal technical resources, guidance notes, and best-practice processes.
• Mentor and support junior team members where appropriate.

Candidate Profile

The ideal candidate will possess:

• ACA, ACCA, ATT or CTA qualification, or equivalent.
• Strong mixed tax experience spanning personal tax, corporation tax and VAT.
• Experience advising SMEs, startups, and owner-managed businesses within practice, advisory, or outsourced finance environments.
• Excellent technical knowledge combined with a commercially minded approach.
• The ability to translate complex tax concepts into clear, practical advice for business owners and non-finance professionals.
• Strong relationship management and stakeholder engagement skills.
• Experience using accounting and tax software such as Xero, Sage, QuickBooks, or similar platforms.
• A proactive and solutions-driven mindset with the ability to work independently and manage competing priorities.
• Leadership capabilities, including experience reviewing work and supporting the development of junior colleagues.

What's on Offer

• Competitive salary and benefits package.
• Hybrid and flexible working arrangements.
• Clear progression opportunities within a high-growth organisation.
• Exposure to a diverse portfolio of entrepreneurial and owner-managed businesses.
• Ongoing professional development and technical training.
• A collaborative, forward-thinking culture with genuine opportunities to influence and shape service delivery.
• A varied role combining compliance, advisory, and strategic client engagement.

This opportunity would suit an experienced Tax Manager or Senior Tax Manager seeking a broad mixed-tax position with significant client exposure and the chance to play a key role within a growing and ambitious business.