
Self-assessment tax returns need to be filed correctly and on time to stay compliant with HMRC. At Business At in Southampton, we specialize in preparing accurate self-assessment returns for sole traders, landlords, and self-employed individuals, ensuring you meet deadlines and optimize your tax position.
We use automated processes to streamline your tax return, provide real-time answers available 7 days a week, 16 hours daily, and offer proactive advice. Our certified chartered accountants focus on maximizing your deductions and minimizing stress.
Experience


Filing your self-assessment on time avoids late penalties and ensures you pay the correct tax. We handle all calculations and submissions to HMRC, giving you peace of mind.
Our automated systems check for errors and identify common deductions, potentially saving you money. We're available outside normal hours to answer urgent questions, especially as deadlines approach.
Experience
Let us take care of the hard work — so you can enjoy the rewards of a successful career.
We assist you in planning for a successful , fulfilling and prosperous future.
We ensure you claim all eligible expenses and allowances to reduce your tax bill. Here's what we review for self-assessment clients:
Home office expenses for sole traders and self-employed individuals
Vehicle and travel costs related to your business activities
Professional subscriptions, training, and software expenses
Business use of home calculations and utility apportionments
Capital allowances on equipment and assets for tax relief
Experience

Experience
Unlike traditional accountants, we use automation to make tax returns faster and more accurate, saving you time and reducing errors. Our focus on innovation ensures efficient processing.
As certified chartered accountants and UKAN members, we have the expertise to handle complex cases, including international income. Our clients in Southampton appreciate our out-of-hours availability and growth-partner approach.
Experience
Experience

“Sash has been extremely knowledgeable and reliable from when I first met him regarding helping me with my accounts as a director of a limited company for the first time. He has provided me with sound advice and helped me to understand the ins and outs of timely and successful accounting and made it easy."
Adam Garnett
We build growth-focused partnerships with every client, offering hands-on guidance through business transitions and tax complexities. Your dedicated accountant provides proactive advice when you need it most.
Clients value our availability and expertise, telling us they finally understand their numbers and feel confident expanding globally. That's the impact of innovative, responsive accountancy.
Let's Connect
Call us at +44 7795 226823 or email [email protected] anytime. We're available outside normal hours for real-time assistance. Use our contact form for quick follow-ups, and we'll reply promptly.
Start with a free, no-obligation consultation to explore your options. We'll discuss your business needs, share insights on automation or tax savings, and outline how we can partner for growth. It's easy and straightforward to take the first step.
Common questions about self-assessment tax returns with Business At in Southampton:
Our self-assessment services start with a free consultation to assess your needs. We offer competitive, fixed-fee packages based on complexity, including sole trader returns and additional services like international income handling.
You'll need income records like invoices, bank statements, expense receipts, and details of any other income sources. We guide you through the process and use cloud tools to securely collect and organize documents efficiently.
Yes, as part of our international tax services, we handle overseas income reporting, ensure compliance with tax treaties, and optimize your tax position across jurisdictions, leveraging our global network.
Missing deadlines can result in penalties. We offer proactive reminders and urgent support to file late returns, minimize fines, and get you back on track with HMRC requirements quickly.

Business Accounting and Tax Ltd provides automation-focused accounting, tax, and international services for small to medium businesses in Southampton and beyond. Contact us for a free consultation to grow your business.
73 Holly Hill, Southampton, SO16 7ES, Hampshire, United Kingdom
+447795226823
Business Accounting & Tax Ltd is a Limited Company with Registered Company Number 07894977
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