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Tax & Treasury Manager

Job in Greater London, London, Greater London, W1B, England, UK
Listing for: Mondi plc
Full Time position
Listed on 2026-02-19
Job specializations:
  • Finance & Banking
    Financial Compliance, Corporate Finance
Salary/Wage Range or Industry Benchmark: 100000 - 125000 GBP Yearly GBP 100000.00 125000.00 YEAR
Job Description & How to Apply Below
Location: Greater London

The Tax & Treasury Manager is responsible for the end-to-end tax and treasury operations across all U.S. legal entities, including Paper Bags, CFlex, and Release Liner businesses. This role owns the accuracy, compliance, and execution of U.S. tax, cash, and banking activities, ensuring disciplined governance, timely reporting, and strong alignment with Group standards.

Reporting directly to the Vice President, Finance, the Tax & Treasury Manager serves as the primary owner of U.S. tax compliance and treasury operations, with hands‑on responsibility for execution and control. The role partners closely with Group Tax (London), external advisors (KPMG), site finance teams, AP, and senior leadership to ensure tax, cash, and statutory obligations are met efficiently, accurately, and in full compliance.

This position requires a high degree of technical rigor, operational discipline, and cross‑functional coordination, along with strong executive‑level communication.

This role is central to ensuring tax compliance, cash discipline, and regulatory integrity across a complex U.S. manufacturing footprint. It offers meaningful exposure to senior leadership, Group Finance, and external partners, with clear ownership at the core of the organization’s financial and statutory foundation.

Your Mission:
Tax Compliance & Reporting
  • Own all U.S. federal, state, and local tax compliance across Paper Bags, CFlex, and Release Liner entities
  • Coordinate preparation and filing of U.S. federal returns (including Form 1120 and BEAT) in partnership with KPMG
  • Manage preparation and submission of Forms 1042, 1099, W-8 and related withholding tax reporting
  • Ensure timely and accurate tax payments, filings, extensions, and related tracking
  • Maintain comprehensive tax calendars, documentation, and audit‑ready work papers
  • Track tax positions, exposures, and risks; proactively surface issues and mitigation plans to leadership
  • Own Sales and Use Tax compliance for all U.S. Paper Bag manufacturing sites
  • Ensure correct tax determination, filings, and remittances across jurisdictions
  • Coordinate audits and inquiries related to indirect taxes and implement corrective actions where needed
Treasury & Cash Management
  • Own daily and weekly banking and cash management processes across all U.S. Paper Bag sites
  • Execute treasury transfers and oversee liquidity positioning in line with Group treasury guidelines
  • Manage bank relationships, account structures, signatories, and banking documentation
  • Partner with Group Treasury on cash forecasting, funding, and capital deployment activities
Intercompany Netting
  • Own the intercompany netting process for U.S. entities (Bags and U.S. Holdings), ensuring accurate, timely, and compliant settlement of balances
  • Coordinate with Group and regional counterparts to resolve discrepancies and maintain clean intercompany positions
  • Own tax‑related master data processes, including W‑8s, W‑9s, and new vendor tax validations
  • Oversee AP cleanup and maintenance related to tax, withholding, and statutory compliance
  • Ensure vendor records support proper tax treatment, reporting, and audit readiness
Regulatory & Entity Management
  • Manage U.S. state registrations, filings, and entity maintenance requirements
  • Ensure legal entities remain compliant with tax, treasury, and regulatory obligations
  • Coordinate responses to tax notices, inquiries, and audits at federal, state, and local levels
Audit & External Coordination
  • Serve as primary tax and treasury interface for external auditors and tax authorities
  • Coordinate tax‑related audit requests, documentation, and issue resolution
  • Maintain strong working relationship with KPMG for state and federal tax filings
  • Partner closely with Group Tax in London to ensure alignment with Group policy, reporting, and planning initiatives
Governance, Controls & Process Excellence
  • Establish and maintain strong internal controls over tax and treasury processes
  • Drive standardization, documentation, and continuous improvement across tax and treasury operations
  • Ensure full alignment with Group policies, internal control frameworks, and compliance expectations
Your Profile:
  • Bachelor’s degree in Accounting, Finance, or related field
  • Active CPA…
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