
Expat tax returns require specialist handling due to dual residency rules and international income sources. At Business At in Southampton, we provide tailored expatriate tax services to ensure accuracy and compliance with HMRC.
We are innovative chartered accountants focusing on automation to save you time. Available 7 days a week, 16 hours daily, we offer real-time support for expats managing UK tax obligations.
Experience


Expatriates often deal with dual tax residency, requiring coordination between UK and foreign tax authorities. We specialize in managing these complexities to optimize your tax position.
Using advanced tools and our international network, we ensure accurate reporting of overseas income, pensions, and investments. We guide you through tax treaties and compliance requirements seamlessly.
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.
Our comprehensive expat tax return package covers everything needed for compliance and tax efficiency:
Personal Self Assessment tax returns for UK expatriates and foreign nationals
Dual residency determinations and tax treaty applications
Reporting of overseas income, pensions, and capital gains
Advice on remittance basis and non-domiciled status
Proactive tax planning to minimize liabilities across jurisdictions
Experience

Experience
We specialize in expatriate tax with a large international network for cross-border support. Our automation-focused approach ensures efficient, accurate handling of your returns.
As chartered accountants and UKAN members, we offer government-backed support for international needs. Clients value our availability outside normal hours and real-time answers.
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 expat tax returns:
You'll need proof of income from all sources, residency certificates, details of overseas assets, and previous tax returns. We provide a checklist and assist with gathering documents efficiently.
Dual residency can lead to taxation in multiple countries, but tax treaties often prevent double taxation. We determine your residency status and apply relevant treaties to optimize your tax position.
UK Self Assessment deadlines apply, typically 31 January following the tax year. For expats, we manage additional considerations like overseas income reporting to ensure timely compliance.
Yes, we have international capabilities and assist expats worldwide with UK tax obligations, using our network to ensure compliance across jurisdictions.

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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