Certax Accounting (Surbiton)

Andrea Okos MAAT, MBA, CPA (USA, inactive)

Helping business owners understand their numbers and make better financial decisions.

Andrea is a highly experienced finance professional with a strong background in accounting, tax and commercial finance across both large multinational organisations and fast-growing businesses. She initially qualified as a Certified Public Accountant (CPA) in the United States during her time with KPMG (Big 4). As she is now practising in the UK, her CPA status is maintained on an inactive basis, while continuing to reflect a strong foundation in US accounting standards and professional practice.

Andrea has also worked with globally recognised organisations including Chevron (a major oil company), as well as supporting start-ups and SMEs through key stages of growth.

Alongside her technical expertise in accounting and tax compliance, Andrea brings a strong commercial focus to her work. She has extensive experience supporting senior stakeholders with clear, insightful financial analysis to inform strategic planning and improve business performance.

Andrea now works closely with SMEs, entrepreneurs and individuals, combining technical knowledge with practical, forward-looking advice. Her approach goes beyond compliance, helping clients understand the key drivers of their financial performance, strengthen decision-making, and build sustainable, profitable businesses.

Clients value Andrea’s ability to translate complex financial information into clear, practical insights that support better decision-making and long-term success.

Compliance

• Bookkeeping
• Payroll and CIS
• VAT (Value Added Tax)
• Accounts for sole traders and partnerships
• Personal income tax and corporation tax
• Company formation and company secretarial services

Systems & Efficiency

• Computerised accounting systems setup and support
• Training in bookkeeping and accounting software (including Excel)

Advisory & Insight

• Management accounts
• Budgeting and forecasting