2 days/week at home

Core hours 11–3

Dog friendly

Apply now

Job Description

Job Description:

To support the UK Tax Manager and Senior Tax Accountant ensure UK group and Irish entities maintain high quality tax compliance and reporting. This will include preparation of statutory tax reporting, HMRC tax returns and associated tax workings for the UK & Ireland group entities. In addition support the Tax Manager and Senior Tax Accountant with various projects and providing tax advice to the business.

What are we looking for?

  • Strong relevant experience in tax reporting and/or preparation of corporation tax returns within a Top 10 Accounting Practice or In-House Tax Team.
  • ACA / ACCA / CTA part qualified.
  • The job holder will need strong interpersonal and communication skills, both written & oral.
  • The job holder will need the ability to prioritise and manage large volumes of work to meet deadlines.
  • The job holder will need strong UK corporate tax technical knowledge .
  • Experience of using ONESOURCE Corporation Tax software is desirable, but not essential.
  • Experience of assisting with preparation of UK transfer pricing documentation requirements is desirable, but not essential.
  • Experience of dealing with service centres is desirable, but not essential.

What will be your key responsibilities?

  • Provision of financial information and tax computations, together with supporting tax workings to the Tax Manager and Senior Tax Accountant for review.
  • Preparation and review of internal and external corporation tax reporting and tax returns.
  • Support Tax Manager and Senior Tax Accountant with in-sourcing of tax returns from external tax advisors into UK tax centre.
  • Support Tax Manager and Senior Tax Accountant integrate new business acquisitions into UK tax centre.
  • Support UK Financial Accountant in preparation of financial statements for the UK Legal entities reporting under UK GAAP from business units US GAAP financial records.
  • Support Tax Manager and Senior Tax Accountant with tax project work such as CFC, Hybrids and DPT analysis.
  • Support Tax Manager and Senior Tax Accountant advise business units on tax implications of projects.
  • Support Senior Tax Accountant to coordinate financial data required from business unit and service centre.

What can you expect from Mars?

  • Work with over 130,000 diverse and talented Associates, all guided by the Five Principles.
  • Join a purpose driven company, where we’re striving to build the world we want tomorrow, today.
  • Best-in-class learning and development support from day one, including access to our in-house Mars University.
  • An industry competitive salary and benefits package, including company bonus.

Mars is an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability status, protected veteran status, or any other characteristic protected by law. If you need assistance or an accommodation during the application process because of a disability, it is available upon request. The company is pleased to provide such assistance, and no applicant will be penalized as a result of such a request.

Company benefits

Open to part-time employees
Open to job sharing
Open to compressed hours
Enhanced maternity leave – 26 weeks at 90% pay
Enhanced paternity leave – 26 weeks at 90% pay
24 days annual leave + bank holidays
“Pawternity” leave
Pregnancy loss leave
Bank holiday swaps
Employees are very happy with their working location freedom
Employees are very happy with the flexibility in the hours they work
Employees are very happy with the benefits their company offers
Work-life balance
Employees feel that they can switch off quite easily from work
Role modelling
Employees feel that flexible working is part of the culture
Employees feel they have complete autonomy over getting their work done

Additional employee ratings
(these do not contribute to the FlexScore®)

Employees feel that the diversity is good and there are continued efforts to improve it
Employees feel that the culture supports equity and inclusivity well
Employees feel like it is a really great environment to work in
Employees feel very excited about and aligned with the company mission
Employees feel that their salary is good and matches the value they bring

Working at Mars UK

Company employees

4,000 In the UK

Gender diversity (male:female)


Office locations

London, Slough, Waltham, Castle Cary, Birstall, Plymouth

Hiring Countries




United Kingdom

United States

Awards & Achievements

1st – Large companies

1st – Large companies

Flexa100 2024
Consumer Goods

Consumer Goods

Industry awards 2023
3rd – Large companies

3rd – Large companies

Flexa100 2023
Retail & Ecommerce

Retail & Ecommerce

Industry awards 2022

Other jobs you might like