
CIS Tax Returns Portsmouth are essential for contractors and subcontractors in the construction industry to stay compliant with HMRC. We specialize in handling your CIS tax returns efficiently, ensuring you claim all allowable expenses and receive any refunds due.
As certified chartered accountants, we offer proactive tax advice and support available 7 days a week. With our expertise in automation and compliance, we make your tax returns straightforward and stress-free.
Experience


Navigating CIS regulations can be complex, with strict deadlines and paperwork requirements. We ensure your tax returns are accurate and submitted on time to avoid penalties.
Our team stays updated with HMRC changes and handles all aspects, from verifying subcontractor status to processing deductions and claims. We focus on making compliance simple for you.
Experience
Our comprehensive CIS tax return service covers everything you need for compliance and tax efficiency in Portsmouth:
Preparation and submission of CIS tax returns to HMRC
Verification of subcontractor status and deduction calculations
Claiming allowable expenses specific to the construction industry
Handling CIS refunds and ensuring timely payments
Ongoing support and advice for CIS-related queries
Experience

Experience

Unlike general accountants, we have specific expertise in CIS tax returns for the construction industry. We understand the nuances of deductions, expenses, and compliance requirements unique to contractors in Portsmouth.
Available 7 days a week with real-time answers, we provide fixed fees and proactive advice. Our clients benefit from our international network and automation-focused approach to save time and money.
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 CIS tax returns in Portsmouth:
The Construction Industry Scheme (CIS) requires contractors to deduct tax from payments to subcontractors. Subcontractors must file tax returns to report income and claim deductions. We help both parties comply with HMRC regulations in Portsmouth.
Our CIS tax return services start from a fixed monthly fee, tailored to your needs. We offer transparent pricing with no hidden charges, ensuring value for money and peace of mind.
Yes, with our international network, we can assist contractors working in the UK from abroad. We navigate cross-border tax implications and ensure compliance with local and UK regulations.
We aim for fast turnaround times, often within days, thanks to our automation tools and efficient processes. We are available outside normal hours for urgent queries to keep things moving smoothly.

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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