
IR35 Assessment Portsmouth ensures your contracting arrangements comply with HMRC rules, protecting you from tax liabilities. We provide clear, actionable assessments for contractors and businesses in Portsmouth, focusing on accuracy and compliance.
As certified chartered accountants with international expertise, we offer out-of-hours support and practical advice. Our automation-focused approach delivers efficient assessments tailored to your needs, available seven days a week.
Experience


IR35 assessments review your contracts and working practices to determine tax status. We provide detailed reports clarifying inside or outside IR35, helping you avoid unexpected tax bills.
Our team stays updated with HMRC guidelines and uses automated tools for accuracy. We explain implications simply, so you make informed decisions about your contracting work in Portsmouth.
Experience
Our IR35 assessment service covers all key aspects to ensure compliance and give you peace of mind:
Detailed contract review against HMRC's IR35 criteria
Analysis of working practices and control factors
Written assessment report with clear status determination
Advice on mitigating risks if inside IR35
Ongoing support for contract renewals or changes
Experience

Experience

We combine traditional accountancy expertise with innovative automation to deliver fast, accurate IR35 assessments. We focus on the unique needs of contractors in Portsmouth, offering tailored advice.
As UKAN members with international capabilities, we provide reliable assessments supported by our 7-day-a-week availability. Our partnership approach ensures long-term compliance and success for your business.
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 IR35 assessments in Portsmouth:
IR35 is UK tax legislation determining if contractors should be taxed as employees. An assessment ensures compliance, avoiding penalties. In Portsmouth, with many contracting roles, it's crucial for tax efficiency.
We offer competitive pricing, often included in contractor packages. Contact us for a free quote tailored to your specific needs and contract volume in Portsmouth.
Yes, we advise on restructuring contracts or working practices to move outside IR35, or assist with compliance for inside IR35, including payroll and tax calculations.
Typically within a few days, depending on complexity. Our automated processes and out-of-hours availability ensure fast, efficient assessments when needed.

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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