Self-assessment Tax Return Services in the UK
Completing your self-assessment tax return can be time-consuming and stressful, especially with the complexity of UK tax rules. At Jermyn & Co, we simplify the process by preparing and filing your tax return accurately and on time, ensuring compliance with HMRC while optimising your tax position.
Whether you’re self-employed, a landlord, or an individual with additional income, our expert team is here to take the hassle out of self-assessment.
Why Jermyn & Co?
Why Choose Jermyn & Co for Self-Assessment Tax Returns?
At Jermyn & Co, we understand the challenges of navigating self-assessment requirements. Our services are designed to help you:
- Avoid Penalties – Ensure your return is filed on time to avoid fines and interest charges.
- Maximise Tax Efficiency – Identify and claim all allowable expenses, deductions, and reliefs.
- Save Time and Stress – Let us handle the details while you focus on what matters most.
- Stay Compliant – Ensure your tax return meets HMRC’s latest regulations.
Our personalised approach ensures your tax return is tailored to your circumstances, giving you peace of mind.
Tax Prepartion
Expense Identification and Deductions
Tax Planning Advice
HMRC Enquiry Support


Jermyn & Co
Who Needs to File a Self-Assessment Tax Return?
You may need to file a self-assessment tax return if you:
- Are self-employed or a sole trader.
- Earn over £1,000 from additional income (e.g., side jobs, freelance work).
- Have rental income as a landlord.
- Receive dividends or interest over your personal allowance.
- Earn over £100,000 annually.
- Have income from overseas or complex financial arrangements.
We’ll ensure your return is accurate and submitted on time, no matter how simple or complex your tax situation.
Jermyn & Co
What our clients say about their experience with us
Jermyn & Co
Frequently Asked Questions about Business Tax
The deadline for online submissions is 31 January following the end of the tax year. Paper returns must be submitted by 31 October. We’ll help you stay ahead of deadlines.
Expenses you can claim include business costs, travel, office supplies, and professional fees. We’ll review your records to ensure you claim everything you’re entitled to.
Missing the deadline can result in penalties starting at £100, plus interest on unpaid tax. Our proactive support ensures you avoid these costly errors.
Absolutely. We specialise in managing returns for individuals with multiple income sources, including self-employment, rental income, and investments.
Our Accountancy Services
We offer a range of services to help you manage your finances and grow your business.

Why Jermyn & Co?
Why Choose Jermyn & Co for Your Accounts?
At Jermyn & Co, we’re more than just accountants – we’re your partners in success. Our accountancy services are designed to help you:
- Stay Compliant – Ensure your financial records meet HMRC and Companies House requirements.
- Save Time – Let us handle the numbers while you focus on growing your business.
- Improve Efficiency – Streamline processes and reduce errors with expert support.
- Plan for Growth – Use actionable insights to guide your financial decisions and achieve your goals.
With our proactive approach, you’ll gain the confidence and clarity you need to succeed.

Why Jermyn & Co?
Why Choose Jermyn & Co for Business Tax?
Tax legislation in the UK can be complex and ever-changing, but with Jermyn & Co by your side, you’ll have access to expert advice and practical solutions.
Our services include:
- Strategic Tax Planning – Helping your business plan effectively to reduce your overall tax liabilities.
- Corporation Tax Filing – Ensuring accurate and timely submissions to HMRC.
- VAT Compliance – Assisting with VAT registrations, returns, and managing thresholds.
- R&D Tax Credits – Maximising available credits for your innovation and development projects.
- Self-Assessment Support – Tailored assistance for self-employed individuals or partnerships.
With our expertise, you can focus on running your business while we handle the numbers. We’re committed to helping you stay ahead of deadlines and legislation changes.
Corporation Tax Compliance
VAT Services
R&D Tax Credits
Tax Planning and Advisory

Why Jermyn & Co?
Why Choose Jermyn & Co for Personal Tax?
At Jermyn & Co, we understand that everyone’s financial situation is unique. Our personal tax services are designed to help you:
- Optimise Tax Efficiency – Leverage allowances, reliefs, and deductions to minimise your tax liability.
- Ensure Compliance – Stay on top of filing deadlines and HMRC requirements to avoid penalties.
- Plan for the Future – Align your tax strategy with your long-term financial goals.
- Simplify Tax Complexity – Let us handle the details so you can focus on what matters most.
From simple tax returns to complex financial arrangements, we provide expert advice and support tailored to your needs.
Proactive Tax Planning
Expert Guidance
Tailored Solutions
Stress-Free Compliance

Why Jermyn & Co?
Why Choose Jermyn & Co for Corporate Finance?
At Jermyn & Co, we understand that every business is unique. Our experienced team offers a personalised approach to corporate finance, helping you:
- Secure Financing – Access the funding you need for expansion, acquisitions, or working capital.
- Plan for Growth – Develop tailored financial strategies to achieve your business objectives.
- Manage Mergers & Acquisitions – Navigate complex transactions with confidence, from valuations to negotiations.
- Optimise Financial Performance – Streamline processes, reduce costs, and maximise profitability.
Whether you’re a start-up seeking investment or an established business exploring new opportunities, we’ll provide the expert guidance you need to succeed.
Business Valuations
Mergers & Acquisitions (M&A)
Fundraising & Investment
Financial Modelling
& Forecasting

Why Jermyn & Co?
Why Choose Jermyn & Co for HR Services?
At Jermyn & Co, we understand that every business is unique, and so are its HR needs. Our tailored HR services help you:
- Stay Compliant – Meet the latest UK employment laws and regulations with ease.
- Save Time and Resources – Let us handle the admin while you focus on growing your business.
- Engage Your Team – Build a positive, productive workplace with our employee engagement solutions.
- Grow with Confidence – Ensure your HR strategy aligns with your long-term business objectives.
Whether you need ongoing HR support or help with a specific issue, our experienced team is here to assist.
Payroll Management
HR Compliance
Employee Engagement & Retention
Training & Development

Why Jermyn & Co?
We offer tailored accounting services to various sectors through Norfolk & Suffolk.

Jermyn & Co
How We Help You Succeed
At Jermyn & Co, we don’t just complete your tax return – we provide strategic advice to optimise your finances. By understanding your unique circumstances, we ensure you claim all available reliefs and stay fully compliant with HMRC regulations.
With our expert support, you can rest assured that your tax affairs are in safe hands.
Ready to Simplify Your Self-Assessment?
Talk To Us
Book a consultation to discuss your self-assessment needs.
Prepare and Review
We’ll gather the necessary details and prepare your tax return.
Submit with Confidence
File your return accurately and on time, with our expert guidance.