Yasmin Okonkwo — Corporate Tax Senior, ACCA CTA
Birmingham
Corporate tax specialist with eight years in practice and in-house, covering compliance and the relief claims that sit on top of it. Recovered £412,000 across three R&D claims, one defended through an HMRC enquiry without reduction.
Experience
Corporate Tax Senior, Tredwell Marsh LLP · February 2023 – present
Corporate tax compliance and advisory for 46 owner-managed companies across the Midlands.
- Manages the full compliance cycle for 46 companies and filed every CT600 of the 2025 cycle on time, with no late-filing penalties across the portfolio.
- Recovered £412,000 across three R&D claims in advanced manufacturing, including one defended to closure through an HMRC enquiry without reduction.
- Reorganised a nine-company group onto a consolidated payment arrangement, cutting quarterly instalment interest by £27,000 a year.
- Wrote the firm briefing on full expensing and trained 14 staff on applying it to capital allowances claims.
Interim Tax Accountant (nine-month contract), Winterbourne Housing Group · April 2022 – December 2022
- Delivered the first in-house corporation tax computation for a 4,200-home housing group, ending a £38,000 annual outsourcing fee.
- Agreed a revised partial exemption special method with HMRC, recovering £96,000 of input tax the previous method had blocked.
- Documented the Senior Accounting Officer controls for tax, which the group auditors signed off without qualification.
Tax Semi-Senior, Quarrie & Fenn LLP · September 2018 – March 2022
- Prepared roughly 180 corporation tax computations a year across retail, hospitality and property clients.
- Identified £310,000 of capital allowances on a hotel refurbishment the client had treated wholly as repairs.
- Passed all thirteen ACCA examinations while carrying a full compliance caseload.
Education
- BA Accounting and Finance · University of Leeds · September 2015 – June 2018
Skills
- Corporate tax: CT600 compliance, R&D tax relief, Capital allowances, Group relief, Quarterly instalment payments, Loss planning
- Wider tax: VAT partial exemption, HMRC enquiries, Senior Accounting Officer, Employment taxes, Charity taxation
- Systems: Alphatax, CCH, Xero, Sage 50, Excel, Power Query
Certifications
- Chartered Tax Adviser (CTA) — Chartered Institute of Taxation
- Chartered Certified Accountant (ACCA) — ACCA
